糯杂交高梁F_1代农艺性状的相关和通径分析  

GENETIC CORRELATON AND PATHANALYSIS oF AGRONOMIC CHARACTERS OF F_1GENERATION IN GLUTINOUS SORGHUM

作　　者：刘兴全[1] 丁国祥[1] 谭震波[1] 曾富言 

机构地区：[1]四川省农科院水稻高粱研究所,泸州646100

出　　处：《绵阳农专学报》1993年第3期19-22,27,共5页

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 

分 类 号：S514.035[农业科学—作物学]