Department of Forest Genetics, Swedish University of Agricultural Sciences, Box 7027, S-750 07, Uppsala, Sweden.
Theor Appl Genet. 1986 Jul;72(4):440-8. doi: 10.1007/BF00289524.
Inheritance of frost hardiness was analysed making use of a 12×12 incomplete factorial mating design. Owing to space limitations only 59 families could be tested in four experiments. To link the four experiments, some families were common to two or more experiments. The seedlings were grown in climate chambers under conditions inducing autumn hardening. The plants were exposed to a freezing temperature of -10 °C for three hours at night lengths of 11-13 h. A statistical model was developed for analyses of variance of our data. The genetic variation and the variation due to the cultivation regimes during autumn hardening were of the same magnitude. The additive effects were the most important ones for induction of frost damage. No interaction following long-distance crossing was noted. Mixed model equations were used for ranking of the parents. The results obtained support a polygenic inheritance of frost hardiness. The large within-population variation offers good opportunities for hardiness breeding.
利用 12×12 不完全因子交配设计分析了抗寒性的遗传。由于空间限制，仅在四个实验中测试了 59 个家系。为了将四个实验联系起来，一些家系在两个或更多实验中是共同的。幼苗在诱导秋季硬化的气候室内生长。植物在夜间 11-13 小时的长度下暴露于-10°C 的冷冻温度下 3 小时。为了分析我们数据的方差，开发了一个统计模型。遗传变异和秋季硬化期间培养制度引起的变异具有相同的大小。加性效应对抗冻损伤的诱导最为重要。没有注意到长距离杂交后的相互作用。使用混合模型方程对亲本进行排名。获得的结果支持抗寒性的多基因遗传。大的种群内变异为抗寒性育种提供了很好的机会。
