摘要
[目的]为明确早籼产量与产量性状的相互关系,找出影响早籼产量的主导因素,为早籼优良品种的选育及栽培提供科学依据。[方法]以2011年南方稻区早籼区域试验13个水稻品种(组合)为材料,运用灰色系统理论对影响水稻产量的8个产量性状进行灰色关联分析。[结果]早籼产量性状与产量的关联度大小依次为:全生育期(r=0.516 7)>结实率(r=0.485 1)>穗长(r=0.474 1)>千粒重(r=0.427 2)>实粒数(r=0.402 1)>株高(r=0.382 4)>总粒数(r=0.359 4)>有效穗数(r=0.311 0)。[结论]在进行早籼选育和高产栽培过程中,要抓住结实率这个指标,在保证穗长和千粒重前提下,提高每穗实粒数。
[Objective] To define the relationship between yield and yield characters of early indica rice,figure out dominant factors influencing yield of early indica rice,and offer scientific support for the breeding and cultivation of quality early indica rice varieties.[Method] Taking 13 rice varieties or combinations in the early indica rice pilot experiment from south rice producing regions in 2011 as the test materials,Gray System Theory is applied for the gray correlation analysis of 8 characters of rice yield.[Result] The correlation between early indica rice yield characters and yield is：whole growth season （r =0.516 7） ＞ maturing rate （r =0.485 1） ＞ spike length （r =0.474 1） ＞ thousand-kernel weight （r =0.427 2） ＞ full kernel quantity （r =0.402 1） ＞ plant height（r =0.382 4） ＞total kernel quantity （r =0.359 4） ＞ efficient spike （r =O.311 0）.[Conclusion] In the breeding and high-yield cultivation of early indica rice,maturing rate should be valued,full kernel quantity per spike should be improved on the basis of guaranteeing spike length and thousand-kernel weight.
出处
《安徽农业科学》
CAS
2014年第11期3218-3220,共3页
Journal of Anhui Agricultural Sciences
基金
湖北省农业科技创新中心科技专项(2007-620-001-03)
关键词
早籼
产量性状
关联度分析
Early indica rice
Yield character
Correlation analysis
