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

doi:10.11923/j.issn.2095-4050.cjas2023-0199

Abstract

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

BIAN Lei, LI Yan, WEI Wanqing, ZHANG Guiqin. The Impact of Sunburn During Flowering Period on Yield of Sweet Cherry[J]. Journal of Agriculture, 2024, 14(10): 42-46.

Figures/Tables 6

References 26

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品种	花期	时间	品种	花期	时间
红灯	初花	4月3日	红蜜	初花	4月5日
	盛花	4月6日		盛花	4月8日
	落花	4月10日		落花	4月11日
美早	初花	4月6日	雷尼	初花	4月6日
	盛花	4月8日		盛花	4月9日
	落花	4月13日		落花	4月14日

品种	花期	时间	品种	花期	时间
红灯	初花	4月3日	红蜜	初花	4月5日
	盛花	4月6日		盛花	4月8日
	落花	4月10日		落花	4月11日
美早	初花	4月6日	雷尼	初花	4月6日
	盛花	4月8日		盛花	4月9日
	落花	4月13日		落花	4月14日