Study on the Mechanism of Blueberry Off-season Flowering

doi:10.11924/j.issn.1000-6850.casb2022-0125

Abstract

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

CLC Number:

S663.9

SU Zechun, HE Jiawei, YANG Zhengsong, HE Zhijiao, YANG Yahan, HE Wenjia. Study on the Mechanism of Blueberry Off-season Flowering[J]. Chinese Agricultural Science Bulletin, 2022, 38(19): 37-42.

Figures/Tables 8

References 30

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品种	现蕾次数	现蕾期(月/日	初花期(月/日)	盛花期(月/日)	坐果期(月/日)	果熟初期(月/日)	果熟末期(月/日)
夏普蓝	1	2/22	2/26	3/18	3/26	5/7	6/14
	2	4/9	4/15	5/23	6/1	7/26	8/14
	3	6/19	6/26	7/29	8/9	10/20	11/24
双丰	1	2/9	2/15	3/21	4/1	5/1	5/31
双丰	2	6/7	7/15	8/20	8/29	10/9	11/2
蓝丰	1	2/22	3/7	3/21	3/28	5/18	6/14

品种	现蕾次数	现蕾期(月/日	初花期(月/日)	盛花期(月/日)	坐果期(月/日)	果熟初期(月/日)	果熟末期(月/日)
夏普蓝	1	2/22	2/26	3/18	3/26	5/7	6/14
	2	4/9	4/15	5/23	6/1	7/26	8/14
	3	6/19	6/26	7/29	8/9	10/20	11/24
双丰	1	2/9	2/15	3/21	4/1	5/1	5/31
双丰	2	6/7	7/15	8/20	8/29	10/9	11/2
蓝丰	1	2/22	3/7	3/21	3/28	5/18	6/14

	一级分枝结果枝条数	一级分枝结果数	一级分枝单果重	二级分枝结果枝条数	二级分枝结果数	二级分枝单果重	30 m²产量
一级分枝结果枝条数	1
一级分枝结果数	0.8741^**	1
一级分枝单果重	-0.7771^*	-0.8696^**	1
二级结果枝	-0.6831	-0.5832	0.7480	1
二级分枝结果数	0.0405	0.1960	-0.2292	0.1107	1
二级分枝单果重	-0.1229	-0.3595	0.2075	-0.1847	-0.7977^*	1
30 m²产量	0.9392^**	0.9049^**	-0.7426^*	-0.4903	0.2799	-0.3201	1

	一级分枝结果枝条数	一级分枝结果数	一级分枝单果重	二级分枝结果枝条数	二级分枝结果数	二级分枝单果重	30 m²产量
一级分枝结果枝条数	1
一级分枝结果数	0.8741^**	1
一级分枝单果重	-0.7771^*	-0.8696^**	1
二级结果枝	-0.6831	-0.5832	0.7480	1
二级分枝结果数	0.0405	0.1960	-0.2292	0.1107	1
二级分枝单果重	-0.1229	-0.3595	0.2075	-0.1847	-0.7977^*	1
30 m²产量	0.9392^**	0.9049^**	-0.7426^*	-0.4903	0.2799	-0.3201	1

	一级分枝结果枝条数	一级分枝结果数	一级分枝单果重	二级分枝结果枝条数	二级分枝结果数	二级分枝单果重	30 m²产量
一级分枝结果枝条数	1
一级分枝结果数	0.9346^**	1
一级分枝单果重	0.8897^**	0.6692	1
二级结果枝	-0.0508	0.1756	-0.3308	1
二级分枝结果数	0.471	0.59	0.2321	0.4074	1
二级分枝单果重	-0.2641	-0.3664	-0.0808	-0.4023	-0.8157^**	1
30 m²产量	0.2053	0.4268	-0.114	0.8835^**	0.5649	-0.2882	1