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Yoonah Jang,Youngyeol Cho,Hancheol Rhee,Yeongcheol Um 한국원예학회 2008 Horticulture, Environment, and Biotechnology Vol.49 No.2
The objective of this study was to investigate the effects of rootstock and night temperature on the growth and yield of grafted pepper (Capsicum annuum L.) in greenhouse. Four commercial pepper varieties, six commercial rootstocks, four breeding lines, and one eggplant rootstock were grown at three levels of night temperature (NT) (10, 15, and 20℃). At 10℃NT, the total dry weight was the greatest in 'Kataguruma' followed by 'Koregon PR-380' and 'PR-Power'. The dry weight of root at 10℃ NT was also the greatest in 'Kataguruma' followed by 'PR-Power'. RGRs of genotypes varied among the10, 15, and 20℃ NTs. They could be categorized into three types according to the response to NT. The RGRs of genotypes that belonged to type Ⅰ were reduced approximately 0.01 to 0.03 g·g<SUP>-1</SUP>·day<SUP>-1</SUP> as NT decreased. In type Ⅱ, they were similar between 15 and 20℃NT but rapidly decreased under 10℃NT, whereas they were stable irrespective of NT in type Ⅲ. 'Kataguruma' and 'Koregon PR-380' in type Ⅲ showed higher RGRs than other genotypes except 'Taibyo VF'. Cultivar 'Nokkwang' as scions was grafted onto rootstocks 'Kataguruma', 'Koregon PR-380', 'PR-power', and 'Tantan' selected from 14 genotypes. All growth parameters were greater in non-grafted seedlings. Among the grafted seedlings, the growth of peppers grafted onto 'Kataguruma' was better. The leaf area and dry weight of leaves were the smallest in the pepper seedlings grafted onto 'Koregon PR-380'. When these grafted peppers were cultivated at different NT conditions (8, 13, and 20℃) in greenhouse, low NT decreased the growth and yield of peppers. The growth and yield of grafted peppers were greater than those of non-grafted peppers irrespective of temperature. However, rootstocks with tolerance to low temperature didn't significantly improve the growth and productivity under low temperature condition, though the grafting did. Finally, we couldn't screen out any strong rootstock at low temperature condition for the better growth and productivity of pepper.
Jang, Yoonah,Huh, Yun-Chan,Park, Dong-Kum,Mun, Boheum,Lee, Sanggyu,Um, Yeongcheol Korean Society of Horticultural Science 2014 원예과학기술지 Vol.32 No.5
Melons (Cucumis melo L.) are generally grafted onto Cucurbita rootstocks to manage soilborne pathogens such as Monosporascus root rot and v ine decline (MRR/VD) and Fusarium wilt. However, g rafting onto Cucurbita rootstocks reportedly results in the reduction of fruit quality. In this study, the resistance to MRR/VD, yield, and fruit quality of melons grafted onto melon rootstocks were evaluated under greenhouse conditions. Eight melon rootstocks (R1 to R8) were used and the inodorus melon 'Homerunstar' was used as scion. Melon rootstocks R1 to R6 were selected based on resistance to MRR/VD under greenhouse conditions. Non-grafted 'Homerunstar' and plants grafted onto squash interspecific hybrid 'Shintozwa' rootstock (Cucurbita maxima D. ${\times}$ C. moschata D.) served as controls. Grafted melons were cultivated in the greenhouse infested with Monosporascus cannonballus during two growing seasons (summer and autumn). The responses to MRR/VD, yield, and fruit quality differed depending on the rootstocks and growing season. The melons grafted onto 'Shintozwa' exhibited less severe disease symptoms and higher survival rates than non-grafted melons in both seasons. While the melon rootstocks in the summer cultivation did not increase the survival rate compared to non-grafted melons, the melon rootstocks R1 and R2 in the autumn cultivation led to higher survival rates. The melon rootstocks resistant to MRR/VD increased the percentage of marketable fruits and marketable yields. Grafting onto the melon rootstocks caused little or no reduction of fruit quality such as low calcium content, fruit softening, and vitrescence, especially in lower-temperature autumn season. Accordingly, these results suggest that grafting onto the melon rootstocks may increase the tolerance to MRR/VD and the marketable yield without a reduction of fruit quality.
Yoonah Jang,Yun-Chan Huh,Dong-Kum Park,Boheum Mun,Sanggyu Lee,Yeongcheol Um 한국원예학회 2014 원예과학기술지 Vol.32 No.5
Melons (Cucumis melo L.) are generally grafted onto Cucurbita rootstocks to manage soilborne pathogens such as Monosporascus root rot and v ine decline (MRR/VD ) and Fusarium wilt. However, g rafting onto Cucurbita rootstocks reportedly results in the reduction of fruit quality. In this study, the resistance to MRR/VD, yield, and fruit quality of melons grafted onto melon rootstocks were evaluated under greenhouse conditions. Eight melon rootstocks (R1 to R8) were used and the inodorus melon ‘Homerunstar’ was used as scion. Melon rootstocks R1 to R6 were selected based on resistance to MRR/VD under greenhouse conditions. Non-grafted ‘Homerunstar’ and plants grafted onto squash interspecific hybrid ‘Shintozwa’ rootstock (Cucurbita maxima D. × C. moschata D.) served as controls. Grafted melons were cultivated in the greenhouse infested with Monosporascus cannonballus during two growing seasons (summer and autumn). The responses to MRR/VD, yield, and fruit quality differed depending on the rootstocks and growing season. The melons grafted onto ‘Shintozwa’ exhibited less severe disease symptoms and higher survival rates than non-grafted melons in both seasons. While the melon rootstocks in the summer cultivation did not increase the survival rate compared to non-grafted melons, the melon rootstocks R1 and R2 in the autumn cultivation led to higher survival rates. The melon rootstocks resistant to MRR/VD increased the percentage of marketable fruits and marketable yields. Grafting onto the melon rootstocks caused little or no reduction of fruit quality such as low calcium content, fruit softening, and vitrescence, especially in lower-temperature autumn season. Accordingly, these results suggest that grafting onto the melon rootstocks may increase the tolerance to MRR/VD and the marketable yield without a reduction of fruit quality.