Environmental and genetic regulation of flowering of tropical annual crops
Environmental and genetic regulation of flowering of tropical annual crops
复制标题
热带一年生作物开花的环境和遗传调控
DOI：
10.1023/a:1002944802079
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发表时间：
1997
期刊：
影响因子：
1.9
通讯作者：
T. Wheeler
中科院分区：
文献类型：
--
作者：
R. Summerfield;R. Ellis;P. Craufurd;Q. Aiming;E. Roberts;T. Wheeler
物候（即环境对个体发育的影响）是影响作物适应性的最重要的单一因素。开花的时间特别重要，因为它在很大程度上决定了一年一次的谷物、豆类和油料作物随后何时成熟收获。两个环境因素在诱导开花中至关重要-光周期（日照长度）和温度。在寻求预测从播种到开花的时间f时，已经证明根据从播种到开花的进展速率1/f来分析光热响应是有益的。本文总结了基于利率的模型的优点，而不是基于f的传统方法。在广泛的光热机制，该模型只涉及六个系数，所有这些（及其衍生物）有明确的生物意义。最重要的是，这些系数不受环境的影响;它们是以定量和可预测的方式确定对环境的表型反应的遗传特征。
Phenology (i.e. the influence of environment on ontogeny) is the most important single factor influencing crop adaptation. The timing of flowering is particularly important since it largely determines when annual cereal, pulse and oilseed crops will subsequently be ripe for harvest. Two environmental factors are of overriding importance in the induction of flowering – photoperiod (daylength) and temperature. In seeking to predict times from sowing to flowering, f, it has proved profitable to analyse photothermal responses in terms of the rate of progress from sowing to flowering, 1/f. This paper summarises the advantages of a model based on rates rather than the traditional approach based on f. Over a wide range of photothermal regimes, the model involves just six coefficients, all of which (and their derivatives) have clearly defined biological meaning. Of paramount importance too is that the coefficients are not affected by the environment; they are genetic characters which determine phenotypic responses to the environment in a quantitative and predictable way.