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以19个不同栽培类型胡萝卜品种(或自交系)配制的16个杂交组合为研究对象,通过基因型×环境互作的加性—显性遗传模型探讨胡萝卜根粗和根长的遗传表现,并进行杂种优势预测。方差分析结果表明:根粗主要受加性效应和加性×环境互作效应影响,根长主要受加性效应和显性×环境互作效应影响。根粗和根长的遗传率以普通狭义遗传率为主,而互作狭义遗传率较小。杂交后代的超亲优势为负值,表明在胡萝卜育种中,利用杂种优势增加根粗和根长比较有限,但是利用一些特殊类型的亲本进行杂交可以改善后代的性状表现。
Sixteen hybrid combinations of 19 cultivars (or inbred lines) of carrot cultivars with different cultivars were used as research objects to investigate the genetic performance of the root and root of carrot by additive-dominance genetic model × environment interaction. And heterosis prediction. Analysis of variance showed that the root length was mainly affected by the additive effect and the additive × environment interaction effect. The root length was mainly affected by the additive effect and the dominance × environment interaction effect. The root heritability and root length of the heritability of the rate of the general narrow heritability, while the interaction between the narrow heritability. The heterosis of hybrid progeny was negative, indicating that the use of heterosis increased root diameter and root length in carrot breeding is limited, but using some special types of parents can improve the performance of offspring.