文档介绍：水稻金优38产量构成因子分析
摘要:对水稻(oryza sativa l.)金优38产量及其构成因子进行了分析,结果表明,变异系数由大到小依次为每穗实粒数、有效穗数、结实率、产量、穗长、千粒重;千粒重、每穗实粒数和有效穗数与产量的相关性均达显著水平;3个主导因子千粒重、每穗实粒数、 5、 7、 6。综合各分析结果,在金优38栽培过程中应主攻每穗实粒数和有效穗数,以达到增产的目的。
关键词:水稻(oryza sativa l.);金优38;产量构成因子;分析
中图分类号:s511 文献标识码:a 文章编号:0439-8114(2012)23-5267-02
analysis on yield contributing factors of rice cultivar jingyou 38
sun wei, xu li-rong
(huanggang academy of agricultural sciences, huanggang 438000, hubei, china)
abstract: the yield and yield contributing factors of rice(oryza sativa l.) “jinyou38” was analyzed. the results showed that the variation coefficient ranked as spikelet number per panicle > effective panicle > seed setting rate >yield> ear length > 1 000-grain weight. 1 000-grain weight, spikelet number per panicle and effective panicle were significantly correlated to yield at level. the result of path analysis of the most important factors showed that direct path coefficients of 1 000-grain weight, spikelet number per panicle, effective panicles to crop yield was 5, 7 and 6 respectively. in conclusion, spikelet number per panicle and effective panicle should be focused to increase the yield of jinyou 38.
key words:rice(oryza sativa l.); jinyou38; ponents; analysis
水稻(oryza sativa l.)金优38是湖北省黄冈市农业科学院选育的高产水稻新品种,2002~2003年参加湖北省晚稻区试,2004年通过了湖北省农作物品种审定委员会的审定,2006~2007年参加国家区试,2008年