Analysis of the Correlation between Seed-setting Characters and Seed Investigation Time in Rice  

水稻结实性状与考种时间的关联研究（英文）

作　　者：宋忠华 张艳贵 宁金花 

机构地区：[1]湖南省长沙农业气象试验站,湖南长沙410125 [2]气象防灾减灾湖南省重点实验室,湖南长沙410118

出　　处：《Agricultural Science & Technology》2015年第11期2446-2450,共5页农业科学与技术（英文版）

基　　金：Supported by Project of China Meteorological Administration(2010154);Special Fund for Meteorological Research in the Public Interest(GYHY201206020,GYHY201006025)~~

摘　　要：With super hybrid rice cultivar Y Liangyou 1 as the experimental material, seed-setting rate, abortive grain rate, empty grain rate and 1 000-seed weight were investigated for continuous 10 days since the first day post-harvest to reveal the correlation between differences in seed-setting characters of rice and seed investiga- tion time. The results indicated that seed-setting rate, abortive grain rate, empty grain rate and 1 000-seed weight varied at different seed investigation time. With the postponement of seed investigation, seed-setting rate and 1 000-seed weight showed downward trends, abortive grain rate showed an upward trend, while empty grain rate exhibited a significant correlation with seed investigation time. Seed-setting rate, abortive grain rate and 1 000-seed weight exhibited no significant differences within the first three days after the harvest; since day 4, seed-setting rate and 1000-seed weight declined remarkably, while abortive grain rate increased signifi- cantly. Based on the correlation between seed-setting characters of rice and seed investigation time, the analysis of seed-setting characters of rice and other cereal crops should be completed within the first three days after the harvest, thereby im- proving the accuracy of relative conclusion.以水稻为研究对象,对同1天收割的成熟水稻,从收割后第1天开始,每天取样考种,分析考查结实率、秕谷率、空壳率、千粒重等结实性状,连续考种10 d,研究不同考种时间所引起的结实性状的差异及其与考种时间的关系。结果表明,随着考种时间的推后,结实率呈下降趋势,秕谷率呈上升趋势,千粒重呈降低趋势,空壳率与考种时间的相关性不明显;收割后3 d内考种,结实率、秕谷率、千粒重差异不显著,从第4天开始,结实率显著下降,秕谷率显著增加,千粒重下降明显。基于水稻结实性状与考种时间的关系,建议水稻等禾谷类作物的结实性状分析,在收割后3 d内完成,避免因此引起的差异导致相关分析结论的偏差。

关 键 词：Investigation time Seed-setting characters CORRELATION RICE 

分 类 号：S511[农业科学—作物学]