文献类型： 外文期刊
作者： Ye, Tiantian 1 ; Liu, Xue 1 ; Liang, Xiaojie 1 ; Zhu, Xueyan 3 ; Bai, Qian 1 ; Su, Shuchai 1 ;
作者机构： 1.Beijing Forestry Univ, Key Lab Silviculture & Conservat, Minist Educ, Beijing 100083, Peoples R China
2.Ningxia Acad Agr & Forestry Sci, Yinchuan 750002, Peoples R China
3.Beijing Forestry Univ, Sch Technol, Beijing 100089, Peoples R China
关键词： Camellia oleifera; flower thinning; fruit growth; nutrient accumulation; endogenous hormones
期刊名称：HORTICULTURAE （ 影响因子：3.1； 五年影响因子：3.4 ）
ISSN：
年卷期： 2022 年 8 卷 11 期
页码：
收录情况： SCI
摘要： Camellia oleifera is a woody oil tree with overlapping flower bud differentiation and fruit maturation. Therefore, mechanical harvesting of fruits leads to flower abscission. The present study investigated the effects of flower number per tree on fruit growth, yield, nutrient accumulation, and oil fatty acid composition in C. oleifera. Here, we set different flower numbers per tree by thinning flowers. Heavy flower thinning (T2 and T3) significantly reduced fruit yield and the proportion of palmitic, palmitoleic, linoleic, and linolenic acid in fatty acids compared with other treatments. However, heavy thinning favored an increase in fruit size and weight, seed and dry kernel rate of fresh fruit, soluble protein and oil accumulation in seeds, and the proportion of oleic acid and stearic acid in fatty acids, and it had no significant effect on oil yield per tree compared with light thinning (T1) and control (T0). T2 and T3 decreased soluble sugar content in the kernels at the later stage of fruit development (260-320 days after full bloom (DAFB)) in contrast to the rapid fruit growth period (200-230 DAFB). As the crop load decreased, fruit ABA content increased continuously during 260-320 DAFB, while fruit IAA content increased during 260-300 DAFB and then decreased during 310-320 DAFB. These data suggest that the abscission of a few flowers during mechanical harvesting will not affect fruit production efficiency in C. oleifera.
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