GENETIC RELATIONSHIP BETWEEN COLD HARDINESS + GROWTH AT LOW TEMPERATURE IN MEDICAGO SATIVA
GENETIC RELATIONSHIP BETWEEN COLD HARDINESS + GROWTH AT LOW TEMPERATURE IN MEDICAGO SATIVA
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DOI：
10.1038/hdy.1964.22
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发表时间：
1964-01-01
期刊：
影响因子：
3.8
通讯作者：
DADAY, H
中科院分区：
文献类型：
--
作者：
DADAY, H
研究了紫花苜蓿亲本及其F1、F2代低温生长与冷害敏感性的遗传关系。亲本品种间相关系数高且呈正相关。在单株条件下，F2代在低温和冷害下的生长表型变异显著大于F1代。两个性状的遗传力都很高(0。25比0。57)在F1和F2。F2代的表型、基因和环境相关系数都非常接近于零。低温冷害与生长的正相关系数被解释为亲本品种对自然选择的独立反应。抗寒性与低温生长相结合，在此调查的基础上，可能会对选择做出快速反应。
The genetic relationship between growth at low temperatures and susceptibility to cold injury was investigated in parental varieties, and their F1 and F2 of M. sativa. High and positive correlation coefficients were found between parental varieties. The phenotypic variances of growth at low temperature and cold injury were significantly greater in F2 than in F1, under single plant conditions. The heritabilities of both characters were high (0. 25-0. 57) in F1 and F2. The phenotypic, genotypic and environmental correlation coefficients were very close to zero in F2. The positive correlation coefficients between cold injury and growth at low temperature is interpreted as an independent response to natural selection in the parental varieties. Cold resistance has been combined with growth at low temperatures and a rapid response to selection may be expected on the basis of this investigation.