利用茶树品种多样性控制茶芽枯病的研究_张泽岑.pdf

DOI:10.13305/j.cnki.jts.2006.04.004 2006 26 4253~258 Journal of Tea Science 625014 6 3 10 RAPD 10 2 3 110 89.43% 28.5%~73.77% RAPD S435.711 A 1000-369X200604-253-06 The Use of Diversity of Tea Cultivars for Bud Blight Control ZHANG Ze-cen WANG Xue-ping (College of Forestry and Horticulture, Sichuan Agricultural University; Ya’an 625014, China) Abstract: Field experiments of mixed and single-cultivar-planting of 6 susceptible cultivars and 3 tea bud blight-resistant cultivars, and the genetic diversity, and the relationship of 10 tea cultivars were investigated by RAPD. The results demonstrated that 10 tested tea cultivars can be classified into 2 complex groups and 3 simple groups, a total of 110 polymorphic DNA bands were amplified (89.43%). The disease incidence infected leaf-area percentage disease index and infected leaf area in the mixed planting plots were significantly lower than those in the single-cultivar-planting plots. The susceptible cultivars showed significant greater decreasing range the control efficiency gained 28.54%~73.77%. It suggests that inter-planting of tea cultivars with different genetic background and morphological characteristic is an effective approach for tea bud blight control. Keywords: tea, tea bud blight, cultivar, diversity, mixed-planting, single-cultivar-planting, RAPD [2]