Cluster and Berry Characteristics of Grapevine (Vitis vinifera L.) as Influenced by Thinning Agents and Gibberrelic Acid Applications
- سال انتشار: 1399
- محل انتشار: مجله بین المللی علوم و فنون باغبانی، دوره: 7، شماره: 4
- کد COI اختصاصی: JR_IJHST-7-4_007
- زبان مقاله: انگلیسی
- تعداد مشاهده: 120
نویسندگان
Hesamaddin Afshari-Jafarbigloo
Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
Department of Horticulture Faculty of Agriculture Shiraz University Shiraz, Iran
Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
چکیده
Some cultivars of grapevine have very compact cluster which adversely affect its quality and marketability. ‘Yaghouti’ is a commercial early table grape cultivar that has very compact clusters. The present study was conducted to assess the effects of mechanical and chemical thinning as well as GA۳ application on cluster morphology and berry size of grapevine cv. ‘Yaghouti’. Treatments were chemical thinning agents including: NAA (۷.۵ and ۱۵ mg/L), Ethephon (۷۵ and ۱۵۰ mg/L), Sevin (۷۵۰ and ۱۵۰۰ mg/L) and mechanical thinning by a comb (comb thinning), applied a week after fruit set and unthinned clusters as control with ۳ replications, ۱۰ days after thinning, clusters were immersed in GA۳ solution at ۶۰ mg/L. Results indicated that berry numbers were reduced in all thinning treatments. Length, width and weight of berries increased significantly when treated with hand or chemical thinning. GA۳ alone and Sevin at ۷۵۰ mg/L in combination with GA۳ treatment improved yield and the quality of berries. Total phenolics compounds, TSS and berries colour were improved in all thinning treatments. In general, application of Sevin at ۷۵۰ mg/L combined with GA۳ and hand thinning along with GA۳ are proposed to improve quality of grapevine berries.کلیدواژه ها
Ethephon, comb thinning, Sevin, compact bunchاطلاعات بیشتر در مورد COI
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