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http://dx.doi.org/10.5338/KJEA.2015.34.4.44

Regrowth of Axillary Buds the Current Season and Early Growth and Development the Following Year in Fruiting Young Kiwifruit as Affected by Early Defoliation  

Kwack, Yong-Bum (Namhae Sub-Station, National Institute of Horticultural & Herbal Science)
Kang, Seong-Mo (Department of Horticulture, College of Agriculture and Life Sciences, Gyeongsang National University)
Kim, Hong Lim (Namhae Sub-Station, National Institute of Horticultural & Herbal Science)
Kim, Mok-Jong (Namhae Sub-Station, National Institute of Horticultural & Herbal Science)
Kim, Seong-Cheol (Namhae Sub-Station, National Institute of Horticultural & Herbal Science)
Lee, Yong-Bok (Research Institute of Life Science, Gyeongsang National University)
Publication Information
Korean Journal of Environmental Agriculture / v.34, no.4, 2015 , pp. 288-293 More about this Journal
Abstract
BACKGROUND: This study was conducted to investigate the effect of the unexpected early loss of leaves on a newly-bred kiwifruit on the regrowth of axillary buds the current season and the early growth and development the following year.METHODS AND RESULTS: The vines were defoliated on Jul. 18, Aug. 16, and Sep. 17 in 2012 and on Jul. 16, Aug. 13, and Sep. 12 in 2013. The vines were defoliated 0 (control), 50, and 100% of the total number of leaves on a vine. The regrowth of axillary buds at 30 days after defoliation increased in proportion to defoliation degrees regardless of the defoliated time. Defoliation the previous season did not influence percent budbreak the next season. Percentage of floral shoots of the control vines was 27.4%, each bearing 2-3 flowers. In those vines defoliated 100% in August and September, however, percent floral shoots and number of flowers significantly reduced.CONCLUSION(S): Defoliation in July, August, and September didnot affect percent budbreak the following year regardless of degrees of defoliation. A 100% defoliation in August and September significantly reduced flowering the following year compared to the control; that in August resulted in no floral buds at all.
Keywords
Budbreak; Defoliation; Floral shoot; Kiwifruit;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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