Meng-Ke Cao, Dong Wang, Lingyu Qiu, X. Ren, Huiling Ma
Phenotypic changes caused by postharvest deterioration of the quality attributes of apples cause substantial economic losses. Thus, strategies for accurate prediction of the shelf life of apples is urgently needed. In each of the three consecutive years from 2016 to 2018, freshly harvested ‘Royal Gala’ apples were stored at 0, 5, 15, and 25°C, respectively. Subsequently, 11 quality attributes were measured at periodic intervals until the end of storage. To screen fewer and more useful indexes, three input datasets were considered: temperature, color value (L*, a*, b*, △E, and C*), weight loss, firmness, titratable acidity, soluble solids content, starch, and reducing ascorbic acid (D1). The key quality attributes were screened by sparse principal component analysis (SPCA) (D2) and correlation analysis (CA) (D3), using shelf life as the output layer of the artificial neural network based on the back propagation (BP ANN) model. The results showed that the correlation coefficients (r) of the predicted and measured shelf life for D1, D2, and D3 were 0.996, 0.997, and 0.993, respectively, while the mean relative errors were 0.071, 0.074, and 0.074, respectively. Meanwhile, the relative percent root mean square (RMS) values were 0.088, 0.092, and 0.112, respectively. The application of SPCA reduced the quality attributes for the input dataset from 12 to 6. Therefore, SPCA-BP ANN was shown to be a useful model for accurate prediction of the postharvest shelf life of ‘Royal Gala’ apples. Additional key words: artificial neural network, correlation analysis, model, sparse principal component analysis, storage
{"title":"Shelf Life Prediction of ‘Royal Gala’ Apples Based on Quality Attributes and Storage Temperature","authors":"Meng-Ke Cao, Dong Wang, Lingyu Qiu, X. Ren, Huiling Ma","doi":"10.7235/HORT.20210031","DOIUrl":"https://doi.org/10.7235/HORT.20210031","url":null,"abstract":"Phenotypic changes caused by postharvest deterioration of the quality attributes of apples cause substantial economic losses. Thus, strategies for accurate prediction of the shelf life of apples is urgently needed. In each of the three consecutive years from 2016 to 2018, freshly harvested ‘Royal Gala’ apples were stored at 0, 5, 15, and 25°C, respectively. Subsequently, 11 quality attributes were measured at periodic intervals until the end of storage. To screen fewer and more useful indexes, three input datasets were considered: temperature, color value (L*, a*, b*, △E, and C*), weight loss, firmness, titratable acidity, soluble solids content, starch, and reducing ascorbic acid (D1). The key quality attributes were screened by sparse principal component analysis (SPCA) (D2) and correlation analysis (CA) (D3), using shelf life as the output layer of the artificial neural network based on the back propagation (BP ANN) model. The results showed that the correlation coefficients (r) of the predicted and measured shelf life for D1, D2, and D3 were 0.996, 0.997, and 0.993, respectively, while the mean relative errors were 0.071, 0.074, and 0.074, respectively. Meanwhile, the relative percent root mean square (RMS) values were 0.088, 0.092, and 0.112, respectively. The application of SPCA reduced the quality attributes for the input dataset from 12 to 6. Therefore, SPCA-BP ANN was shown to be a useful model for accurate prediction of the postharvest shelf life of ‘Royal Gala’ apples. Additional key words: artificial neural network, correlation analysis, model, sparse principal component analysis, storage","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45128923","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}
Hyeong Ho Kang, E. Oh, Kyeong Uk Lee, Y. Kwack, Mockhee Lee, K. Song
{"title":"Comparison of Fruit Development Characteristics and Sucrose Metabolizing Enzyme Activity in Different Kiwifruit Cultivars","authors":"Hyeong Ho Kang, E. Oh, Kyeong Uk Lee, Y. Kwack, Mockhee Lee, K. Song","doi":"10.7235/HORT.20210019","DOIUrl":"https://doi.org/10.7235/HORT.20210019","url":null,"abstract":"","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46450058","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}
Woodae Kim, J. Jeong, Suhyun Ryu, Seulki Lee, J. Han, J. Cho
{"title":"Structural Change in Peach Production and Dynamic Relationship between Its Production and Area using Time Series Analysis","authors":"Woodae Kim, J. Jeong, Suhyun Ryu, Seulki Lee, J. Han, J. Cho","doi":"10.7235/HORT.20210024","DOIUrl":"https://doi.org/10.7235/HORT.20210024","url":null,"abstract":"","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42553905","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}
This study was conducted to examine the effects of relighting and daminozide treatment on growth and flowering characteristics, length of cut flowers, upper leaf size, and peduncle length in the flower bud formation stage of Chrysanthemum morifolium ‘Baekma’. Relighting for 4-8 hr at 10 days after transition to short-day conditions increased the length of cut flowers, number of leaves, flower diameter, and fresh weight of flowers compared to the control. The upper leaf area was biggest after relighting for 8 hr than in the other treatments. However, relighting for 4-8 hr was not effective for increasing the number of ray florets and delayed flowering by 6-8 days. The two daminozide treatments at 18 (stage I) and 28 (stage II) days after transition to short-day conditions shortened the length of cut flowers, but number of leaves and fresh weight of cut flowers increased in all other daminozide treatments. The peduncle length was longest in the control and was 2.6-3.2 cm in one treatment with 800 mg·L -1 daminozide and two treatments with 400 and 800 mg·L -1 daminozide regardless of stage. The upper leaf area was the smallest in control and biggest in one treatment with 800 mg·L -1 daminozide at stage I and two treatments with 400 mg·L -1 at stage I and 800 mg·L -1 daminozide at stage II. The flower diameter and fresh weight were greater in daminozide treatments than in the control. The number of ray florets increased by 9-11% in one treatment with 800 mg·L -1 at stage I or 400 mg·L -1 daminozide at stage II but decreased in two treatments of daminozide. The days to flowering were delayed by 2-6 days in daminozide treatments than in control. Therefore, it is suggested that relighting for 8 hr at 10 days and treatment of 800 mg·L -1 daminozide at 18 days after transition to short-day conditions are effective in improving the quality of cut flowers by shortening the peduncle length and increasing the growth of the upper leaf area, the length of cut flowers, and the flower diameter. Additional key words: days to flowering, peduncle length, ray florets, short-day condition, upper leaf size
{"title":"Growth and Flowering by Relighting and Daminozide Treatment in the Flower Bud Formation Stage of Chrysanthemum morifolium ‘Baekma’ Cut Flowers","authors":"Y. S. Roh, Y. Yoo","doi":"10.7235/HORT.20210018","DOIUrl":"https://doi.org/10.7235/HORT.20210018","url":null,"abstract":"This study was conducted to examine the effects of relighting and daminozide treatment on growth and flowering characteristics, length of cut flowers, upper leaf size, and peduncle length in the flower bud formation stage of Chrysanthemum morifolium ‘Baekma’. Relighting for 4-8 hr at 10 days after transition to short-day conditions increased the length of cut flowers, number of leaves, flower diameter, and fresh weight of flowers compared to the control. The upper leaf area was biggest after relighting for 8 hr than in the other treatments. However, relighting for 4-8 hr was not effective for increasing the number of ray florets and delayed flowering by 6-8 days. The two daminozide treatments at 18 (stage I) and 28 (stage II) days after transition to short-day conditions shortened the length of cut flowers, but number of leaves and fresh weight of cut flowers increased in all other daminozide treatments. The peduncle length was longest in the control and was 2.6-3.2 cm in one treatment with 800 mg·L -1 daminozide and two treatments with 400 and 800 mg·L -1 daminozide regardless of stage. The upper leaf area was the smallest in control and biggest in one treatment with 800 mg·L -1 daminozide at stage I and two treatments with 400 mg·L -1 at stage I and 800 mg·L -1 daminozide at stage II. The flower diameter and fresh weight were greater in daminozide treatments than in the control. The number of ray florets increased by 9-11% in one treatment with 800 mg·L -1 at stage I or 400 mg·L -1 daminozide at stage II but decreased in two treatments of daminozide. The days to flowering were delayed by 2-6 days in daminozide treatments than in control. Therefore, it is suggested that relighting for 8 hr at 10 days and treatment of 800 mg·L -1 daminozide at 18 days after transition to short-day conditions are effective in improving the quality of cut flowers by shortening the peduncle length and increasing the growth of the upper leaf area, the length of cut flowers, and the flower diameter. Additional key words: days to flowering, peduncle length, ray florets, short-day condition, upper leaf size","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42817907","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}
J. An, S. Jeon, M. Lee, D. Jang, E. Choi, J. Na, K. Choi
This experiment was conducted to investigate the effect of the soil irrigation starting point on the growth and water use efficiency of cucumber at each growth stage in a greenhouse. Cucumber (Cucumis sativus L.) ‘Chungchun’ grafting seedlings were transplanted on April 20, 2020 and cultivated until July 5, 2020 in a polyethylene greenhouse in Chuncheon-si, Gangwon-do. Soil irrigation starting point using a tensiometer were treated in 10-10-10 (T1), 10-10-20 (T2), 20-10-10 (T3), 20-10-20 (T4), and a control. The total amounts of irrigation, growth, yield and water use efficiency were measured. The average daily soil water tension (kPa) was 8.3 for T1, 9.2 for T2, 10.7 for T3, 10.2 for T4, and 5.9 for the control. The total amount of irrigation supplied was from 53,322 mL (T1) to 59,206 mL (T4), there was no difference between treatments. The average daily irrigation amount per plant was 773 mL (T1), 787 mL (T2), 780 mL (T3), and 858 mL (T4). The total number and intervals of the irrigations were not different from 86 times (T3) to 99 times (T1) and 0.7days. In the control, the daily average amount of irrigation was 1,525 mL, and the total number of irrigations was 50. In the control, the average amount of irrigation was twice that of the treatments (T1, T2, T3, and T4), and the number of irrigations was reduced by more than 40%. On the 43rd day of treatment, plant height, number of nodes, leaf width, and number of leaves were highest in the control, and the lowest plant height was in T3 and T4 treatments. There was no significant difference
{"title":"Effect of Soil Irrigation Starting Point Using Tensiometer on Growth and Water Use of Cucumber in Greenhouse","authors":"J. An, S. Jeon, M. Lee, D. Jang, E. Choi, J. Na, K. Choi","doi":"10.7235/HORT.20210021","DOIUrl":"https://doi.org/10.7235/HORT.20210021","url":null,"abstract":"This experiment was conducted to investigate the effect of the soil irrigation starting point on the growth and water use efficiency of cucumber at each growth stage in a greenhouse. Cucumber (Cucumis sativus L.) ‘Chungchun’ grafting seedlings were transplanted on April 20, 2020 and cultivated until July 5, 2020 in a polyethylene greenhouse in Chuncheon-si, Gangwon-do. Soil irrigation starting point using a tensiometer were treated in 10-10-10 (T1), 10-10-20 (T2), 20-10-10 (T3), 20-10-20 (T4), and a control. The total amounts of irrigation, growth, yield and water use efficiency were measured. The average daily soil water tension (kPa) was 8.3 for T1, 9.2 for T2, 10.7 for T3, 10.2 for T4, and 5.9 for the control. The total amount of irrigation supplied was from 53,322 mL (T1) to 59,206 mL (T4), there was no difference between treatments. The average daily irrigation amount per plant was 773 mL (T1), 787 mL (T2), 780 mL (T3), and 858 mL (T4). The total number and intervals of the irrigations were not different from 86 times (T3) to 99 times (T1) and 0.7days. In the control, the daily average amount of irrigation was 1,525 mL, and the total number of irrigations was 50. In the control, the average amount of irrigation was twice that of the treatments (T1, T2, T3, and T4), and the number of irrigations was reduced by more than 40%. On the 43rd day of treatment, plant height, number of nodes, leaf width, and number of leaves were highest in the control, and the lowest plant height was in T3 and T4 treatments. There was no significant difference","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45370314","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}
Based on 13 C isotope tracer technology, we investigated the 13 C abundance (δ 13 C), 13 C content ( 13 Camount), and new fixed 13 C percentage ( 13 CPCT) in different organs and different metabolic components in girdled fruit-bearing shoots at different stages of fruit growth and development in walnut. Our aim was to analyze the dynamic characteristics of carbohydrate assimilation, transportation, and utilization in different stages of walnut fruit growth and development. The results showed that (1) at 0 h after the feeding, δ 13 C, 13 Camount, and 13 CPCT in sucrose from the leaves were the highest and positively correlated with net photosynthetic rate of leaves (p < 0.05); (2) at 24 h after the feeding, δ 13 C, 13 Camount, and 13 CPCT in sucrose from the carpopodium reached their peak values; (3) δ 13 C, 13 Camount, and 13 CPCT in sucrose from the peel were lower than those of hexose at 48 h after feeding in the fast-growing stage, but they all reached maximum levels in peel sucrose at 48 h after feeding in the oil conversion stage; and (4) the highest δ 13 C, 13 Camount, and 13 CPCT were recorded in all carbohydrates from the seed kernel 48 h after feeding, among which the highest δ 13 C, 13 Camount, and 13 CPCT were recorded in sucrose. These results suggested that sucrose was the main form of carbohydrate assimilation and transportation in walnut fruit, and large amounts of sucrose are accumulated in the peel and in the kernel, where it is also the base for the transformation of oil. Additional key words: 13 C isotope, carpopodium, fruit development, photosynthesis, seasonal changes
{"title":"Characteristics of Carbohydrate Assimilation and Distribution in Walnut (Juglans regia L.)","authors":"Shiwei Wang, C. Pan, Cuifang Zhang, Hong Chen","doi":"10.7235/HORT.20210014","DOIUrl":"https://doi.org/10.7235/HORT.20210014","url":null,"abstract":"Based on 13 C isotope tracer technology, we investigated the 13 C abundance (δ 13 C), 13 C content ( 13 Camount), and new fixed 13 C percentage ( 13 CPCT) in different organs and different metabolic components in girdled fruit-bearing shoots at different stages of fruit growth and development in walnut. Our aim was to analyze the dynamic characteristics of carbohydrate assimilation, transportation, and utilization in different stages of walnut fruit growth and development. The results showed that (1) at 0 h after the feeding, δ 13 C, 13 Camount, and 13 CPCT in sucrose from the leaves were the highest and positively correlated with net photosynthetic rate of leaves (p < 0.05); (2) at 24 h after the feeding, δ 13 C, 13 Camount, and 13 CPCT in sucrose from the carpopodium reached their peak values; (3) δ 13 C, 13 Camount, and 13 CPCT in sucrose from the peel were lower than those of hexose at 48 h after feeding in the fast-growing stage, but they all reached maximum levels in peel sucrose at 48 h after feeding in the oil conversion stage; and (4) the highest δ 13 C, 13 Camount, and 13 CPCT were recorded in all carbohydrates from the seed kernel 48 h after feeding, among which the highest δ 13 C, 13 Camount, and 13 CPCT were recorded in sucrose. These results suggested that sucrose was the main form of carbohydrate assimilation and transportation in walnut fruit, and large amounts of sucrose are accumulated in the peel and in the kernel, where it is also the base for the transformation of oil. Additional key words: 13 C isotope, carpopodium, fruit development, photosynthesis, seasonal changes","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42266518","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}
B. Lee, Minh Duy Pham, Hyunseung Hwang, I. Jang, C. Chun
To design a novel plug tray for ginseng seedling production, the effects of cell height and diameter, which determine root-zone volume, on growth and morphology of ginseng seedlings were investigated. Stratified seeds of the cultivar ‘Chunpoong’ were sown into containers with different cell heights (150, 200, 250, and 300 mm) with a diameter of 50 mm, denoted as H150, H200, H250, and H300, and different cell diameters (15, 20, 30, 50, and 75 mm) with a height of 200 mm, denoted as D15, D20, D30, D50, and D75, and filled with commercial growing media. Seedlings were then grown for 20 weeks in an ebb-and-flow subirrigation system installed in a plant factory with artificial light. Fresh and dry weights, length of roots, and leaf area increased as the cell height increased up to 300 mm. Length, fresh and dry weights of both shoots and roots, root diameter, and leaf area all increased as the cell diameter increased up to 30 mm. The root diameter was not significantly different between D30 and D75, though the roots had more space to expand. A further increase in cell height and diameter beyond H200 or D30 was not effective at increasing plant growth. The roots of ginseng seedlings were long and thick in the cells with a height of 200 mm and diameter of 30 mm. As a result, a novel plug tray was developed with a height and diameter of 200 mm and 30 mm, respectively, resulting in a root volume of 141.37 mL and planting density of 1,156 seedlings/m 2 (9 cm 2 /plants). Additional key words: cell diameter, cell height, ginseng seedling production, Panax ginseng, plug tray design
{"title":"Growth and Morphology of Ginseng Seedlings Cultivated in an Ebb-and-Flow Subirrigation System as Affected by Cell Dimension","authors":"B. Lee, Minh Duy Pham, Hyunseung Hwang, I. Jang, C. Chun","doi":"10.7235/HORT.20210020","DOIUrl":"https://doi.org/10.7235/HORT.20210020","url":null,"abstract":"To design a novel plug tray for ginseng seedling production, the effects of cell height and diameter, which determine root-zone volume, on growth and morphology of ginseng seedlings were investigated. Stratified seeds of the cultivar ‘Chunpoong’ were sown into containers with different cell heights (150, 200, 250, and 300 mm) with a diameter of 50 mm, denoted as H150, H200, H250, and H300, and different cell diameters (15, 20, 30, 50, and 75 mm) with a height of 200 mm, denoted as D15, D20, D30, D50, and D75, and filled with commercial growing media. Seedlings were then grown for 20 weeks in an ebb-and-flow subirrigation system installed in a plant factory with artificial light. Fresh and dry weights, length of roots, and leaf area increased as the cell height increased up to 300 mm. Length, fresh and dry weights of both shoots and roots, root diameter, and leaf area all increased as the cell diameter increased up to 30 mm. The root diameter was not significantly different between D30 and D75, though the roots had more space to expand. A further increase in cell height and diameter beyond H200 or D30 was not effective at increasing plant growth. The roots of ginseng seedlings were long and thick in the cells with a height of 200 mm and diameter of 30 mm. As a result, a novel plug tray was developed with a height and diameter of 200 mm and 30 mm, respectively, resulting in a root volume of 141.37 mL and planting density of 1,156 seedlings/m 2 (9 cm 2 /plants). Additional key words: cell diameter, cell height, ginseng seedling production, Panax ginseng, plug tray design","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42444350","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}
Byeong-Ho Choi, C. Kim, Young-ju Jeong, In-Hee Park, Su-Gon Han, T. Yoon
In this study, the resistance of the industry-standard M26 and M9 rootstocks and the promising elite G or CG rootstocks was evaluated not only for soil-borne diseases, such as Phytophthora root rot (Phytophthora cactorum), white root rot (Rosellinia necatrix), and southern blight (Athelia rolfsii), but also for woolly apple aphid [Eriosoma lanigerum (Huasm.)]. On February 27, 2019, each unworked rootstock plant was harvested from stool-beds, then planted in 2-L pots and grown in a greenhouse. For P. cactorum, M9 was the most resistant, and CG5087 and G935 were not. There was little difference in susceptibility to R. necatrix among rootstocks, but G or CG rootstocks were generally less susceptible than the M series. The susceptibility to A. rolfsii was higher (p < 0.05) in M series rootstocks than in G or CG series rootstocks, and the mortality reached 80% and 53% for M9 and M26, respectively, and 7% for G935. As a result, M9 and G11 showed resistance to P. cactorum, whereas G or CG rootstocks showed relative resistance to R. necatrix and A. rolfsii. For woolly apple aphid, G11, G202, G214, and CG5087 were immune, but G935, CG4814, M26, and M9 were not. Additional key words: colony, Geneva apple rootstock, mycelium, rootstock infection, soil infestation
{"title":"Resistance Evaluation of G, CG, or M Series Apple Rootstocks to Soil-borne Diseases (Phytophthora Root Rot, White Root Rot, and Southern Blight) and Woolly Apple Aphid","authors":"Byeong-Ho Choi, C. Kim, Young-ju Jeong, In-Hee Park, Su-Gon Han, T. Yoon","doi":"10.7235/HORT.20210015","DOIUrl":"https://doi.org/10.7235/HORT.20210015","url":null,"abstract":"In this study, the resistance of the industry-standard M26 and M9 rootstocks and the promising elite G or CG rootstocks was evaluated not only for soil-borne diseases, such as Phytophthora root rot (Phytophthora cactorum), white root rot (Rosellinia necatrix), and southern blight (Athelia rolfsii), but also for woolly apple aphid [Eriosoma lanigerum (Huasm.)]. On February 27, 2019, each unworked rootstock plant was harvested from stool-beds, then planted in 2-L pots and grown in a greenhouse. For P. cactorum, M9 was the most resistant, and CG5087 and G935 were not. There was little difference in susceptibility to R. necatrix among rootstocks, but G or CG rootstocks were generally less susceptible than the M series. The susceptibility to A. rolfsii was higher (p < 0.05) in M series rootstocks than in G or CG series rootstocks, and the mortality reached 80% and 53% for M9 and M26, respectively, and 7% for G935. As a result, M9 and G11 showed resistance to P. cactorum, whereas G or CG rootstocks showed relative resistance to R. necatrix and A. rolfsii. For woolly apple aphid, G11, G202, G214, and CG5087 were immune, but G935, CG4814, M26, and M9 were not. Additional key words: colony, Geneva apple rootstock, mycelium, rootstock infection, soil infestation","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45041661","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}
S. Yoon, Jeong man Kim, E. Choi, K. Choi, Kyung Lee Choi, K. Nam, S. Oh, J. Bae, Yong Beom Lee
This study aimed to select cucumber varieties adaptive to the UAE greenhouse climate by comparing LAVPD, water consumption, and growth performance of plants and fruits of different European cucumber varieties, including Gulfstream, Imea, Borja, and Dreamliner, in substrate hydroponic cultivation under hot and humid greenhouse conditions. The results showed that the total marketable fruit weight per plant was the highest in the Gulfstream variety during the extremely high temperature period, August, followed by Imea. During the entire growing period, the total marketable fruit weight was the highest in Imea, which was associated with the highest number of stem nodes. Water consumption for producing 200 g of fruit was lower in Gulfstream and Imea varieties. Thus, Gulfstream and Imea varieties could be recommended for production in the UAE greenhouse condition. Additional key words: humidity deficit, leaf temperature, leaf-air vapor pressure deficit, vapor pressure deficit, water use efficiency
{"title":"Comparison of Water Consumption and Plant Growth Characteristics in Different European Cucumber Varieties in Substrate Hydroponics","authors":"S. Yoon, Jeong man Kim, E. Choi, K. Choi, Kyung Lee Choi, K. Nam, S. Oh, J. Bae, Yong Beom Lee","doi":"10.7235/HORT.20210022","DOIUrl":"https://doi.org/10.7235/HORT.20210022","url":null,"abstract":"This study aimed to select cucumber varieties adaptive to the UAE greenhouse climate by comparing LAVPD, water consumption, and growth performance of plants and fruits of different European cucumber varieties, including Gulfstream, Imea, Borja, and Dreamliner, in substrate hydroponic cultivation under hot and humid greenhouse conditions. The results showed that the total marketable fruit weight per plant was the highest in the Gulfstream variety during the extremely high temperature period, August, followed by Imea. During the entire growing period, the total marketable fruit weight was the highest in Imea, which was associated with the highest number of stem nodes. Water consumption for producing 200 g of fruit was lower in Gulfstream and Imea varieties. Thus, Gulfstream and Imea varieties could be recommended for production in the UAE greenhouse condition. Additional key words: humidity deficit, leaf temperature, leaf-air vapor pressure deficit, vapor pressure deficit, water use efficiency","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48623697","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}
Jung-Sung Chung, S. Choi, Jae Ho Kim, S. Shim, M. Adnan, E. Chang, Y. Sohn, Yun-Hee Kim, Jin Gook Kim, Jeung Joo Lee
The proteome expressed in the peel and flesh of ‘Hongro’, a domestic breeding apple cultivar, was extracted and separated by two-dimensional electrophoresis. Most of the proteins were expressed at similar levels in the peel and flesh, but 30 protein spots showed a difference of more than two times higher in expression level in the peel and flesh. Of these, 25 were higher in the peel and 5 were higher in the flesh. By analyzing these proteins with MALDI-TOF/TOF, 18 of the protein spots that were higher in the peel were identified as proteins with their respective functions, and the remaining 7 were identified as having unknown function or were unidentified. In the case of the protein spots expressed higher in the flesh, two were identified as proteins having respective functions, and the other three were unidentified. Proteins more highly expressed in the peel were 1-aminocyclopropane1-carboxylate oxidase homolog (spot 21) related to the biosynthesis of ethylene; acetyl-CoA acetyltransferase (spot 148), cytosolic 1, acetyl-CoA acetyltransferase, cytosolic 1-like (spot 316) and 8-hydroxygeraniol dehydrogenase-like (spot 348) related to the biosynthesis of secondary metabolites; oxygen-evolving enhancer protein 1, chloroplastic (spot 210), and ribulose-1, 5-bisphosphate carboxylase/oxygenase large subunit (spot 273) related to the photosynthesis;
{"title":"Comparative Analysis of the Proteome in the Peel and Flesh of ‘Hongro’ Apples","authors":"Jung-Sung Chung, S. Choi, Jae Ho Kim, S. Shim, M. Adnan, E. Chang, Y. Sohn, Yun-Hee Kim, Jin Gook Kim, Jeung Joo Lee","doi":"10.7235/HORT.20210017","DOIUrl":"https://doi.org/10.7235/HORT.20210017","url":null,"abstract":"The proteome expressed in the peel and flesh of ‘Hongro’, a domestic breeding apple cultivar, was extracted and separated by two-dimensional electrophoresis. Most of the proteins were expressed at similar levels in the peel and flesh, but 30 protein spots showed a difference of more than two times higher in expression level in the peel and flesh. Of these, 25 were higher in the peel and 5 were higher in the flesh. By analyzing these proteins with MALDI-TOF/TOF, 18 of the protein spots that were higher in the peel were identified as proteins with their respective functions, and the remaining 7 were identified as having unknown function or were unidentified. In the case of the protein spots expressed higher in the flesh, two were identified as proteins having respective functions, and the other three were unidentified. Proteins more highly expressed in the peel were 1-aminocyclopropane1-carboxylate oxidase homolog (spot 21) related to the biosynthesis of ethylene; acetyl-CoA acetyltransferase (spot 148), cytosolic 1, acetyl-CoA acetyltransferase, cytosolic 1-like (spot 316) and 8-hydroxygeraniol dehydrogenase-like (spot 348) related to the biosynthesis of secondary metabolites; oxygen-evolving enhancer protein 1, chloroplastic (spot 210), and ribulose-1, 5-bisphosphate carboxylase/oxygenase large subunit (spot 273) related to the photosynthesis;","PeriodicalId":17858,"journal":{"name":"Korean Journal of Horticultural Science & Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42441154","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}
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