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应用数量遗传学的基本原理,分析了五亲本杂交试验83和84两年的测定结果,估算出番茄果实抗裂性和耐压性的遗传效应,为育种工作提供了遗传学的依据。三组杂交回交试验世代平均数的分析表明,控制番茄果实抗射裂性的基因效应符合加性—显性—上位性遗传模型,但以加性效应为主,不同品种的基因效应存在差异。五亲本1/2P(P+1)双列杂交试验表明,果实抗射裂性的一般配合力大于特殊配合力,欲得到高抗裂品种,宜采用杂交育种方法。果实耐压性的五亲本1/2P(P+1)双列杂交试验遗传模型分析表明,耐压性亦为数量性状,杂种表现居双亲之间,遗传效应为加性兼部分显性,其显性或趋向于不耐压,或趋向于耐压,不同品种有别,欲得到耐压力强的新品种,宜采用杂交育种方法,早期世代即可进行选择,可能获得耐压性超双亲的个体;抗射裂性与耐压性之间存在显著的相关性。
Based on the basic principles of quantitative genetics, the results of two years of the five parents experiment were analyzed. The genetic effects of cracking and pressure resistance of tomato fruits were estimated, which provided genetic basis for breeding. The analysis of the average generations of the three crosses backcross test showed that the genetic effect of controlling tomato fruit anti-fission conformed to the additive-dominance-epistatic genetic model, but the additive effect was the main effect. The genetic effects of different varieties were different . The results showed that the general combining ability of fruit anti-fission was greater than the special combining ability. To obtain high-resistant varieties, the cross breeding method should be adopted. The results of genetic model analysis of the five parents’ 1 / 2P (P + 1) double crosses showed that the pressure tolerance was also quantitative. The hybrid performance was between parents, and the genetic effect was additive and partially dominant. Dominant or tend to be not tolerant, or tend to pressure, different species vary, to get pressure-resistant new varieties, should adopt hybrid breeding methods, early generation can choose, may be pressure over the parents Individuals; There was a significant correlation between anti-eruption and pressure resistance.