Pub Date : 1900-01-01DOI: 10.5958/2231-1750.2016.00013.5
P. Jyothi, S. Sureshkumar
Kole wetlands in Kerala, holds very high diversity of untapped endemic aquatic plant resources which have high potential on ornamental plants for the aquarium industry. The paper presents an overview of the floristic survey of aquatic ornamental plants carried out during the year 2012–2014 in the Kole wetland ecosystem of Kerala. The study aimed at exploring and documenting the ornamental plant wealth of this area, which still remains unknown. The investigation on the availability and abundance of ornamental plants in the Ponnani Kole revealed the presence of 32 species under 24 genera and 19 families. In the present analysis of Kole wetland flora, members of the family Scrophulariaceae were predominant followed by Lentibulariaceae and Hydrocharitaceae. Nymphaea nouchali, Nymphaea pubescence, Myriophyllum oliganthum, Nymphoides indica, Nymphoides crystatum, Bacopa monnieri, Limnophila heterophylla, Limnophila repens, Utricularia aurea, Utricularia exoleata, Alternanthera philoxeroides, Hydrilla verticillata, Vallisneria natans Eichhornia crassipes, Hygroryza aristata, Najas graminea Marsilea quadrifolia and Ceratopteris thalictroides are frequent in all seasons in the study area. The abundance of these plants in the Kole wetlands has been worked out with a view to develop harvest strategies and suggest management measures. The increased popularity of water gardening and aquarium planting in turn augment the harvest of the freshwater plants which may result in depletion of these resources. Therefore, population of these plant species needs to be maintained in-situ by adopting structured cultivation techniques and suitable conservation methods. Kole wetlands are not only important in terms of making the ecological system available for a variety of animals and maintaining the micro-climate of the region, but also for providing useful resources for livelihood, healthcare and aesthetic interest.
{"title":"Aquatic Ornamental Macrophytes in Kole Wetlands: An Untapped Resource for Sustainable Utilisation","authors":"P. Jyothi, S. Sureshkumar","doi":"10.5958/2231-1750.2016.00013.5","DOIUrl":"https://doi.org/10.5958/2231-1750.2016.00013.5","url":null,"abstract":"Kole wetlands in Kerala, holds very high diversity of untapped endemic aquatic plant resources which have high potential on ornamental plants for the aquarium industry. The paper presents an overview of the floristic survey of aquatic ornamental plants carried out during the year 2012–2014 in the Kole wetland ecosystem of Kerala. The study aimed at exploring and documenting the ornamental plant wealth of this area, which still remains unknown. The investigation on the availability and abundance of ornamental plants in the Ponnani Kole revealed the presence of 32 species under 24 genera and 19 families. In the present analysis of Kole wetland flora, members of the family Scrophulariaceae were predominant followed by Lentibulariaceae and Hydrocharitaceae. Nymphaea nouchali, Nymphaea pubescence, Myriophyllum oliganthum, Nymphoides indica, Nymphoides crystatum, Bacopa monnieri, Limnophila heterophylla, Limnophila repens, Utricularia aurea, Utricularia exoleata, Alternanthera philoxeroides, Hydrilla verticillata, Vallisneria natans Eichhornia crassipes, Hygroryza aristata, Najas graminea Marsilea quadrifolia and Ceratopteris thalictroides are frequent in all seasons in the study area. The abundance of these plants in the Kole wetlands has been worked out with a view to develop harvest strategies and suggest management measures. The increased popularity of water gardening and aquarium planting in turn augment the harvest of the freshwater plants which may result in depletion of these resources. Therefore, population of these plant species needs to be maintained in-situ by adopting structured cultivation techniques and suitable conservation methods. Kole wetlands are not only important in terms of making the ecological system available for a variety of animals and maintaining the micro-climate of the region, but also for providing useful resources for livelihood, healthcare and aesthetic interest.","PeriodicalId":231568,"journal":{"name":"Journal of Functional and Environmental Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115762059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5958/2231-1750.2017.00007.5
S. Prajapati, P. Jain, O. Singh
The present investigation resulted that treatment (T17) Salicylic acid (250 mg/L) at 30 days after sowing and 30, 45, 60 days after transplanting with Azospirillum (5 kg ha−1) at 60 days after sowing was performed significantly superior over control such as highest plant height at harvest (49.97 cm), length of leaves (45.37 cm), number of leaf per plant (19.77), equatorial diameter (64.04 mm), polar diameter (61.40 mm), double bulb (0.33%), the lowest A, B and C grade bulb (38.49%), (66.37%) and (13.29%) respectively, bulb yield polt−1(14.90 kg), marketable bulb yield (28.53 t ha−1), total bulb yield high value in T11 (29.66 t ha−1). The minimum occurrence of purple blotch in month of February, March and April were recorded under (0.0%), (1.56%), (1.46%) respectively in T5-Salicylic acid (250 mg/L) at 30 days after sowing, 30, 60 days after transplanting followed by (T13) and (T17) over control T18. The minimum (0.0%) occurrence of stemphylium blight (January) was noted in T11-Salicylic acid (250 mg/L) at 30 days after sowing, 30, 45, 60 days after transplanting + Azospirillum (5 kg/ha) at 30 days after transplanting fallowed by (T13) and (T14). In February, March and April months it were noted under treatment (T17) and (T5) over control. The minimum (0.0%) occurrence of thrips in January was found under treatment (T11) and (T11) followed by (T12), (6.07%) occurrence in February was found under treatment (T17), (10.0%) occurrence in March was found under treatment (T17) followed by (T16) (T15), (7.12%) occurrence of thrips in April was found under treatment (T17) followed by (T5) (8.40%). The treatment (T11) recorded highest gross monitory return (Rs. 290660 ha−1) but net return (Rs. 225555 ha−1) and benefit cost ratio 3.44 recorded under (T12) followed by (T16) 3.42 and (T17) 3.40. However, minimum gross income (Rs. 220130 ha−1), net return (Rs. 155870 ha−1) with benefit cost ratio 2.42 was recorded in control.
结果表明:水杨酸(250 mg/L)处理(T17)在播种后30 d和播种后30、45、60 d与偶氮螺旋藻(5 kg ha - 1)一起移栽后60 d，收获时最高株高(49.97 cm)、叶长(45.37 cm)、单株叶数(19.77)、赤道径(64.04 mm)、极径(61.40 mm)、双瓣球茎(0.33%)、最低A、B、C级球茎(38.49%)、最高株高(0.33%)、最高株高(0.33%)、最高株高(0.33%)和最高株高(0.33%)均显著优于对照。(66.37%)和(13.29%)，鳞茎产量(14.90 kg)，商品鳞茎产量(28.53 t ha - 1)，总鳞茎产量高值(29.66 t ha - 1)。2月、3月和4月，t5 -水杨酸(250 mg/L)在播种后30天、移栽后30天、60天紫色斑病发生率最低，分别为(0.0%)、(1.56%)和(1.46%)，其次是(T13)和(T17)高于对照T18。t11 -水杨酸(250 mg/L)在播种后30天，移栽后30、45、60天+氮螺旋藻(5 kg/ha)在移栽后30天，然后是(T13)和(T14)，在1月份发生茎枯病最少(0.0%)。在2月、3月和4月分别观察到治疗(T17)和控制(T5)。处理(T11)、(T11)、(T12)在1月的发生率最低(0.0%)，2月的发生率为(6.07%)，3月的发生率为(10.0%)，处理(T17)、(T16)、(T15)， 4月的发生率为(7.12%)，处理(T17)、(T5)(8.40%)。处理(T11)记录了最高的总监测收益(290660公顷- 1卢比)，但在(T12)下记录的净收益(225555公顷- 1卢比)和效益成本比为3.44，其次是(T16) 3.42和(T17) 3.40。然而，最低毛收入(220130 ha - 1卢比)，净收益(155870 ha - 1卢比)，收益成本比为2.42。
{"title":"Improving Onion (Allium cepa L.) Growth and Bulb Yield by Application of Salicylic acid and Azospirillum","authors":"S. Prajapati, P. Jain, O. Singh","doi":"10.5958/2231-1750.2017.00007.5","DOIUrl":"https://doi.org/10.5958/2231-1750.2017.00007.5","url":null,"abstract":"The present investigation resulted that treatment (T17) Salicylic acid (250 mg/L) at 30 days after sowing and 30, 45, 60 days after transplanting with Azospirillum (5 kg ha−1) at 60 days after sowing was performed significantly superior over control such as highest plant height at harvest (49.97 cm), length of leaves (45.37 cm), number of leaf per plant (19.77), equatorial diameter (64.04 mm), polar diameter (61.40 mm), double bulb (0.33%), the lowest A, B and C grade bulb (38.49%), (66.37%) and (13.29%) respectively, bulb yield polt−1(14.90 kg), marketable bulb yield (28.53 t ha−1), total bulb yield high value in T11 (29.66 t ha−1). The minimum occurrence of purple blotch in month of February, March and April were recorded under (0.0%), (1.56%), (1.46%) respectively in T5-Salicylic acid (250 mg/L) at 30 days after sowing, 30, 60 days after transplanting followed by (T13) and (T17) over control T18. The minimum (0.0%) occurrence of stemphylium blight (January) was noted in T11-Salicylic acid (250 mg/L) at 30 days after sowing, 30, 45, 60 days after transplanting + Azospirillum (5 kg/ha) at 30 days after transplanting fallowed by (T13) and (T14). In February, March and April months it were noted under treatment (T17) and (T5) over control. The minimum (0.0%) occurrence of thrips in January was found under treatment (T11) and (T11) followed by (T12), (6.07%) occurrence in February was found under treatment (T17), (10.0%) occurrence in March was found under treatment (T17) followed by (T16) (T15), (7.12%) occurrence of thrips in April was found under treatment (T17) followed by (T5) (8.40%). The treatment (T11) recorded highest gross monitory return (Rs. 290660 ha−1) but net return (Rs. 225555 ha−1) and benefit cost ratio 3.44 recorded under (T12) followed by (T16) 3.42 and (T17) 3.40. However, minimum gross income (Rs. 220130 ha−1), net return (Rs. 155870 ha−1) with benefit cost ratio 2.42 was recorded in control.","PeriodicalId":231568,"journal":{"name":"Journal of Functional and Environmental Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115915700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5958/2231-1750.2015.00014.1
B. Saleem, P. K. Paul
A wide array of bacterial and microfungal species possess features, like secretion of metabolic compounds or toxins that help them in interaction with each other or suppression of their growth. In the present study, bacteria were isolated from the phylloplane of Lycopersicum esculentum, to evaluate their antifungal properties tested against microfungal species isolated from the same habitat. Bacterial and fungal isolates were obtained by the leaf imprint technique and pure cultures were made on nutrient agar and potato dextrose agar at 35±1°C and 25±1°C, respectively. The antagonistic activity was tested by dual culture assay. It was found that the growth of Rhizoctonia solani, Alternaria alternata, A. citrifolia, Penicillium expansum, Fusarium oxysporum, Cladosporium herbarum, C. cladosporioides, Curvularia lunata, Aspergillus flavus and A. candidus was inhibited by Pseudomonas koreensis, P. stutzeri, Sphingobacterium daejeonense and Klebsiella pneumonea.
{"title":"Antifungal Activity of Bacteria on Phylloplane of Tomato","authors":"B. Saleem, P. K. Paul","doi":"10.5958/2231-1750.2015.00014.1","DOIUrl":"https://doi.org/10.5958/2231-1750.2015.00014.1","url":null,"abstract":"A wide array of bacterial and microfungal species possess features, like secretion of metabolic compounds or toxins that help them in interaction with each other or suppression of their growth. In the present study, bacteria were isolated from the phylloplane of Lycopersicum esculentum, to evaluate their antifungal properties tested against microfungal species isolated from the same habitat. Bacterial and fungal isolates were obtained by the leaf imprint technique and pure cultures were made on nutrient agar and potato dextrose agar at 35±1°C and 25±1°C, respectively. The antagonistic activity was tested by dual culture assay. It was found that the growth of Rhizoctonia solani, Alternaria alternata, A. citrifolia, Penicillium expansum, Fusarium oxysporum, Cladosporium herbarum, C. cladosporioides, Curvularia lunata, Aspergillus flavus and A. candidus was inhibited by Pseudomonas koreensis, P. stutzeri, Sphingobacterium daejeonense and Klebsiella pneumonea.","PeriodicalId":231568,"journal":{"name":"Journal of Functional and Environmental Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122984171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5958/2231-1750.2014.00008.0
K. Jamal
Red cotton bug Dysdercus koenigii F. (Hemiptera: Pyrrhocoridae) is a serious destructive pest of a large number of economically important crops including cotton. Being pest of many important crops, the present study was intended to investigate the comparative survivability, developmental rates, weight gain and reproductive potential of D. koenigii on five different host plant species, namely, okra (Abelmoschus esculentus), ground nut (Arachis hypogaea) yellow corn, (Zea mays) castor (Ricinus communis) and cotton (Gossypium hirsutum) under laboratory conditions. Maximum nymphal survivability, high nymphal weight, maximum egg production and egg hatching as well as shortest nymphal duration were observed on cotton as compared to okra, ground nut and yellow corn; however, castor was recorded as very poor host plant that could not support the survival and development of D. koenigii beyond 3rd instar. The adults emerged from the cotton and okra fed nymphs mates 3–4 times in their total life span, whereas only 1–2 time mating was observed in those adults that emerged from ground nut and yellow cord-fed nymphs. On the basis of nymphal and adult survivability, weight gain, egg production, egg hatching and longevity, the cotton (G. hirsutum) was regarded as a best host plant followed by okra (A. esculentus), ground nut (A. hypogaea) and yellow corn (Z. mays). The knowledge obtained during this study regarding food preference of D. koenigii may help in devising IPM strategies in cotton fields adjacent to or near vegetative fields containing alternative host plant.
{"title":"Effect of Host Plant on Survivability, Development and Reproductive Potential of Cotton Stainer Bug Dysdercus koenigii (Hemiptera: Pyrrhocoridae)","authors":"K. Jamal","doi":"10.5958/2231-1750.2014.00008.0","DOIUrl":"https://doi.org/10.5958/2231-1750.2014.00008.0","url":null,"abstract":"Red cotton bug Dysdercus koenigii F. (Hemiptera: Pyrrhocoridae) is a serious destructive pest of a large number of economically important crops including cotton. Being pest of many important crops, the present study was intended to investigate the comparative survivability, developmental rates, weight gain and reproductive potential of D. koenigii on five different host plant species, namely, okra (Abelmoschus esculentus), ground nut (Arachis hypogaea) yellow corn, (Zea mays) castor (Ricinus communis) and cotton (Gossypium hirsutum) under laboratory conditions. Maximum nymphal survivability, high nymphal weight, maximum egg production and egg hatching as well as shortest nymphal duration were observed on cotton as compared to okra, ground nut and yellow corn; however, castor was recorded as very poor host plant that could not support the survival and development of D. koenigii beyond 3rd instar. The adults emerged from the cotton and okra fed nymphs mates 3–4 times in their total life span, whereas only 1–2 time mating was observed in those adults that emerged from ground nut and yellow cord-fed nymphs. On the basis of nymphal and adult survivability, weight gain, egg production, egg hatching and longevity, the cotton (G. hirsutum) was regarded as a best host plant followed by okra (A. esculentus), ground nut (A. hypogaea) and yellow corn (Z. mays). The knowledge obtained during this study regarding food preference of D. koenigii may help in devising IPM strategies in cotton fields adjacent to or near vegetative fields containing alternative host plant.","PeriodicalId":231568,"journal":{"name":"Journal of Functional and Environmental Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122064306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5958/2231-1750.2015.00019.0
S. Jalili, Somayyeh Safiallah
Lonicera microphylla is one of many spieces of Lonicera genus that are recently reported in Iran. The present study describes the micromorphology of L. microphylla by employing light microscopy (LM) and scaning electron microscopy (SEM) for taxonomical significance. Important micromorpholoical traits such as pollen micromorphology and leaf epidermis were used. The micromorpholoical results clearly support the micromorphology characteristics of L. microphylla with the genus Lonicera species. The results might provide a scientific basis for the taxonomic study of the genus Lonicera.
{"title":"Micromorpholoy and Taxonomic Signification of Lonicera microphylla from Iran","authors":"S. Jalili, Somayyeh Safiallah","doi":"10.5958/2231-1750.2015.00019.0","DOIUrl":"https://doi.org/10.5958/2231-1750.2015.00019.0","url":null,"abstract":"Lonicera microphylla is one of many spieces of Lonicera genus that are recently reported in Iran. The present study describes the micromorphology of L. microphylla by employing light microscopy (LM) and scaning electron microscopy (SEM) for taxonomical significance. Important micromorpholoical traits such as pollen micromorphology and leaf epidermis were used. The micromorpholoical results clearly support the micromorphology characteristics of L. microphylla with the genus Lonicera species. The results might provide a scientific basis for the taxonomic study of the genus Lonicera.","PeriodicalId":231568,"journal":{"name":"Journal of Functional and Environmental Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131694609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5958/2231-1750.2015.00010.4
R. Chandel, Z. Khan, S. Gandotra
This study was done to observe alterations in protein and isozyme profiles for soybean (Glycine max (L.) Merrill), during accelerated aeging. During the aeging period some physiological (percent germination, seedling vigour index and germination index) and biochemical (electrical conductivity, malonaldehyde content, total soluble sugars, total soluble proteins, peroxidase and dehydrogenase activity) changes were also observed in relation to seed vigour and viability in fresh and aged soybean seeds. Results showed an overall decrease in germination, vigour, soluble sugars and soluble protein content with increase in ageing duration. Increased activity of lipid peroxidation and electrical conductivity coupled with significant reduction in activities of peroxidase and dehydrogenase were noticed in accelerated aged seeds. Alterations in protein and isozymes profiles in aged seeds compared to fresh seeds indicated that the loss in seeds quality might be due to the adverse effect of ageing on proteins. The electrophoretic variations in protein and isozymes noticed in this study could be used as a criterion in assessing the quality of soybean.
本研究旨在观察大豆(Glycine max (L.))蛋白和同工酶谱的变化。在加速老化期间。在老化过程中，新鲜和陈化大豆种子的一些生理变化(发芽率、幼苗活力指数和发芽指数)和生化变化(电导率、丙二醛含量、总可溶性糖、总可溶性蛋白、过氧化物酶和脱氢酶活性)也与种子活力和活力有关。结果表明，随着老化时间的延长，芽苗率、活力、可溶性糖和可溶性蛋白含量总体下降。加速老化种子的脂质过氧化和电导率活性增加，过氧化物酶和脱氢酶活性显著降低。与新鲜种子相比，老化种子中蛋白质和同工酶谱的变化表明，种子质量的下降可能是由于老化对蛋白质的不利影响。本研究发现的蛋白质和同工酶的电泳变化可作为评价大豆品质的一个标准。
{"title":"Alterations in Protein and Isozymes Profiles during Accelerated Ageing in Soybean (Glycine Max (L.) Merrill)","authors":"R. Chandel, Z. Khan, S. Gandotra","doi":"10.5958/2231-1750.2015.00010.4","DOIUrl":"https://doi.org/10.5958/2231-1750.2015.00010.4","url":null,"abstract":"This study was done to observe alterations in protein and isozyme profiles for soybean (Glycine max (L.) Merrill), during accelerated aeging. During the aeging period some physiological (percent germination, seedling vigour index and germination index) and biochemical (electrical conductivity, malonaldehyde content, total soluble sugars, total soluble proteins, peroxidase and dehydrogenase activity) changes were also observed in relation to seed vigour and viability in fresh and aged soybean seeds. Results showed an overall decrease in germination, vigour, soluble sugars and soluble protein content with increase in ageing duration. Increased activity of lipid peroxidation and electrical conductivity coupled with significant reduction in activities of peroxidase and dehydrogenase were noticed in accelerated aged seeds. Alterations in protein and isozymes profiles in aged seeds compared to fresh seeds indicated that the loss in seeds quality might be due to the adverse effect of ageing on proteins. The electrophoretic variations in protein and isozymes noticed in this study could be used as a criterion in assessing the quality of soybean.","PeriodicalId":231568,"journal":{"name":"Journal of Functional and Environmental Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132602923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5958/J.2231-1742.1.1.001
N. Dhawan, S. Umar, T. O. Siddiqi, M. Iqbal
Field experiment was conducted to find out the influence of different potassium concentrations [0, 40, 80, 120 kg K ha−1] on the nitrogen, nitrate and sulphur contents, nitrate reductase activity, and yield of three genotypes [G1, G2 and G3] of Lepidium sativum Linn. G2 was found to be most responsive to potassium treatment. K+ fertilization had a positive effect on the uptake, translocation and reduction of NO3− in leaves at various stages of plant development. The amount of toxic nitrate was reduced whereas yield quality improved in response to potassium fertilization. The study inferred that for cultivation of L. sativum in field conditions 80 kg K ha−1 dose was most appropriate.
通过田间试验，研究了不同钾浓度[0、40、80、120 kg K ha−1]对3个基因型[G1、G2和G3]小麦氮素、硝酸盐和硫含量、硝酸盐还原酶活性及产量的影响。G2对钾处理反应最明显。K+施肥对植物发育各阶段叶片对NO3−的吸收、转运和还原均有积极影响。施钾减少了有毒硝酸盐的用量，提高了产量品质。研究认为，在田间条件下，以80 kg K ha−1的剂量为宜。
{"title":"Nitrogen Assimilation and Yield of Lepidium Sativum [L.] As Affected by Potassium Availability","authors":"N. Dhawan, S. Umar, T. O. Siddiqi, M. Iqbal","doi":"10.5958/J.2231-1742.1.1.001","DOIUrl":"https://doi.org/10.5958/J.2231-1742.1.1.001","url":null,"abstract":"Field experiment was conducted to find out the influence of different potassium concentrations [0, 40, 80, 120 kg K ha−1] on the nitrogen, nitrate and sulphur contents, nitrate reductase activity, and yield of three genotypes [G1, G2 and G3] of Lepidium sativum Linn. G2 was found to be most responsive to potassium treatment. K+ fertilization had a positive effect on the uptake, translocation and reduction of NO3− in leaves at various stages of plant development. The amount of toxic nitrate was reduced whereas yield quality improved in response to potassium fertilization. The study inferred that for cultivation of L. sativum in field conditions 80 kg K ha−1 dose was most appropriate.","PeriodicalId":231568,"journal":{"name":"Journal of Functional and Environmental Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125419307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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