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Journal of Agriculture ›› 2024, Vol. 14 ›› Issue (10): 42-46.doi: 10.11923/j.issn.2095-4050.cjas2023-0199

Special Issue: 生物技术 园艺

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The Impact of Sunburn During Flowering Period on Yield of Sweet Cherry

BIAN Lei1,2(), LI Yan1,2(), WEI Wanqing2,3, ZHANG Guiqin2,3   

  1. 1 Zibo Meteorological Bureau of Shandong Province, Zibo 255000, Shandong, China
    2 Key Laboratory for Meteorological Disaster Prevention and Mitigation of Shandong, Jinan 250031, Shandong, China
    3 Yiyuan Meteorological Bureau, Yiyuan 256100, Shandong, China
  • Received:2023-09-06 Revised:2024-03-07 Online:2024-10-20 Published:2024-10-17

Abstract:

In order to investigate the precise impact of sunburn on fruit yield during the flowering period, this study, taking sweet cherries as an example, conducted correlation analysis and linear regression analysis on yield and meteorological factors using SPSS software, through field observations, surveys, and data statistics. The results showed that the yield had a significant negative correlation with the number of days with temperatures ≤3℃, the number of days with temperatures ≥30℃, and the sunshine duration corresponding to the high-temperature period. The correlation coefficients were -0.585, -0.369, and -0.380, respectively, which passed the significance test with a confidence level of 99 %. This indicated that low temperature, high temperature and strong light (sunburn) during the flowering period could affect the yield of sweet cherries. Field observations also found that high temperatures and strong light during the flowering period of sweet cherries could cause desiccation of the pistil, decreased pollen viability, and even empty anthers, resulting in difficulties or failure in pollination, thus affecting the yield.

Key words: sweet cherry, meteorological factors, correlation analysis, intense light exposure, flowering sunburn, yield