Early post-veraison growth in grapes: evidence for a two-step mode of berry enlargement
Early post-veraison growth in grapes: evidence for a two-step mode of berry enlargement
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DOI：
10.1111/j.1755-0238.2001.tb00200.x
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发表时间：
2001-01-01
影响因子：
2.8
通讯作者：
Huang, HB
中科院分区：
文献类型：
--
作者：
Huang, XM;Huang, HB
本文叙述了金色麝香（葡萄属vinifera x V. labrusca）果实软化和果肉及果皮组织细胞壁松弛与果实膨压力变化和果实变熟前后糖分积累的关系。浆果变形性变化的开始被认为是前veraison和后veraison生长阶段之间的分界。我们的研究结果证实，果粒变软和糖分积累是果实膨大的先导。浆果“膨压”（从刺穿水果的汁液渗出率推断）突然增加，同时浆果软化和糖的积累，但随后的浆果膨胀稳步下降。皮肤组织的弹性在扩张的早期阶段突然下降，而浆果变形能力增加。我们认为，细胞壁松动在肉组织之前，细胞壁松动在皮肤组织，这种松动序列的结果在两个步骤的序列，浆果软化，随后由浆果扩张。
An account is provided of berry softening plus cell wall loosening in flesh and skin tissues, that relates to changes in berry turgor and sugar accumulation around veraison in Golden Muscat (Vitis vinifera x V. labrusca). The onset of change in berry deformability was taken as a demarcation between pre-veraison and post-veraison growth phases. Our results confirmed that post-veraison berry enlargement was preceded by berry softening and sugar accumulation. Berry 'turgor' (as inferred from the rate of juice exudation from punctured fruit) increased abruptly and concurrently with berry softening and sugar accumulation, but dropped steadily with subsequent berry expansion. Elasticity of skin tissues decreased abruptly during early phases of expansion, while berry deformability increased. We suggest that cell wall loosening in flesh tissues precedes cell wall loosening in skin tissues, and that this loosening sequence results in a two step sequence where berry softening is later followed by berry expansion.