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首页> 外文期刊>Acta Horticulturae >Investigating the impact of source/sink manipulations on within tree variations of floral induction in apple
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Investigating the impact of source/sink manipulations on within tree variations of floral induction in apple

机译：调查源/水槽操纵对苹果花卉诱导树的影响

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摘要

In apple, carbon source/sink relationships and inhibiting signal produced by seeds are assumed to affect floral induction (FI). Nevertheless, the respective effect of local variations in carbon source/sink relationships and tree fruit load on FI remains unclear. This study aimed at investigating these effects, considering different distances between leaves, fruits and meristems. Experiments were performed during two years in the south of France on adult trees of the 'Golden' cultivar. On trees previously managed to be either in low or high crop loads, 11 treatments with different kinds of local leaf or fruit removal were set up mid-June. In the next spring, FI rate was evaluated in the different parts of the tree including de-fructified and defoliated parts. FI rate variability among treatments was analyzed with a generalized linear model of the binomial family. The FI rate was reduced in defoliated parts of the trees whatever the defoliation treatment. Moreover, defoliations had a low impact on FIin the not defoliated parts of the trees. Both together these results suggest a major impact of the local source/sink conditions on FI. In fruited parts of the trees subjected to fruit removal, FI rate was lower than expected in not de-fruited trees with a similar crop load. In the non-fruited parts, FI rate was lower than observed for OFF trees probably revealing a flux of carbon from non-fruited parts and/or an inhibiting effect of the fruits on the fruited parts. This study shows that source-sink relationships and distances between sink and source organs of carbon and inhibiting signal have a great impact on FI. Moreover it gives new knowledge on the scale of plant organization at which source-sink relationships affect these processes.
机译：在苹果中，假设种子产生的碳源/水槽关系和抑制信号影响花卉诱导（FI）。然而，派碳源/水槽关系中局部变化和树果载荷对FI的各自效果尚不清楚。这项研究旨在调查这些效果，考虑到叶子，水果和商品之间的不同距离。在法国南部对“金色”品种的成年树木的两年来进行实验。在以前设法的树木或高作物载荷的树木上，6月中旬设立了11种具有不同种类的局部叶子或水果脱落的治疗。在下一个弹簧中，在树的不同部分中评估了集合的速率，包括去势差和落叶部分。用二项式家庭的广义线性模型分析治疗之间的速率变异性。无论侧脱落治疗如何，树木的落叶部分都会减少。此外，落叶对无落叶部分的树木的影响很低。两者都在一起表明本地源/汇总条件对FI的重大影响。在经过水果去除的树木的熔化部分中，除了具有相似作物负荷的非脱渣树中，滤场低于预期。在非熔化的部件中，Fi率低于Off树木，可能露出来自非熔化部件的碳的碳通量和/或果实对果实的抑制作用。本研究表明，碳和抑制信号的水槽和源器官之间的源水槽关系和距离对FI具有很大的影响。此外，它为源水槽关系影响这些过程的植物组织规模提供了新的知识。

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  • 来源
    《Acta Horticulturae》 |2018年第1229期|共8页
  • 作者

    B. Pallas; J.-J. Kelner; D. Chen; S. Martinez; E. Costes;

  • 作者单位

    AGAR Univ. Montpellier C1RAD INRA Montpellier SupAgro Equipe Architecture et Fonctionnement des Especes Fruitieres Montpellier France;

    AGAR Univ. Montpellier C1RAD INRA Montpellier SupAgro Equipe Architecture et Fonctionnement des Especes Fruitieres Montpellier France;

    AGAR Univ. Montpellier C1RAD INRA Montpellier SupAgro Equipe Architecture et Fonctionnement des Especes Fruitieres Montpellier France;

    AGAR Univ. Montpellier C1RAD INRA Montpellier SupAgro Equipe Architecture et Fonctionnement des Especes Fruitieres Montpellier France;

    AGAR Univ. Montpellier C1RAD INRA Montpellier SupAgro Equipe Architecture et Fonctionnement des Especes Fruitieres Montpellier France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 园艺;
  • 关键词

    flowering; carbon allocation; long distance fluxes; defoliation; crop load;

    机译：开花;碳分配;长距离通量;落叶;作物负荷;

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