Optimization of fruit setting rate method for citrus hybridization

doi:10.16178/j.issn.0528-9017.20240866

Abstract

Abstract:

In order to improve the fruit setting rate for citrus hybridization，two hybrid combinations were prepared with the citrus variety Hongmeiren as the female parent and the citrus varieties Ganping and cocktail grapefruit as the male parents，and the effect of gibberellin spraying period on the quality and fruit setting rate of citrus hybrid fruits was studied. The results showed that for the hybrid combination of Hongmeiren× Ganping and Hongmeiren × cocktail grapefruit，the fruit setting rate of pollination spraying treatment were 43.30% and 46.36%，respectively，which were significantly（p<0.05）higher than those of the control（21.20%，27.44%）and young fruit spraying treatments（23.93%，29.61%）. The fruit solid-acid ratios of pollination spraying treatment of the two hybrid combinations were 26.17 and 26.21，while the fruit solid-acid ratios of young fruit spraying treatment were 23.35 and 24.40，which were significantly higher than those of the control（18.92，21.77）. The results indicated that spraying 50 mg·L^-1gibberellin within 1-2 h after pollination could significantly improve the fruit setting rate and fruit quality of hybrid fruits，and showed the same promoting effect on the hybrid combination with large differences in pollen viability of male parents. The results showed that it was feasible to spray 50 mg·L^-1 gibberellin within 1-2 h after pollination to improve the fruit setting percentage of hybrid fruits in the process of citrus cross breeding.

Key words: citrus, cross breeding, fruit setting rate, gibberellin, pollen viability, solid-acid ratio

CLC Number:

S666

HUANG Xiu, KE Fuzhi, SUN Lifang, NIE Zhenpeng, CUI Changjiang, WANG Luoyun. Optimization of fruit setting rate method for citrus hybridization[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(2): 400-404.

Figures/Tables 3

References 12

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杂交组合	处理	单果重/g	果形指数	果皮厚/cm	可食率/%	可溶性固形物含量/%	可滴定酸含量/%	固酸比
红美人×甘平	授粉喷施	155.02±6.60 b	0.91±0.01 a	0.25±0.01 a	80.59±0.87 a	13.72±0.19 a	0.53±0.03 a	26.17±1.01 a
	幼果喷施	169.92±5.83 b	0.92±0.01 a	0.27±0.01 a	80.05±0.70 a	11.80±0.64 b	0.51±0.03 a	23.35±0.60 a
	对照	219.04±6.30 a	0.92±0.02 a	0.26±0.01 a	81.54±0.67 a	10.80±0.35 b	0.58±0.02 a	18.92±0.90 b
红美人×鸡尾葡萄柚	授粉喷施	144.65±6.31 b	0.94±0.03 a	0.24±0.00 a	78.34±1.39 a	13.00±0.12 a	0.50±0.01 b	26.21±0.54 a
	幼果喷施	200.82±9.48 a	0.92±0.02 ab	0.25±0.01 a	80.15±0.45 a	12.83±0.09 ab	0.53±0.01 b	24.40±0.52 a
	对照	216.60±3.46 a	0.86±0.01 b	0.28±0.02 a	82.22±1.60 a	12.60±0.12 b	0.58±0.02 a	21.77±0.78 b

杂交组合	处理	单果重/g	果形指数	果皮厚/cm	可食率/%	可溶性固形物含量/%	可滴定酸含量/%	固酸比
红美人×甘平	授粉喷施	155.02±6.60 b	0.91±0.01 a	0.25±0.01 a	80.59±0.87 a	13.72±0.19 a	0.53±0.03 a	26.17±1.01 a
	幼果喷施	169.92±5.83 b	0.92±0.01 a	0.27±0.01 a	80.05±0.70 a	11.80±0.64 b	0.51±0.03 a	23.35±0.60 a
	对照	219.04±6.30 a	0.92±0.02 a	0.26±0.01 a	81.54±0.67 a	10.80±0.35 b	0.58±0.02 a	18.92±0.90 b
红美人×鸡尾葡萄柚	授粉喷施	144.65±6.31 b	0.94±0.03 a	0.24±0.00 a	78.34±1.39 a	13.00±0.12 a	0.50±0.01 b	26.21±0.54 a
	幼果喷施	200.82±9.48 a	0.92±0.02 ab	0.25±0.01 a	80.15±0.45 a	12.83±0.09 ab	0.53±0.01 b	24.40±0.52 a
	对照	216.60±3.46 a	0.86±0.01 b	0.28±0.02 a	82.22±1.60 a	12.60±0.12 b	0.58±0.02 a	21.77±0.78 b

杂交组合	处理	授粉花朵数	杂交果数	杂交种子数	坐果率/%	单果种子数
红美人×甘平	授粉喷施	743	322	46	43.30±0.59 a	0.14±0.02 a
	幼果喷施	731	175	27	23.93±1.18 b	0.15±0.02 a
	对照	716	152	19	21.20±0.86 b	0.13±0.01 a
红美人×鸡尾葡萄柚	授粉喷施	704	326	4 521	46.36±0.82 a	14.06±0.14 ab
	幼果喷施	743	220	3 224	29.61±1.03 b	14.65±0.23 a
	对照	706	194	2 674	27.44±0.79 b	13.77±0.22 b

杂交组合	处理	授粉花朵数	杂交果数	杂交种子数	坐果率/%	单果种子数
红美人×甘平	授粉喷施	743	322	46	43.30±0.59 a	0.14±0.02 a
	幼果喷施	731	175	27	23.93±1.18 b	0.15±0.02 a
	对照	716	152	19	21.20±0.86 b	0.13±0.01 a
红美人×鸡尾葡萄柚	授粉喷施	704	326	4 521	46.36±0.82 a	14.06±0.14 ab
	幼果喷施	743	220	3 224	29.61±1.03 b	14.65±0.23 a
	对照	706	194	2 674	27.44±0.79 b	13.77±0.22 b

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