2个水稻三系不育系开花习性和农艺性状的观察与研究  

Observation and Analysis of Flowering Habits and Agronomic Characters of 2 Rice CMS Lines

作　　者：田芳慧 胡秀明[1] 王书玉[1] 孙建权[1] 殷春渊[1] 王和乐[1] 马朝阳[1] 刘璐瑶 刘贺梅[1] 邵性宽 胡胜利[1] 王东海[1] 杨京华 李慧 胡源 李勋 TIAN Fang-hui;HU Xiu-ming;WANG Shu-yu(Xinxiang Academy of Agricultural Sciences in Henan Province,Xinxiang,Henan 453002)

机构地区：[1]河南省新乡市农业科学院,河南新乡453002 [2]河南师范大学附属中学,河南新乡453002 [3]河南省原阳县农业科学研究所,河南原阳453000

出　　处：《安徽农业科学》2020年第2期59-62,共4页Journal of Anhui Agricultural Sciences

基　　金：河南省重大科技专项子课题“粳稻新品种选育”(14110011060);河南省现代农业产业技术体系项目(S2012-04-G01)

摘　　要：为探明2个稳定三系不育系的特征特性,对其开花习性和部分农艺性状进行调查分析,并研究温、湿度对水稻日开花量的影响。结果表明:所观察的2个不育系花期较集中,开花高峰期都在12:00—13:00不育系新稻97200A开花历时9 d,开花第4天达到盛花期;新稻03G43A开花历时11 d,开花第5天达到盛花期;开花时的温度和相对湿度适宜,有利于促进开花。农艺性状相关分析表明,株高与穗长显著正相关,与单株颖花数显著负相关,相关系数分别为0.955、-0.271;有效分蘖数与单株颖花数极显著正相关,相关系数分别为0.914;穗长与剑叶长和单穗颖花数极显著正相关,相关系数分别为0.379、0.560;剑叶长与单穗颖花数极显著正相关,相关系数为0.397;单穗颖花数与单数颖花数极显著正相关,相关系数为0.347。In order to explore the characteristics of 2 rice CMS lines,we investigated and analyzed the flowering habits,growth duration and main agronomic characters.And the effects of temperature and relative humidity on the daily flowering amount of rice were studied.The results showed that the flowering period of 2 rice CMS lines was relatively concentrated,and the daily peak bloom occurred between 12:00 and 13:00.The flowering duration of Xindao 97200A was 9 d and reached its flowering stage on the fourth day;the flowering of Xindao 03G43A lasted 11 d and reached its flowering stage on the 5th day.Suitable temperature and relative humidity at the time of flowering could promote flowering.The correlation analysis of agronomic traits showed that plant height was significantly positively correlated with spike length,and significantly negatively correlated with spikelets per plant,and the correlation coefficients were 0.955 and-0.271,respectively.There was a significant positive correlation between the number of effective tillers and the number of spikelets per plant,and the correlation coefficient was 0.914.Spike length was significantly positively correlated with flag leaf length and spikelet number per ear,and correlation coefficients of 0.379 and 0.560,respectively.There was significant positive correlation between flag leaf length and spikelet number per ear,and the correlation coefficient was 0.397.The number of spikelets per ear and the number of spikelets per plant were significantly positively correlated,with the correlation coefficient of 0.347.

关 键 词：水稻不育系 开花习性 农艺性状 温度 湿度 

分 类 号：S5[农业科学—作物学]