南方农业学报2012，Vol.43Issue(4)：407-412,6.DOI:10.3969/j:issn.2095-1191.2012.04.407
2009年自然低温下优质稻种质资源耐冷性初步鉴定评价
Preliminary identification and evaluation of high quality rice germplasm resources for cold tolerance under natural low temperatures during 2009
摘要
Abstract
[Objective]The germplasm with strong cold tolerance was screened out from the tested rice germplasm to provide materials for application in breeding of cold tolerant rice varieties. [ Method ]Under natural low temperature conditions of early spring and cold dew wind at late rice cropping, 458 high quality rice germplasm resources were preliminary analyzed and evaluated for cold tolerance during sprouting, seedling, and flowering stages, using early sowing-early planting and late sowing-late planting methods. [Resiilt]The germplasm number 21, 15 and 76, 5 and 80 showed very strong and strong cold tolerance at sprouting, seedling and flowering stage, which accounted for 4.59, 3.28 and 16.59, 1.48 and 23.74%, respectively. Cold tolerance of different germplasm at different growing stages was not entirely consistent , but the germplasm with strong cold tolerance at sprouting stage commonly showed stronger cold tolerance at seedling stage. Six specimens, viz., TKM10, Sanlicun, Xiangwanxian 13, Hui 968xuan, 649/Wudadaozhong//649///649 and 253/ P117//253///253 were screened out, which showed strong or very strong cold tolerance at several growing stages under natural low temperature. [Conclusion]The high quality rice germplasm materials, with strong or weak cold tolerance, were distinguished under natural low temperature conditions. The germplasm with strong or very strong cold tolerance has fairly good application value. Six screened germplasm materials with strong or very strong cold tolerance at several growing stages under natural low temperature can be used as parent materials in research and breeding of cold tolerant rice varieties.关键词
优质稻/种质资源/自然低温/耐冷性/鉴定评价Key words
high quality rice/ germplasm resources/ natural low temperature/ cold tolerance/ identification and evaluation分类
农业科技引用本文复制引用
刘广林,陈传华,罗群昌,陈远孟,蒋显斌..2009年自然低温下优质稻种质资源耐冷性初步鉴定评价[J].南方农业学报,2012,43(4):407-412,6.基金项目
国家水稻产业技术体系广西创新团队专项项目(nycytxgxcxtd-01) （nycytxgxcxtd-01）
广西自然科学基金项目(2011GXNSFB018043) （2011GXNSFB018043）
广西农业科学院基本科研业务专项项目[200922(基)] （基）
广西农业科学院科技发展基金项目(桂农科2011JM01) （桂农科2011JM01）
