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首页> 外文期刊>Acta Horticulturae >An evolutionary platform for alternate bearing in fruit trees
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An evolutionary platform for alternate bearing in fruit trees

机译:果树中交替轴承的进化平台

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摘要

Alternate bearing has been and still is a major problem in fruit trees. From the point of view of a horticulturist it is a tree productivity syndrome which must be addressed by agro-technical means in order to eliminate or, at least, mitigate the alternation cycle. 'Masting' is a widespread forest tree irregular sexual reproduction pattern that has attracted ecologists who wonder about the survival-advantage of this behavior. From an evolutionary perspective alternate bearing and masting seem to be related and may share a common bio-evolutionary mechanism, responsible for 'yield alternation'. A recently developed resource budget model, based on nonlinear chaos dynamics, seems to account for a broad spectrum of yield alternation patterns. From an evolutionary standpoint, one may envision a domestication-evolutionary continuum from extreme masting, through intermediate alternate bearing, down to regular yield of fully-managed fruit trees. Domestication records of pecan (Carya illinoiensis) support this hypothesis. The alternate bearing of fruit trees appears to be mediated by a 'fruit overload' signal but resource depletion still plays a critical role in the alternate bearing of numerous tree crops.
机译:替代轴承已经且仍然是果树的主要问题。从园艺师的角度来看,它是一种树生产率综合征,必须通过农业技术手段来解决,以便消除或至少减轻交替循环。 “桅杆”是一种广泛的森林树,性生殖模式不规则的性繁殖模式,吸引了生态学家,他想知道这种行为的生存 - 优势。从进化的透视替代轴承和桅杆似乎有相关的,可能分享一个常见的生物进化机制,负责“产量交替”。基于非线性混沌动力学的最近开发的资源预算模型似乎考虑了广泛的产量交替模式。从进化的角度来看,一个人可以通过中间交替轴承来设想从极端桅杆的驯化进化的连续体,以常规的果树的常规产量为单位。山核桃(Carya Illinoiensis)的驯化记录支持这一假设。果树的替代轴承似乎是由“果实过载”信号介导的,但资源耗尽仍然在众多树木作物的交替轴承中发挥着关键作用。

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