套袋遮光对欧李果实糖酸和类黄酮含量的影响
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1.山西农业大学 园艺学院;2.山西农业大学园艺学院;3.红河学院 生物科学与农学学院

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山西农业大学科技创新基金(2018YJ06)


Effect of bagging and shading on the contents of sugar acid and flavonoids in Cerasus humilis
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    摘要:

    【目的】考察不同光照时间及强度对欧李果实糖酸和类黄酮含量的影响,为后期深入探讨光照影响果实品质的分子机制提供参考依据。【方法】以欧李品种‘农大6号’和‘农大7号’为试验材料,采用3种不同遮光率(30%、55%和100%)的果袋分别在果实膨大期和转色期进行套袋处理,测定其果实单果质量、可滴定酸含量、可溶性固形物含量和类黄酮含量。【结果】(1)两品种单果质量和果实可溶性固形物含量均表现为果实膨大期处理低于果实转色期处理,且均随着果袋遮光率的升高而逐渐降低。(2)‘农大6号’可滴定酸含量在套袋处理下均明显降低,且果袋遮光率越高、套袋时间越长,降酸效果越明显,而‘农大7号’可滴定酸含量受影响较小。(3)套袋‘农大6号’类黄酮含量均高于对照,并随着果袋遮光率的增加先升后降,且膨大期处理高于转色期处理。套袋‘农大7号’类黄酮含量仅在果袋遮光率30%时显著高于对照,且膨大期处理显著低于转色期处理,其含量随着果袋遮光率增加在膨大期逐渐增加,在转色期先降后升。【结论】套袋能有效改善欧李果实糖酸和类黄酮含量,‘农大6号’以膨大期套袋为宜,‘农大7号’则以转色期套袋效果更好,而且均以55%遮光率果袋对两品种糖酸和类黄酮含量综合改善效果最佳。

    Abstract:

    【Objective】 To investigate the effects of different light exposure durations and intensities on the sugar, acid, and flavonoid contents of Cerasus humilis fruits, and to provide a reference basis for further exploration of the molecular mechanisms underlying the influence of light exposure on fruit quality. 【Methods】 The C. humilis varieties 'Nongda 6' and 'Nongda 7' were used as experimental materials. Fruit bags with three different light transmission rates (30%, 55%, and 100%) were respectively applied during the fruit enlargement period and color conversion period to measure the fruit weight, titratable acid content, soluble solids content, and flavonoid content. 【Results】(1) The single fruit weight and soluble solids content of both varieties were lower during the fruit enlargement period than during the color conversion period, and both decreased gradually with increasing light-blocking rate of the fruit bags. (2) The titratable acid content of 'Nongda 6' was significantly reduced under bagging treatment, and the higher the light blocking rate of the fruit bag and the longer the bagging time, the more pronounced the reduction in acidity. In contrast, the titratable acid content of 'Nongda 7' was less affected. (3) The flavonoid content of bagged 'Nongda 6' was higher than the control, increasing first and then decreasing with the increase in light-blocking rate of the fruit bag, and the content during the fruit enlargement period was higher than that during the color conversion period. The flavonoid content of bagged 'Nongda 7' was significantly higher than the control only at a 30% light-blocking rate, and the content during the fruit enlargement period was significantly lower than that during the color conversion period. The content increased gradually with the increase in light-blocking rate during the fruit enlargement period, while it first decreased and then increased during the color conversion period. 【Conclusion】 Bagging can effectively improve the sugar, acid, and flavonoid contents of C. humilis fruits. Furthermore, bagging during the fruit enlargement period is suitable for 'Nongda 6', while bagging during the color conversion period is more effective for 'Nongda 7'. Both varieties show the best overall improvement in sugar, acid, and flavonoid contents with a 55% light-blocking rate on the fruit bag.

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  • 收稿日期:2023-11-24
  • 最后修改日期:2024-04-10
  • 录用日期:2024-04-17
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