摘要
对３０份高粱常用恢复系的遗传相关研究表明，抽穗期、一级枝梗数、二级枝梗数、穗粒数、单株产量间呈极显著的正相关，而千粒重与穗粒数、两级枝梗数呈极显著负相关或负相关；穗粒数和千粒重这两个产量构成要素中，穗粒数是主要的，因此选配生育前期长、后期短且灌浆速度快的组合可达到多粒大粒高产的目的。３０份恢复系分类结果表明，中国高粱或近中国高粱类型较多，主要是自然选择和人工选择作用的结果，说明恢复系遗传基础比较狭窄。将引进材料向多方向定向选择以丰富种质资源。对引进材料预先进行基因质测定，可避免配制杂交组合的盲目性。
Studies on the classification of 30 sorghum restorer lines showed that most of them are China-type or near-China-type ones,indicating the genetic bases of sorghum restorer lines are narrow.This might be the consequences of combined action of natural and artificial selections.The present results suggest that poly-directional selections on the introduced germplasms couuld broad their genetic bases and testing the sermplasms types prior to making crosses could make the genetic combinations more predicative.
出处
《吉林农业大学学报》
CAS
CSCD
1994年第2期19-23,27,共6页
Journal of Jilin Agricultural University
关键词
高粱
农艺性状
三系配套
早熟性
Sorghum
Restorer lines
Agronomy traits
Genetic corelation
Classification
