四川大豆品种资源的因子分析  

FACTORIAL ANALYSIS OF SOYBEAN VARIETIES IN SICHUAN

作　　者：徐正华[1] 何丽玫 杨安贵[1] 杜春光[1] 

机构地区：[1]西南农业大学农学系,重庆630716

出　　处：《西南农业大学学报（自然科学版）》1993年第4期299-302,共4页Journal of Southwest Agricultural University

摘　　要：对68个大豆品种因子分析表明,11个农艺性状可分为受3个主因子控制的性状群.即因子1为生育日数及荚数因子;因子2为生产力因子;因子3为株型结构因子.其中,主因子1作用最大,说明四川大豆育种工作应以生育期、单株粒数和单株荚数3个性状的选择为主,粒重选择为辅.68个品种可归纳咸3类:第Ⅰ类以育成品种为主,多为人粒型;第Ⅱ类为川东以外的地方品种,为多荚多粒型;第Ⅲ类为少荚小粒型.第Ⅰ、Ⅱ类品种均可作为优良亲本在育种中加以利用。Factorial analysis of 68 Soybean varieties showed that the 11 agronomic traits studied might be divided into three groups controlled by three principal factors.The first factor involres growth duration and pod number,the second factor refers to the productivity fac- tor,and the third factor is associated with plant type and structure.The first factor makes the greatest contribution to yield,suggesting that growth duration,seed number per plant and pod number per plant should be taken as the traits of primary consideration in soybean breeding in Sichuan province with seed size as of secondary importance.The 68 varieties wer grouped into three kinds.The first one is characterized by large kernel size.Most of the varieties are released cultivars.The second one is characterized by multi-pod and kernel.It is made up mostly of the local varieties with the exception of eastern Sichuan.The other va- rieties constitute the third group characterized ny fewer pods and kernels.varieties of the first two groups may be employed as parents in breeding programmes.

关 键 词：大豆 品种资源 因子分析 

分 类 号：S565.103.2[农业科学—作物学]