辣椒壮苗指数与苗期性状的关系分析

Relationship between seedling index and seedling characters in Capsicu annuumm

用通径分析和灰色关联度分析２ 种方法对２ 个辣椒品种的壮苗指数与苗期性状的关系进行了研究．结果表明，除胚轴长、根／ 茎外，其余性状呈高度正相关，且各性状对壮苗指数的相关系数均达极显著正相关；全株干重、鲜重、茎粗对壮苗指数具有决定性的正向直接作用，茎高则具有负向直接作用；全株鲜重、干重与壮苗指数的关联度最大。辣椒壮苗应具备干物质质含量高、茎粗壮。

Path analysis and grey relational grade analysis technique were used to study,the relationship between seedling index and seedling characters of two Capsicu annuumm varieties.The results indicated that except for plumular axis Length and root/stem ratio,extremely significant positive correlation existed between the other characters,and between the other characters and seedling index,whole plant dry weight,fresh weight and stem width have the decisive positive direct effect on seedling index,While stem helght has negative direct effect.Capsicu annuumm seedling should have such features as high dry matter content,bigger stem width and proper stem height.In addition,application of grey relational analysis to studying interactions between characters of vegetable crop was discussed.