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首页> 外文期刊>Acta Horticulturae >Effects of bud break period on shoot length and fate in 'Algerie' loquat.
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Effects of bud break period on shoot length and fate in 'Algerie' loquat.

机译：芽期对“阿尔及利亚” lo芽长和命运的影响。

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摘要

Loquat (Eriobotrya japonica Lindl.) blooms profusely in autumn forming terminal panicles on new shoot growth. Observations have indicated that panicle initiation shortly precedes shoot growth cessation in summer. With the aim to gain more information about shoot growth and flowering transition, we have compared the dynamic of growth in shoots starting to grow early in the season, versus shoots sprouting in the middle and at the end of the vegetative cycle, and determined the influence of the bud break period on bud fate. Three different dates of bud break were detected and determined three populations of shoots. They occurred preceding harvest (March), after harvest (late May), and in early June. Early growing shoots produced three vegetative flushes, whereas the shoots starting to grow in late May or in June only had two flushes. For each single shoot, new young leaves emerged only after the preceding ones have completely expanded. This suggests an endogenous control on new leaves emergence determined by carbohydrate availability and/or hormonal activity. The vegetative flushes in early and mid-season shoots temporally overlap, but they were delayed in late formed shoots. The appearance of the panicle was evident in the last week of August in early and mid-season shoots, while it was evident on mid-September in shoots with delayed budbreak. It is concluded that all populations of shoots here analyzed formed panicles although at different times.
机译：qua（ Eriobotrya japonica Lindl。）在秋天大量开花，形成新芽生长的末端圆锥花序。观测表明，在夏季，在穗停止生长之前不久就开始穗。为了获取有关芽生长和开花过渡的更多信息，我们比较了在季节开始时开始生长的芽的生长动态与在营养周期的中部和结束时发芽的芽的动态，并确定了影响芽期对芽命运的影响。检测到三个不同的芽破裂日期，并确定了三个芽种群。它们发生在收获前（3月），收获后（5月下旬）和六月初。早期生长的嫩枝产生了3次植物性潮红，而在5月下旬或6月开始生长的嫩芽仅有两次潮红。对于每一个新芽，只有在前一个叶片完全扩展后才出现新的叶片。这表明由碳水化合物的可利用性和/或激素活性决定了对新叶出苗的内源控制。早期和中期新芽的植物性潮红在时间上重叠，但在后期形成的新芽中被推迟。在8月的最后一个星期的早期和中期芽中，穗的出现是明显的，而在9月中旬，芽延迟出现的芽中则很明显。可以得出结论，尽管在不同的时间，这里所有芽的分析都形成了穗。

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