【摘要】 对云南省8个地方栽培木豆群体进行调查,对木豆株高、地径、冠幅、单株荚数、虫荚率、单株粒质量及百粒质量等数量性状变异进行分析,结果表明7个性状不论是群体间还是群体内个体间均存在丰富变异。性状相关性分析表明,单株粒质量与单株荚数呈高度正相关,与株高、地径呈弱正相关。单株荚数、虫荚百分率、百粒质量对产量构成贡献最大,通径系数分别为0 8551、-0 2374、0 1799。若将三个性状相结合,选择单株荚数多、粒大、虫荚少的单株,则后代产量可望有明显增加,有可能育成高产高抗虫性品种。更多还原

【Abstract】 Eight local cultivation pigeonpea populations in Yunnan province were investigated and analyzed on their variance in plant heigh,diameter of stem,canopy,pod numbers per plant,ratio of pod damaged by pests,seed weight per plant and other quantitative characters.Results showed many variances existed either among or within populations.The results showed a high degree of positive correlations between grain yield per plant and pod numbers per plant,but only low degree of positive correlations between grain yield per plant and plant height or stem diameter.There were no obvious correlations between grain yield per plant and other characters.Pod numbers per plant,ratio of pod damaged by pests and 100-seed weight gave the most contribution to seeds yield per plant; their path correlation coefficients were 0.855 1、-0.237 4、0.179 9 respectively.Choosing the plants with more pod numbers,larger seeds and lower pest-damaged ration in breeding program,would give opportunities to get new varieties with high grain yield and strong pests resistance.更多还原