文献类型： 外文期刊

作者： Peng, Ying ¹ ; Tong, Hui ¹ ; Yin, Wuping ¹ ; Yuan, Ye ¹ ; Yuan, Zuhua ¹ ;

作者机构： 1.Hunan Acad Agr Sci, Changsha 410125, Peoples R China

2.Hunan Vegetable Res Inst, Changsha 410125, Peoples R China

3.Hunan Inst Agr Environm & Ecol, Changsha 410125, Peoples R China

关键词： chlorophyll fluorescence induction kinetics curves; chlorophyll fluorescence parameters; fruit appearance; gas exchange parameters; rapid light-response curves

期刊名称：ACTA SCIENTIARUM POLONORUM-HORTORUM CULTUS （ 影响因子：0.7； 五年影响因子：1.0 ）

ISSN： 1644-0692

年卷期： 2024 年 23 卷 1 期

页码：

收录情况： SCI

摘要： The objective of the study is to investigate the mechanism by which summer pruning enhances the growth of pepper plants, as indicated by growth and fruit appearance indicators, photosynthetic rate and gas exchange parameters, rapid light response and induction kinetics curves and the related chlorophyll fluorescence parameters. The results indicated that the leaf growth rate, the individual pepper fruit weight, and the fruit longitudinal and cross diameters of the pruned group were significantly higher than those of the control. The stomatal conductance (G(s)), intercellular CO2 concentration (C-i) and transpiration rate (T-r) of the pruned group were significantly higher than those of the control. The initial slope of the rapid light response curve, which represents light energy utilisation efficiency (alpha), the maximum electron transfer rate (J(max)) and saturated light intensity (PAR(sat)) were all higher in the summer pruning group than in the control group. The F-0 of the pruned group decreased by 16.83%, F-v/F-0 increased by 23.69%, PIabs increased by 58.33%, and DIo/RC decreased by 22.09% compared to the control group. In summary, summer pruning significantly improves the leaf growth rate and fruit appearance quality of pepper, effectively promotes the photosynthesis of functional leaves, and reduces the degree of stress under adverse environmental conditions.