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首页> 外文期刊>Acta Horticulturae >Paclobutrazol Effects on Flowering of 'Golden Nugget' Loquat: Preliminary Results
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Paclobutrazol Effects on Flowering of 'Golden Nugget' Loquat: Preliminary Results

机译：多效唑对'金块'Lo开花的影响：初步结果

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摘要

Loquat (Eriobotrya japonica Lindl.) blooms in autumn forming apical panicles after a short summer rest. Deficit irrigation during summer has been proven highly successful in imposing earlier bud rest and hence in advancing blooming date. With the aimof reproducing some of the beneficial effects of summer water deficits, we have explored the effect of soil applications of paclobutrazol on 'Golden Nugget', a vigorous genotype with limited response to deficit irrigation. The experiment was carried outduring two consecutive seasons (2012 and 2013) on 'Golden Nugget' adult trees grafted on BA-29 quince in an orchard located in El Ejido (Almeria, Spain). The results show that paclobutrazol when applied in June (soon after harvest) twice to the soil at asplit dose of 0.2 g/m~2 (4 L/ha) was able to slightly advance apical bud summer rest onset and release. The effects were, however, negligible on blooming dates. Later applications of paclobutrazol (in July) were completely unsuccessful in modifying 'Golden Nugget' reproductive cycle. The results show that shorter, more compact panicles were formed in the trees treated with paclobutrazol. More flowers per panicle of similar size (estimated by their dry weight) were also produced in trees treated with paclobutrazol. Our results are discussed in the context of apical bud dormancy establishment and release.
机译：qua（Eriobotrya japonica Lindl。）在短暂的夏季休息后于秋季开花，形成顶端圆锥花序。事实证明，夏季的亏水灌溉可以使芽早休息并提前开花期，因此非常成功。为了再现夏季缺水的一些有益影响，我们探索了土壤施用多效唑对“金块”的影响，该基因型对缺水的反应有限。该实验是在El Ejido（西班牙阿尔梅里亚）果园的BA-29木瓜上嫁接的“金块”成年树上连续两个季节（2012年和2013年）进行的。结果表明，多效唑在6月（收获后不久）以0.2 g / m〜2（4 L / ha）的分配剂量两次施于土壤中，能够略微促进夏季芽尖的休息和释放。然而，开花期的影响可以忽略不计。后来多效唑的使用（7月）在修饰“金块”繁殖周期方面完全失败。结果表明，用多效唑处理的树木中形成了更短，更紧密的穗。用多效唑处理的树中，每圆锥花序也有更多的相似大小的花（通过干重估算）。我们的结果在顶端芽休眠的建立和释放的背景下进行了讨论。

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