Time to Flowering of Mung Bean (Vigna radiata) Genotypes and their Hybrids in Response to Photoperiod and Temperature
Time to Flowering of Mung Bean (Vigna radiata) Genotypes and their Hybrids in Response to Photoperiod and Temperature
复制标题
绿豆（Vigna radiata）基因型及其杂种的开花时间对光周期和温度的响应
DOI：
10.1017/s0014479700018470
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发表时间：
1990
影响因子：
1.6
通讯作者：
R. Lawn
中科院分区：
文献类型：
--
作者：
B. Imrie;R. Lawn
绿豆作物的开花时间根据基因型以及播种后期间的日照长度和温度而明显变化。关于开花对光周期和温度的反应的确切性质和遗传，人们知之甚少。因此，这两个因素的变化对开花时间的综合影响进行了评估，在控制环境的研究6个基因型和4个F1杂交种。的反应进行了检查，以符合假设的线性模型，从中推断可能是由遗传控制开花。分析表明，所有的基因型和F1测试的数量短日植物，与一个线可能是中性的可能例外。分析进一步表明，开花时间受到四个基因型特异性属性的影响：最短开花时间，临界光周期（Pc），光周期长于Pc的反应，和温度的反应。在测试的基因型中，观察到每个属性的不同值。在大多数情况下，F1的值更接近一个或另一个亲本，表明显性而不是加性遗传效应。我们的结论是，有几个层次，每个属性提供了潜在的开花响应类型的多样性绿豆。此外，它应该证明有可能操纵绿豆种质，以获得新的属性组合，从而培育适应光热制度的基因型，以前认为不适合作物。
SUMMARY Time to flowering of mung bean crops varies appreciably depending on the genotype, and the daylengths and temperatures prevailing during the period after sowing. Relatively little is known about the precise nature and inheritance of flowering responses to photoperiod and temperature. The combined effects of variations in these two factors on time to flowering were therefore evaluated in controlled environment studies on six genotypes and four F1 hybrids. The responses were examined for conformity with hypothesized linear models from which inferences might be made of the genetic control of flowering. The analyses suggest that all the genotypes and F1s tested were quantitative short day plants, with the possible exception of one line which may be day neutral. The analyses further suggest that time to flowering was influenced by four genotype-specific attributes: minimum time to flowering, critical photoperiod (Pc), responsiveness to photoperiod longer than Pc, and responsiveness to temperature. Among the genotypes tested, different values were observed for each attribute. In most instances, the values for the F1s were closer to one or other parent, indicating dominance rather than additive genetic effects. We conclude that, with several levels each, the four attributes provide the potential for a diversity of flowering response types within mung bean. Further, it should prove possible to manipulate the mung bean germplasm to obtain novel combinations of attributes, and thus to breed genotypes adapted to photothermal regimes not previously considered suitable for the crop.