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Effects of fruit load on photosynthetic characteristics of peach leaves and fruit quality

文献类型： 外文期刊

作者： Wang, Xiaojun 1 ; Zhang, Binbin 2 ; Guo, Shaolei 2 ; Guo, Lei 2 ; Chen, Xingxing 1 ; He, Xin 2 ; Ma, Ruijuan 2 ; Yu, Mingliang 2 ;

作者机构： 1.Nanjing Agr Univ, Coll Hort, Nanjing 210095, Peoples R China

2.Jiangsu Acad Agr Sci, Jiangsu Key Lab Hort Crop Genet Improvement, Inst Pomol, Nanjing 210014, Peoples R China

关键词： Fruit thinning; Internal quality; Prunus persica; Photosynthetic index; Sugar content

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.342； 五年影响因子：4.342 ）

ISSN： 0304-4238

年卷期： 2022 年 299 卷

页码：

收录情况： SCI

摘要： We investigated the effects of fruit load on the photosynthetic characteristics of peach leaves and fruit quality in nine-year-old 'Xiahui 6' peach trees. Photosynthetic characteristics, including quantities of photosynthates in leaves of trees with different fruit loads were determined in early May (2 d after fruit set), early June (fruit core hardening period), early July (10 d before harvest), and late July (2 d after harvest). Quality indicators of mature fruits were determined. The results revealed that leaf photosynthetic rate and chlorophyll content decreased in the first two stages, whereas soluble sugar and sugar alcohol contents increased with a decrease in the fruit load. A contrasting trend was observed in the last two stages. Individual fruit quality, soluble solid content, sugar-to acid ratio, soluble sugar, and sugar alcohol content increased with a decrease in fruit load. Growth and development were rapid when the fruit load was low, resulting in earlier ripening. Overall, the findings revealed that a 50% fruit load was optimal for the enhancement of yield and fruit quality in mature 'Xiahui 6' peach trees under field conditions.

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