Anatomical characteristics associated with different degrees of berry cracking in grapes

文献类型： 外文期刊

第一作者： Zhang, Chuan

作者： Zhang, Chuan;Guan, Le;Zheng, Ting;Dong, Tianyu;Fang, Jinggui;Fan, Xiucai;Liu, Chonghuai

作者机构：

关键词： Grape germplasm resources; Berry dehiscence; Anatomical structure observation; Correlation analysis

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

ISSN： 0304-4238

年卷期： 2020 年 261 卷

页码：

收录情况： SCI

摘要： Grape berry cracking refers to the phenomenon of peel cracking that occurs during berry growth and development. It is related to be berry structure and the characteristics of the berry tissue. To study the relationship between berry-cracking and berry anatomical structure, 53 grape germplasm resources were selected. The ripening berry was soaked and cracked in vitro, after which the berry-cracking rate was measured and paraffin sections were prepared to analyze the structural parameters of different berry tissues. Berry cracking was found to be influenced by the shape of cuticle, the arrangement of epidermal cells and,subepidermal cells, and the thickness of cell layers. With regard to cuticle shape, grapes with local suberization had the highest cracking rate (58.33%), and those with a flat cuticle shape had the lowest rate (30.67%). Grape berries with a compact epidermal cell arrangement had the highest berry cracking rate (57.00%). As for subepidermal cell arrangement, the highest berry-cracking rates were observed in varieties with a looser arrangement (83.33%); and the lowest rates were found in varieties with a more compact subepidermal cell arrangement (32.33%). Correlation analysis between the grape berry-cracking rate and cell layer thickness showed that berry-cracking rate was negatively correlated with the thickness of the cuticle, epidermis, and subepidermis. Moreover, the cell shape and size parameters in the different cell layers may also affect the occurrence of berry cracking. Using paraffin sections to analyze cell structure characteristics, we can predict the cracking of grape berries, which would then provide theoretical support for further screening of germplasm resources to identify cracking-resistant berries.

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