云南省适宜与玉米间作大豆品种的筛选与鉴定

Screening and Identification of Soybean Varieties Suitable for Intercropping with Maize in Yunnan Province

为了筛选和鉴定适宜云南省与玉米间作的大豆品种,本研究在玉米与大豆间作条件下,采用灰色关联度和系统聚类分析方法对44个大豆品种(系)的10个农艺及产量性状进行综合分析及评价。结果表明:参试品种各性状的变异系数的变异范围为7.3%~51.2%,说明各地大豆资源的表型多样性比较丰富。灰色关联分析表明影响间作大豆产量的性状依次为单株粒数、主茎节数、百粒重、单株荚数、分枝数、倒伏性、株高、节间长度、每荚粒数。利用系统聚类法将44个大豆品种分为了3大类,各类群性状之间的差异较明显,其中单株荚多、单株粒多、分枝多、百粒重适中的第一类是比较适宜与玉米间作的大豆品种(系)。

In order to screen and identify of soybean varieties suitable for intercropping with maize in Yunnan province, this study used the grey relational degree and system cluster analysis method, ten agronomic and yield characters of 44 soybean varieties （lines） conducted a comprehensive analysis and evaluation under the conditions of corn and soybean intercropping. The results showed that the coefficient of variation in phenotypic traits was between 7. 3% - 51.2%, which illustrated that the germplasm from around had a relatively rich morphological diversity. Using grey correlation degree analysis indicated the order of main characters which influenced the yield of intercropping soybean as follows ： seeds per plan, Number of nodes on main stem, 100-seed weight, Pods per plant, number of branches, lodging resistance, plant height, Internode length, and seeds per pod. By the system cluster analysis of 44 soybean varieties was classified into three clusters. More pods per plant, more seeds per plant, more branch and moderate 100-seed weight of the first class were suitable for intercropping with corn in Yunnan province.