Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.3.05
B. Geng, Deli Peng
Osteomeles schwerinae, an endemic plant with ecological restoration functions from the hot/warm-dry river valleys of the Hengduan Mountains and adjacent regions, has low seed germination in cultivation. This study attempted to improve seed germination by testing the effect of several treatments including dry after-ripening (DAR), GA3, light and temperature treatments for seeds from three populations. DAR increased germination at 25/15°C but not at 15/5°C, as compared with fresh seeds. DAR was sufficient to break dormancy; GA3 could not significantly increase germination percentage, indicating that seeds of O. schwerinae appear to have non-deep physiological dormancy. After the dormancy is broken, temperature significantly affects germination. Seeds germinated significantly better at higher temperatures (20-25°C) than at lower (< 15°C) and extreme high temperatures (> 30°C). A base temperature for germination (Tb) of 4.9-9.3°C and a thermal time requirement for 50% germination (θ50) ranging from 158.7 to 217.4°Cd were identified for non-dormant DAR seeds, depending on the population. This study provides a theoretical basis for dormancy-break and germination of O. schwerinae seeds.
{"title":"Seed dormancy and germination characteristics of Osteomeles schwerinae, a riparian plant endemic to the Hengduan Mountains and adjacent regions","authors":"B. Geng, Deli Peng","doi":"10.15258/sst.2022.50.3.05","DOIUrl":"https://doi.org/10.15258/sst.2022.50.3.05","url":null,"abstract":"Osteomeles schwerinae, an endemic plant with ecological restoration functions from the hot/warm-dry river valleys of the Hengduan Mountains and adjacent regions, has low seed germination in cultivation. This study attempted to improve seed germination by testing the effect of several treatments including dry after-ripening (DAR), GA3, light and temperature treatments for seeds from three populations. DAR increased germination at 25/15°C but not at 15/5°C, as compared with fresh seeds. DAR was sufficient to break dormancy; GA3 could not significantly increase germination percentage, indicating that seeds of O. schwerinae appear to have non-deep physiological dormancy. After the dormancy is broken, temperature significantly affects germination. Seeds germinated significantly better at higher temperatures (20-25°C) than at lower (< 15°C) and extreme high temperatures (> 30°C). A base temperature for germination (Tb) of 4.9-9.3°C and a thermal time requirement for 50% germination (θ50) ranging from 158.7 to 217.4°Cd were identified for non-dormant DAR seeds, depending on the population. This study provides a theoretical basis for dormancy-break and germination of O. schwerinae seeds.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"105 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.3.06
Venuste Munyaneza, Deming Li, Pan Jia, Xiaowen Hu
The development of seed vigour testing methods is important for high seed quality selection and, consequently, ensuring high seedling emergence and uniform establishment in the field, particularly in harsh environments. In this study, standard germination (SG), germination under water and temperature stress conditions, radicle emergence (RE) count, accelerated ageing (AA), and electrical conductivity (EC) tests were applied to evaluate the vigour of Poa crymophila and Elymus dahuricus seed lots. SG ranged from 70 to 88% for P. crymophila and 81 to 97% for E. dahuricus, with no significant correlation with field emergence (FE) for either species. EC was significantly correlated (r = -0.774, P < 0.05) with FE for P. crymophila seeds, but not for E. dahuricus. RE counts at 144 and 108 hours from sowing for P. crymophila and E. dahuricus, respectively, were significantly correlated with FE. Germination after one day of AA for P. crymophila and four days for E. dahuricus were more closely correlated with FE than other AA periods. Germination at -0.2 MPa and 15°C for P. crymophila, 0.0 MPa and 20°C for E. dahuricus also related to field emergence.
{"title":"Various vigour test methods to rank seed lot quality and predict field emergence in two forage grasses","authors":"Venuste Munyaneza, Deming Li, Pan Jia, Xiaowen Hu","doi":"10.15258/sst.2022.50.3.06","DOIUrl":"https://doi.org/10.15258/sst.2022.50.3.06","url":null,"abstract":"The development of seed vigour testing methods is important for high seed quality selection and, consequently, ensuring high seedling emergence and uniform establishment in the field, particularly in harsh environments. In this study, standard germination (SG), germination under water and temperature stress conditions, radicle emergence (RE) count, accelerated ageing (AA), and electrical conductivity (EC) tests were applied to evaluate the vigour of Poa crymophila and Elymus dahuricus seed lots. SG ranged from 70 to 88% for P. crymophila and 81 to 97% for E. dahuricus, with no significant correlation with field emergence (FE) for either species. EC was significantly correlated (r = -0.774, P < 0.05) with FE for P. crymophila seeds, but not for E. dahuricus. RE counts at 144 and 108 hours from sowing for P. crymophila and E. dahuricus, respectively, were significantly correlated with FE. Germination after one day of AA for P. crymophila and four days for E. dahuricus were more closely correlated with FE than other AA periods. Germination at -0.2 MPa and 15°C for P. crymophila, 0.0 MPa and 20°C for E. dahuricus also related to field emergence.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.3.08
B. Touchette, Daniel S. Cox
Seed enhancements involve post-harvest modifications of seeds intended to improve germination and plant performance. This includes seed modifications that facilitates the delivery of other plant-benefiting components (e.g., nutrients or plant protectants). This study examined the use of tomato-seed encapsulation as a possible extension of seed coatings. Placing seeds within gelatin capsules offers potential benefits including space for greater volumes of additives, separation between protectant chemicals and seeds, minimised human exposure to agrochemicals, and improved uniformity for mechanical planters. The objectives of this study were to determine if seed encapsulation alters seedling emergence, plant performance and serves as a delivery-system for controlled-release fertilizers. The results demonstrate that seed encapsulation delayed initial plant emergence by one day, and between one and two days for encapsulation with fertilizer treatments. Gelatin capsules alone in comparison with the control improved early root development, promoted plant growth and increased fruit production, indicative of gelatin’s biostimulant properties. The addition of controlled-release fertilizers (especially Florikan, 18:6:8) provided greater aboveground, belowground and total plant mass. The results of this study support the concept that seed encapsulation can improve tomato performance, and that other component(s) can be successfully delivered to provide additional plant benefits.
{"title":"Gelatin capsules as a delivery system for tomato (Lycopersicon esculentum) seed enhancements","authors":"B. Touchette, Daniel S. Cox","doi":"10.15258/sst.2022.50.3.08","DOIUrl":"https://doi.org/10.15258/sst.2022.50.3.08","url":null,"abstract":"Seed enhancements involve post-harvest modifications of seeds intended to improve germination and plant performance. This includes seed modifications that facilitates the delivery of other plant-benefiting components (e.g., nutrients or plant protectants). This study examined the use of tomato-seed encapsulation as a possible extension of seed coatings. Placing seeds within gelatin capsules offers potential benefits including space for greater volumes of additives, separation between protectant chemicals and seeds, minimised human exposure to agrochemicals, and improved uniformity for mechanical planters. The objectives of this study were to determine if seed encapsulation alters seedling emergence, plant performance and serves as a delivery-system for controlled-release fertilizers. The results demonstrate that seed encapsulation delayed initial plant emergence by one day, and between one and two days for encapsulation with fertilizer treatments. Gelatin capsules alone in comparison with the control improved early root development, promoted plant growth and increased fruit production, indicative of gelatin’s biostimulant properties. The addition of controlled-release fertilizers (especially Florikan, 18:6:8) provided greater aboveground, belowground and total plant mass. The results of this study support the concept that seed encapsulation can improve tomato performance, and that other component(s) can be successfully delivered to provide additional plant benefits.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.1.10
Worakamol Thongmak, Khomsan Ruangwong, A. Wongkaew, Siwapon Srisonphan, D. Onwimol
The application of atmospheric non-thermal plasmas and nanomaterials for seed technology is relatively new compared to their use in industrial and agricultural sectors. This study aimed to investigate the potential of plasma-activated water (PAW) priming, silver-nanopriming and green silver-nanopriming for seed performance enhancement in maize. The experiment was carried out using two lots of maize seeds with a one-year difference in age. Seed treatment procedures were priming with PAW formular 1 (PAW1), with silver nanoparticles (AgNPs) using PAW formular 1 (PAW1SNP), with green-AgNPs using PAW formular 1 (PAW1GSNP), with PAW formular 2 (PAW2), with AgNPs using PAW formular 2 (PAW2SNP), with green-AgNPs using PAW formular 2 (PAW2GSNP) and hydropriming with deionised water; untreated seeds were used as the control. Results showed that the best protocol for enhancing seed vigour and germination performance of maize was PAW2. Priming with PAWs, PAW1 or PAW2, has the potential to enhance the physiological quality of maize seeds, particularly new seeds. The limitations of PAW1SNP, PAW1GSNP, PAW2SNP and PAW2GSNP in seed enhancement and storability after priming treatments are discussed.
{"title":"Responses of seed vigour and germination of maize to plasma-activated water priming, silver-nanopriming and green silver-nanopriming","authors":"Worakamol Thongmak, Khomsan Ruangwong, A. Wongkaew, Siwapon Srisonphan, D. Onwimol","doi":"10.15258/sst.2022.50.1.10","DOIUrl":"https://doi.org/10.15258/sst.2022.50.1.10","url":null,"abstract":"The application of atmospheric non-thermal plasmas and nanomaterials for seed technology is relatively new compared to their use in industrial and agricultural sectors. This study aimed to investigate the potential of plasma-activated water (PAW) priming, silver-nanopriming and green silver-nanopriming for seed performance enhancement in maize. The experiment was carried out using two lots of maize seeds with a one-year difference in age. Seed treatment procedures were priming with PAW formular 1 (PAW1), with silver nanoparticles (AgNPs) using PAW formular 1 (PAW1SNP), with green-AgNPs using PAW formular 1 (PAW1GSNP), with PAW formular 2 (PAW2), with AgNPs using PAW formular 2 (PAW2SNP), with green-AgNPs using PAW formular 2 (PAW2GSNP) and hydropriming with deionised water; untreated seeds were used as the control. Results showed that the best protocol for enhancing seed vigour and germination performance of maize was PAW2. Priming with PAWs, PAW1 or PAW2, has the potential to enhance the physiological quality of maize seeds, particularly new seeds. The limitations of PAW1SNP, PAW1GSNP, PAW2SNP and PAW2GSNP in seed enhancement and storability after priming treatments are discussed.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.1.03
Ruiqi Zheng, Zhancang Ma, Li Jiang, Zhen-yong Zhao, Xiang Shi, Lei Wang
Tamarix ramosissima has bi-seasonal flowering and fruiting. Although the basic germination characteristics of T. ramosissima seeds have been evaluated, there is a lack of information about the effects of seed plumpness on germination. Effects of seed plumpness and season of maturity and light conditions on germination were tested. Plump seeds matured in spring or summer had similar size and pappus length. The size of plump seeds was significantly larger than that of shriveled seeds. Both types of seeds matured in summer germinated better than seeds matured in spring. Germination percentage of plump seeds was significant higher than that of shriveled seeds, especially for seeds matured in spring. Darkness significantly decreased the germination of seeds matured in summer. This study provides comprehensive information about the seed germination requirements of T. ramosissima and the results can be used in restoration of desert lands.
{"title":"Germination characteristics of plump and shriveled seeds of Tamarix ramosissima matured in different seasons","authors":"Ruiqi Zheng, Zhancang Ma, Li Jiang, Zhen-yong Zhao, Xiang Shi, Lei Wang","doi":"10.15258/sst.2022.50.1.03","DOIUrl":"https://doi.org/10.15258/sst.2022.50.1.03","url":null,"abstract":"Tamarix ramosissima has bi-seasonal flowering and fruiting. Although the basic germination characteristics of T. ramosissima seeds have been evaluated, there is a lack of information about the effects of seed plumpness on germination. Effects of seed plumpness and season of maturity and light conditions on germination were tested. Plump seeds matured in spring or summer had similar size and pappus length. The size of plump seeds was significantly larger than that of shriveled seeds. Both types of seeds matured in summer germinated better than seeds matured in spring. Germination percentage of plump seeds was significant higher than that of shriveled seeds, especially for seeds matured in spring. Darkness significantly decreased the germination of seeds matured in summer. This study provides comprehensive information about the seed germination requirements of T. ramosissima and the results can be used in restoration of desert lands.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67090698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.1.s.05
Liang Zhao, S. Haque, Ruojing Wang
Applying advanced technologies such as computer vision is highly desirable in seed testing. Among testing needs, computer vision is a feasible technology for conducting seed and seedling classification used in purity analysis and in germination tests. This review focuses on seed identification that currently encounters extreme challenges due to a shortage of expertise, time-consuming training and operation, and the need for large numbers of reference specimens. The reviewed computer vision techniques and application strategies also apply to other methods in seed testing. The review describes the development of machine learning-based computer vision in automating seed identification and their limitations in feature extraction and accuracy. As a subset of machine learning techniques, deep learning has been applied successfully in many agricultural domains, which presents potential opportunities for its application in seed identification and seed testing. To facilitate application in seed testing, the challenges of deep learning-based computer vision systems are summarised through analysing their application in other agricultural domains. It is recommended to accelerate the application in seed testing by optimising procedures or approaches in image acquisition technologies, dataset construction and model development. A concept flow chart for using computer vision systems is proposed to advance computer-assisted seed identification.
{"title":"Invited Review: Automated seed identification with computer vision: challenges and opportunities","authors":"Liang Zhao, S. Haque, Ruojing Wang","doi":"10.15258/sst.2022.50.1.s.05","DOIUrl":"https://doi.org/10.15258/sst.2022.50.1.s.05","url":null,"abstract":"Applying advanced technologies such as computer vision is highly desirable in seed testing. Among testing needs, computer vision is a feasible technology for conducting seed and seedling classification used in purity analysis and in germination tests. This review focuses on seed identification that currently encounters extreme challenges due to a shortage of expertise, time-consuming training and operation, and the need for large numbers of reference specimens. The reviewed computer vision techniques and application strategies also apply to other methods in seed testing. The review describes the development of machine learning-based computer vision in automating seed identification and their limitations in feature extraction and accuracy. As a subset of machine learning techniques, deep learning has been applied successfully in many agricultural domains, which presents potential opportunities for its application in seed identification and seed testing. To facilitate application in seed testing, the challenges of deep learning-based computer vision systems are summarised through analysing their application in other agricultural domains. It is recommended to accelerate the application in seed testing by optimising procedures or approaches in image acquisition technologies, dataset construction and model development. A concept flow chart for using computer vision systems is proposed to advance computer-assisted seed identification.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.3.07
D. Jovičić, Jelena Ovuka, Z. Nikolić, Gordana Petrović, D. Marinkovic, M. Stojanović, G. Tamindžić
Seed deterioration is an unavoidable process to which seeds of oilseed plant species such as sunflower are especially sensitive. This study aimed to determine whether different invigoration techniques can improve the attributes of germination in sunflower and alleviate the effects of seed ageing. Both aged and non-aged seeds were subjected to invigoration by pre-soaking with distilled water and with 3% of KH2PO4 for 24 hours at 25°C. Germination performance, seedling growth and SDS-PAGE protein profile were determined. The outcome of invigoration depended on the condition of the seeds: invigoration of seeds with both water and KH2PO4 reduced the percentage of germination in non-aged seeds, while in aged seeds there was an increase in germination compared to the control. The SDS-PAGE seed protein profiles revealed that the low molecular weight proteins produced high-intensity bands and the high molecular weight proteins were in low concentrations. After accelerated ageing followed by H2O treatment, some bands of proteins appeared in the region of 2S albumins and were associated with a higher percentage of germination. Our results point out that invigoration treatments were more effective in low vigour seeds which can provide wide practical benefits.
{"title":"Potential of two hydration treatments for improvement of sunflower seed vigour","authors":"D. Jovičić, Jelena Ovuka, Z. Nikolić, Gordana Petrović, D. Marinkovic, M. Stojanović, G. Tamindžić","doi":"10.15258/sst.2022.50.3.07","DOIUrl":"https://doi.org/10.15258/sst.2022.50.3.07","url":null,"abstract":"Seed deterioration is an unavoidable process to which seeds of oilseed plant species such as sunflower are especially sensitive. This study aimed to determine whether different invigoration techniques can improve the attributes of germination in sunflower and alleviate the effects of seed ageing. Both aged and non-aged seeds were subjected to invigoration by pre-soaking with distilled water and with 3% of KH2PO4 for 24 hours at 25°C. Germination performance, seedling growth and SDS-PAGE protein profile were determined. The outcome of invigoration depended on the condition of the seeds: invigoration of seeds with both water and KH2PO4 reduced the percentage of germination in non-aged seeds, while in aged seeds there was an increase in germination compared to the control. The SDS-PAGE seed protein profiles revealed that the low molecular weight proteins produced high-intensity bands and the high molecular weight proteins were in low concentrations. After accelerated ageing followed by H2O treatment, some bands of proteins appeared in the region of 2S albumins and were associated with a higher percentage of germination. Our results point out that invigoration treatments were more effective in low vigour seeds which can provide wide practical benefits.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.3.10
E. Ling, M. Masarei, A. Guzzomi, D. Merritt, M. Renton, T. E. Erickson
Flash flaming has shown promise as a seed enhancement technology that improves the handling properties of bulky or irregularly shaped seed material, which in turn benefits logistical and ecological aspects of large-scale direct seeding. To date, only a small number of grass species, that possess similar morphological characteristics, have been tested. This paper describes the application of flash flaming to diaspores (i.e. the dispersal unit comprising the seed and any surrounding or attached tissues) of 19 diverse dryland species from the Amaranthaceae, Asteraceae, Chenopodiaceae and Poaceae critical to ecological restoration in the mining intensive Pilbara region of Western Australia. Flash flaming parameters for each species were tested to identify and maximise volume and mass reduction, reduce particle cohesiveness and maximise flow through a mechanical seeding device, whilst maximising germination. Flaming of all species resulted in reductions in batch volume and mass, and improvements to flow characteristics. For 17 species, flaming either benefited or did not impact on germinability. For two species in the Amaranthaceae, flaming with the settings tested here resulted in a reduction in germinability; however, flaming enabled the diaspores to pass through a mechanical seeding device enabling mechanical distribution which is critical if the species are to be used in large scale restoration.
{"title":"Flash flaming is a valid seed enhancement for a diverse range of species and seed morphologies","authors":"E. Ling, M. Masarei, A. Guzzomi, D. Merritt, M. Renton, T. E. Erickson","doi":"10.15258/sst.2022.50.3.10","DOIUrl":"https://doi.org/10.15258/sst.2022.50.3.10","url":null,"abstract":"Flash flaming has shown promise as a seed enhancement technology that improves the handling properties of bulky or irregularly shaped seed material, which in turn benefits logistical and ecological aspects of large-scale direct seeding. To date, only a small number of grass species, that possess similar morphological characteristics, have been tested. This paper describes the application of flash flaming to diaspores (i.e. the dispersal unit comprising the seed and any surrounding or attached tissues) of 19 diverse dryland species from the Amaranthaceae, Asteraceae, Chenopodiaceae and Poaceae critical to ecological restoration in the mining intensive Pilbara region of Western Australia. Flash flaming parameters for each species were tested to identify and maximise volume and mass reduction, reduce particle cohesiveness and maximise flow through a mechanical seeding device, whilst maximising germination. Flaming of all species resulted in reductions in batch volume and mass, and improvements to flow characteristics. For 17 species, flaming either benefited or did not impact on germinability. For two species in the Amaranthaceae, flaming with the settings tested here resulted in a reduction in germinability; however, flaming enabled the diaspores to pass through a mechanical seeding device enabling mechanical distribution which is critical if the species are to be used in large scale restoration.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.2.12
N. Ergi̇n, M. Kaya, M. Kaya
In this study, we focused on overcoming germination inability in wild castor bean by treatment with different concentrations of gibberellic acid (GA3) and potassium nitrate (KNO3). The caruncle of mature seeds of wild castor bean, collected from natural habitats in Türkiye, were removed at the seed tip. Seeds with or without caruncle were immersed in GA3 and KNO3 at concentrations of 0, 250, 500 and 1000 ppm. Germination and seedling growth parameters were evaluated. Removing the caruncle from the seeds significantly improved germination (from 14.7 to 73.5%) and seedling growth characteristics. Application of KNO3 to the seeds without caruncle shortened mean germination time. GA3 promoted root elongation, but shoot growth was induced by KNO3. Hydration had a stimulative effect on seedling fresh weight and dry matter, while the highest vigour index was identified in seeds primed with GA3. The beneficial effects of KNO3 and GA3 were maximal when treated with 500 ppm and 1000 ppm, respectively, while higher germination and better seedling growth were obtained from hydration compared to KNO3. It is suggested that the presence of the caruncle restricts germination and 1000 ppm GA3 acts as a germination promotor in wild castor bean seeds.
{"title":"GA3 acts as a germination promoter in wild castor bean (Ricinus communis L.)","authors":"N. Ergi̇n, M. Kaya, M. Kaya","doi":"10.15258/sst.2022.50.2.12","DOIUrl":"https://doi.org/10.15258/sst.2022.50.2.12","url":null,"abstract":"In this study, we focused on overcoming germination inability in wild castor bean by treatment with different concentrations of gibberellic acid (GA3) and potassium nitrate (KNO3). The caruncle of mature seeds of wild castor bean, collected from natural habitats in Türkiye, were removed at the seed tip. Seeds with or without caruncle were immersed in GA3 and KNO3 at concentrations of 0, 250, 500 and 1000 ppm. Germination and seedling growth parameters were evaluated. Removing the caruncle from the seeds significantly improved germination (from 14.7 to 73.5%) and seedling growth characteristics. Application of KNO3 to the seeds without caruncle shortened mean germination time. GA3 promoted root elongation, but shoot growth was induced by KNO3. Hydration had a stimulative effect on seedling fresh weight and dry matter, while the highest vigour index was identified in seeds primed with GA3. The beneficial effects of KNO3 and GA3 were maximal when treated with 500 ppm and 1000 ppm, respectively, while higher germination and better seedling growth were obtained from hydration compared to KNO3. It is suggested that the presence of the caruncle restricts germination and 1000 ppm GA3 acts as a germination promotor in wild castor bean seeds.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.15258/sst.2022.50.2.02
Mark Baah-Acheamfour, J. Sobze
The longevity of seeds in storage is modulated by the initial quality as well as the storage conditions. Seeds of four boreal species were stored for a varying amount of time (0, 1, 2, 3 and 4 weeks) at 4°C to determine the appropriate interim storage conditions after harvest and before processing. The highest germination of Solidago canadensis (75%), Shepherdia canadensis (79%) and Populus balsamifera (100%) seeds was observed for the four weeks at 4°C treatment. However, P. tremuloides germination was reduced by 22.5% when seeds were kept at 4°C for 3 or 4 weeks relative to the control; the reduction was less (1.5%) when seeds were kept at 4°C for 1 or 2 weeks. No significant difference in mean germination time (MGT) or germination synchrony (SYN) was recorded following the different storage treatments and the control for Populus tremuloides or P. balsamifera. However, in Shepherdia canadensis, the MGT of the seeds in the 3-week treatment was longer, while in Solidago canadensis, the 3 or 4 weeks at 4°C treatment improved the SYN relative to the control. The result suggests opportunities exist to store certain boreal seeds after harvest and before processing without reducing their germination characteristics.
{"title":"Assessing post-harvest interim seed storage conditions: a case study of four boreal plant species","authors":"Mark Baah-Acheamfour, J. Sobze","doi":"10.15258/sst.2022.50.2.02","DOIUrl":"https://doi.org/10.15258/sst.2022.50.2.02","url":null,"abstract":"The longevity of seeds in storage is modulated by the initial quality as well as the storage conditions. Seeds of four boreal species were stored for a varying amount of time (0, 1, 2, 3 and 4 weeks) at 4°C to determine the appropriate interim storage conditions after harvest and before processing. The highest germination of Solidago canadensis (75%), Shepherdia canadensis (79%) and Populus balsamifera (100%) seeds was observed for the four weeks at 4°C treatment. However, P. tremuloides germination was reduced by 22.5% when seeds were kept at 4°C for 3 or 4 weeks relative to the control; the reduction was less (1.5%) when seeds were kept at 4°C for 1 or 2 weeks. No significant difference in mean germination time (MGT) or germination synchrony (SYN) was recorded following the different storage treatments and the control for Populus tremuloides or P. balsamifera. However, in Shepherdia canadensis, the MGT of the seeds in the 3-week treatment was longer, while in Solidago canadensis, the 3 or 4 weeks at 4°C treatment improved the SYN relative to the control. The result suggests opportunities exist to store certain boreal seeds after harvest and before processing without reducing their germination characteristics.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"634 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：