北方夏大豆品种高产基因型特征分析  

ANALYSIS OF THE HIGH-YIELD GENOTYPE FEATURES IN SVMMER SOYBEAN

作　　者：吴建军[1] 郝欣先[1] 蒋惠兰[1] 高建韦 

机构地区：[1]山东省农科院作物研究所

出　　处：《大豆科学》1995年第1期1-6,共6页Soybean Science

基　　金：山东省自然科学基金

摘　　要：应用通径分析结合多元统计方法，研究了一般产量和较高产量两组品种（系）群体的高产基因型的基本性状。结果表明：高产基因型性状特征随群体产量水平不同而异。对于中低产大豆品种（系）群体主要特征是：单株结荚数多，茎重大、植株高、分枝多，这些性状与株粒重的优化回归方程为：产量＝－１６．８７５＋０．８０株荚数＋０．６１株茎重＋０．４１４高＋０．２４分枝，四性状对株粒重的总决定系数为９０．４９；对于高产大豆品种（系）群体，主要性状特征是粒茎比值大、百粒重较高、主茎节数较多、株结荚多，回归方程为：产量＝－１．４８４＋１０．９７４粒茎比＋０．８６９百粒重＋０．０４７株荚数＋（－０．２２）主茎节数，总决定系数为８８．０３％，其中以粒茎比值大是最为突出的高产基因型特征性状．Abstract Using path coefficient and nlultivariate analysis the high-yield genotype features inCommon and high yield summer soybean cultivavs were studied. The results showed that:incommon yield collection pods number per plant, weight of stem per plant, plant height andbranch number per plant were corelated significantly positive with seeds yield per plant; inhigh yield collection the high-yield genotype compunent were the ratio of seeds to stem ; 100seeds weight, pods number per plant and nodes number of main stem per plant. The outstanding feature was that the ratio of seeds in stem become the most important character forhisht yield.

关 键 词：夏大豆 高产基因型性状 通径分析 逐步回归 

分 类 号：S565.103.2[农业科学—作物学]