Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (19): 37-42.doi: 10.11924/j.issn.1000-6850.casb2022-0125

Special Issue: 生物技术 园艺

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Study on the Mechanism of Blueberry Off-season Flowering

SU Zechun1(), HE Jiawei1, YANG Zhengsong1,2(), HE Zhijiao1, YANG Yahan1, HE Wenjia1   

  1. 1Alpine Economic Plant Research Institute, Yunnan Academy of Agricultural Sciences, Lijiang, Yunnan 674199
    2Lijiang Lanma Biotechnology Development Limited Company in Yunnan Province, Lijiang, Yunnan 674199
  • Received:2022-03-03 Revised:2022-05-14 Online:2022-07-05 Published:2022-07-13
  • Contact: YANG Zhengsong E-mail:806957397@qq.com;4519071@qq.com

Abstract:

To reveal the mechanism of the off-season flowering of blueberry in Yunnan-Guizhou Plateau, the characters of flowering and fruiting were observed in Yunnan, and the yield composing factors at different stages were analyzed by correlation analysis. The results were as follows. (1) ‘Sharpblue’ had flowering and fruiting for three times and no time interval between two successive blooms, ‘Shuangfeng’ had flowering and fruiting twice and an obvious interval was observed between the two blooms, and ‘Lanfeng’ had flowering and fruiting only once in a year. (2) During the first flowering and fruiting of ‘Sharpblue’, the yield had highly and significantly positive correlation with the number of primary fruit branches, while, during the second and third flowering and fruiting of ‘Sharpblue’, the yield had highly and significantly positive correlation with the number of secondary branches. (3) For ‘Shuangfeng’, the yield had highly and significantly positive correlation with the number of primary fruit branches and the number of fruits on primary branches during the first flowering and fruiting, while, during the second flowering and fruiting of ‘Shuangfeng’, the yield had highly and significantly positive correlation with the number of fruits on primary branches. (4) During the flowering and fruiting of ‘Lanfeng’, the yield had highly and significantly positive correlation with the number of secondary fruit branches and the number of fruits on secondary branches. The present study explored the flowering and fruiting characteristics of three blueberry varieties, and the results can provide a theoretical foundation for understanding the correlations of the flower bud differentiation with endgenous hormones, morphological anatomy and flowering genes.

Key words: blueberry, off-season flowering, variety characteristics, endogenous hormones, Yunnan-Guizhou Plateau

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