生态环境学报2009，Vol.18Issue(5)：1887-1892,6.
不同生态下云南稻核心种质孕穗期耐冷性状的表型多样性差异
Difference of phenotypic diversity of cold tolerance traits at the booting stage for core collection of rice landrace in different ecologies in Yunnan, China
摘要
Abstract
Phenotypic diversity of cold tolerance traits at the booting stage were evaluated under natural low temperature(18 ℃, cold damage) and normal temperature(27 ℃) with 504 accessions core collection of rice landrace in Yunnan. The results showed that: (1) In three environments, mean value, standard deviation and coefficient of variation etc. Parameters of 11 cold tolerant traits for core collection from Yunnan were different. The entire difference trend of three characteristics in indica was more obvious than that of japonica, and that weak cold tolerance lines was more obvious than high cold tolerance lines under different environments. (2)The shannon-weaver'information index of 11 cold tolerant traits under different environment reached significant difference, which nomal environment was higher than cold damage, Japonica was higher than Indica, strong cold tolerant lines was higher than weak cold tolerant lines. These differences were attributed to flag leaf length, peduncle length, node length under panicle, first to second node length, panicle length, filled grain number of main panicle and seed setting rate.关键词
水稻(OryzasativaL.)/核心种质/生态差异/耐冷性状/表型多样性Key words
rice (Oryza sativa L.)/ core collection/ ecological difference/ cold tolerant traits/ phenotypic diversity分类
农业科技引用本文复制引用
杨树明,曾亚文,杜娟,普晓英,邰丽梅,杨涛..不同生态下云南稻核心种质孕穗期耐冷性状的表型多样性差异[J].生态环境学报,2009,18(5):1887-1892,6.基金项目
国家自然科学基金项目(30160043和30571140) （30160043和30571140）
云南省"人才培引"项目(2005PY01-14) （2005PY01-14）
