摘要
糯杂种高粱的9个农艺性状的相关分析表明,性状的遗传相关系数绝大多数大于表型相关系数。茎粗与千粒重相关的环境效应大,而基因型效应小,提高茎粗对增加千粒重主要靠环境效应。穗粒数与穗粒重的基因型相关和环境相关系数均大,故穗粒重的提高是基因和环境效应共同作用的结果。穗长和穗粒数与穗粒重呈正相关达显著或极显著水平,而一级分枝数和千粒重与穗粒重相关不显著。通径分析表明,穗粒数对穗粒重的直接效应最大,而穗长主要是起间接作用。从分析的4个性状来讲,对穗粒重的直接效应分别是穗粒数>株高>茎粗>穗长。
20 glutinous sorghum hybrids were coorked out in incomplete diallel desigu, most genetic coefficients are more than their appearance coefficients of 9 traits. Environment coefficient is more than their genetic coefficient between stem diameter and 1000-grain weight whereas both spieklets/panicle and grain weight/panicle had big genetic coefficient and an environment coefficient. Grain weight/panicle was significantly increased with panicle length and grain No. /panicle increased and, was not significantly increased with No. of first branch and 1000-grain weight. The restrlts of pathanalysis saggestcd spicklets/panicle had largest direct influence on grain weight/panicle, then plant height, stem diameter and panicle length as well.
关键词
高粱
糯型
杂种
F1代
农艺性状
Glutinous sorghum
Characters
Genetic correlation
Pathanalysis
