Abstract:

In order to effectively make use of tea germplasm resources and screen tea parent materials for high resistance breeding. The cold tolerance and resistance to pest of 105 accessions of tea germplasms collected from Yunnan province were investigated and evaluated by field testing, leaf low temperature treatment experiment during 2006-2008. As a result, 11 well-performed tea germplasm materials were screened out, among which ‘86-8-1’, ‘86-9-12’, ‘86-12-7’, ‘86-6-9’, ‘Hetoubaijiancha’ and ‘Longdaoyecha’ with strong cold tolerance germplasms, ‘Maanshandayecha’, ‘Changxuan 2’ and ‘Zhongye 2’ with high resistant to tea leafhopper, ‘84-1-1’ and ‘Manpenlongdayecha’ with high resistant to root knot nematode, and ‘Jinuodayecha’ and ‘Yakouxiaocha’ with high resistant to tea red spider mite were selected. The authors believed that all of those out-screened resources can be utilized not only for generalization but also for further individual selection scheme, cross breeding materials and mutation induction materials. This would provide a good material and technical basis for promoting the selection for new tea improved cultivars.