摘要
为了探明黔中地区杂交水稻产量与构成因素的关系,给水稻高产栽培提供参考,于2007—2008年在黔中地区通过田间试验对42个水稻品种(组合)的产量及其构成因素进行相关和通径分析。结果表明:1)产量与构成因素的相关系数绝对值大小顺序,2007年为千粒重>结实率>有效穗>穗粒数,且穗粒数与产量成负相关;2008年为结实率>穗粒数>有效穗>千粒重,且千粒重与产量成负相关。2)水稻产量与构成因素的通径系数,2007年以有效穗对产量的直接贡献最大,通径系数为0.889 8,其他因素依次为千粒重>穗粒数>结实率;2008年为有效穗>穗粒数>结实率>千粒重。
The correlation and path analysis of yield and yield components of 42 rice varieties （combinations） were conducted in the central part of Guizhou Province during 2007--2008 through a field experiment to explore the relationship between yield and yield components and provide a reference for high- yield rice cultivation. Results： 1） The absolute values of the correlation coefficients of yield and yield components showed a trend of thousand seed weight setting percentage number of productive ear kernels per spike, and kernels per spike was negatively correlated with yield in 2007; while in 2008 the trend was setting percentagekernels per spikenumber of productive ear〉thousand seed weight, and thousand seed weight was negatively correlated with yield. 2） The number of productive ear contributed the most to yield directly, and the path coefficient was 0. 8898, the other factors were thousand seed weightkernels per spikesetting percentage in 2007; And the sequence was number of productive ear kernels per spikesetting percentagethousand seed weight in 2008.
出处
《贵州农业科学》
CAS
北大核心
2013年第3期16-18,22,共4页
Guizhou Agricultural Sciences
基金
贵州省科技重大专项"贵州粮食(水稻
玉米)高产科技‘双百’示范工程"[黔科合N字(2011)6012]
贵州省农业攻关项目"不同类型杂交稻超高产生理特性研究"[黔科合N字(2009)3014]
贵州省创新能力建设项目"贵州省水稻育种
栽培与产业化创新能力建设"[黔科合院所创能合(2011)4003]
贵州山区水稻科研基础条件建设项目[黔科条中补地(2011)4005]
关键词
水稻
产量
构成因素
相关分析
黔中地区
贵州
rice
yield
yield component
correlation analysis
central part of Guizhou ProvinceGuizhou
