西藏春小麦区试拉萨点产量构成因素变异分析  

Variation Analysis of Yield Components of Spring Wheat Regional Trial in Lhasa,Tibet

作　　者：王兰[1] 张永鹏 梁艳华[1] 范瑞英[1] 王菊花[1] 魏迎春[1] WANG Lan;ZHANG Yong-peng;LIANG Yan-hua;FAN Rui-ying;WANG Ju-hua;WEI Ying-chun(Institute of Agriculture,Tibet Academy of Agricultural and Animal Husbandry Sciences,Tibet Lhasa 850032,China)

机构地区：[1]西藏自治区农牧科学院农业研究所,西藏拉萨850032

出　　处：《西藏农业科技》2020年第4期65-67,共3页Tibet Journal of Agricultural Sciences

基　　金：西藏自治区科技厅农作物育种专项(2019年)。

摘　　要：利用西藏2016-2019年春小麦区试拉萨试验点的12个品种(系),对产量构成三因素及产量进行变异性分析、相关分析和通径分析,探讨春小麦产量三因素对产量的影响。变异性分析表明,成穗数>穗粒数>千粒重;相关分析表明,成穗数、千粒重与产量呈正相关,穗粒数与产量呈负相关;通径分析表明,成穗数、穗粒数和千粒重对产量的直接作用均为正值。因此,在今后的春小麦选育应侧重于增加单位面积成穗数,适当减低穗粒数,稳定千粒重,从而使产量达到高水平。Using 12 spring wheat regional trial varieties(lines)from 2016 to 2019 in Lhasa,the variabilities,correlation and path analysis of yield components and yield were carried out to explore the effect of the three factors on yield of spring wheat.The results of variability analysis showed the number of panicles>the number of grains per Spike>1000-grain weight;The correlation analysis showed that the number of panicles and 1000-grain weight were positively correlated with yield,while the number of grains per spike was negatively correlated with yield;The direct effects of the number of panicles,the number of grains per spike and 1000-grain weight on yield were all positive.Therefore,in future spring wheat breeding should focus on increasing the number of panicles per unit area,appropriately reducing the number of grains per spike,and stabilizing the 1000-grain weight,so as to achieve high yield.

关 键 词：春小麦 产量因素 变异分析 

分 类 号：S432.21[农业科学—植物病理学]