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Journal of Tea Science ›› 2006, Vol. 26 ›› Issue (4): 253-258.doi: 10.13305/j.cnki.jts.2006.04.004

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The Use of Diversity of Tea Cultivars for Bud Blight Control

ZHANG Ze-cen WANG Xue-ping   

  1. College of Forestry and Horticulture, Sichuan Agricultural University; Ya’an 625014, China;
  • Received:2006-06-27 Revised:2006-09-14 Online:2006-12-25 Published:2019-09-11

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.

Key words: tea, tea bud blight, cultivar, diversity, mixed-planting, single-cultivar-planting, RAPD

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