乌塌菜主要农艺性状相关及通径分析

选用17个安徽乌塌菜地方品种,对7个农艺性状进行了相关分析、通径分析和回归分析.相关分析的结果表明,单株产量与叶片宽、叶柄厚、叶柄长及叶片长具极显著或显著正相关,相关系数依次为0.6674**、0.5479*、 0.5478*、0.4899*.单株产量与叶柄宽、叶片数的相关未达到显著水平.回归分析和通径分析结果表明,叶片宽、叶片数、叶柄长是影响乌塌菜产量的关键因素,其中叶片宽、叶片数对单株产量的直接作用较大.

Correlation and Path Analysis ofSome Agronomic Characters of Savoy (Brassica chinensis var. rosularis Tsen et Lee.)

The phenotypic correlation and path analysis were stud ied with 17 local cultivars of savoy. There were significant or very significant correlation between yield per plant and leaf width,leaf stalk thickness,leafs talk length and leaf length. Their correlation coefficients (r) were 0.6674 ** 0.5479*,0.5478* and 0.4899* respectively. But there was no significant correlation between yield per plant and leafstalk width or leaf number. The res ults of path analysis indicated that leaf width,leaf number and leafstalk lengt h were important factors for yield per plant,and the direct effects of leaf wid th and leaf number were stronger than that of leafstalk length.