低温条件对苹果早、晚品种休眠释放前后芽中酚类物质代谢的影响

M. El-Yazal
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引用次数: 2

摘要

为了研究酚类化合物的季节变化与低温条件下开花日期的关系。使用了早期和晚期意见苹果品种Barkhar、Local和Strakhan(Malussylvestris)。本研究调查了苹果树早、晚品种对冷量、芽突和发育的影响。结果表明,晚熟品种的芽爆裂比早熟品种少。在前者中,所有品种在芽丛中的酚类化合物(共轭酚和总酚)都有所增加。当休眠开始时,游离酚类物质增加,同时共轭酚类物质水平降低。因此,随着休眠的打破,这些游离酚与有机成分结合,游离酚的浓度降低,以减少对生长的抑制作用。我们得出的结论是,晚品种(Strakhan)在制造新生长方面不太经济,这表明芽突时的芽活力低于早品种(Barkhar和本地品种),并且与早品种相比,在整个芽发育过程中表现出显著的酚类化合物差异模式。
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Metabolic Changes in Phenolic Compounds in Buds during and after Dormancy Releasing in early and late (Malus sylvestris, Mill) Apple Varieties as Effected by Chilling Requirements
In order to study the relation between seasonal changes in phenolic compounds and flower opining date according to chilling requirements. The early and late-opining apple varieties, Barkhar, Local and Strakhan (Malussylvestris) were used. This study investigated variations in chilling requirements, bud burst and development in early and late varieties of apple trees. Results showed less bud burst in late varieties than in early ones. In the former, there were increased in phenolic compounds (conjugated and total phenols) at budburst in all varieties. As dormancy begins, free phenols are increased, coinciding with a reduction in the levels of conjugated phenols. Consequently, as dormancy breaks, these free phenols are conjugate with organic constituents, and a decrease in the concentrations of free phenols occurs, in order to reduce inhibitory effect on growth. We conclude that late varieties (Strakhan) are less economical in manufacturing new growth, as indicated by less bud vigor at budburst than early varieties (Barkhar and local) and show a marked differential phenols compound pattern throughout bud development compared to early varieties.
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International Letters of Natural Sciences
International Letters of Natural Sciences MULTIDISCIPLINARY SCIENCES-
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