广西植物2026，Vol.46Issue(4)：644-650,7.DOI:10.11931/guihaia.gxzw202508002
中华猕猴桃'仲和红阳'的需冷量研究
Chilling requirement study for flowering of Actinidia chinensis cv.'Zhonghe Hongyang'
摘要
Abstract
The chilling requirement(CR)is a critical factor promoting flower bud differentiation in kiwifruit(Actinidia spp.).Insufficient accumulation of low temperatures in winter leads to abnormal flower bud development,which in turn impairs the yield in the following year.Determining the CR of the Actinidia chinensis cv.'Zhonghe Hongyang'remains an unresolved issue to date.In this study,potted seedlings of the'Zhonghe Hongyang'were used as experimental materials.To determine the CR of this cultivar,the seedlings were exposed to cold treatments of different durations under controlled artificial low-temperature conditions.Meanwhile,the flowering performance of the kiwifruit plants in the second year after cold treatment was monitored to verify the existence of"chilling treatment memory".An artificial climate chamber was employed to simulate the cold accumulation pattern in natural environments.Specifically,five cold treatment groups were set at 4 ℃ low temperature for durations of 2,4,6,8,10 d,respectively;a control group was established concurrently.The effects of different cold accumulation levels on the growth and development of kiwifruit were analyzed based on the flowering and fruiting parameters.The results were as follows:(1)Different durations of cold treatment had a significant effect on the flowering and fruiting of'Zhonghe Hongyang'plants.The optimal cold treatment duration was 6 d at 4 ℃,under which the plants produced 49 flowers and set 17 fruits,significantly more than those in other treatment groups.(2)Follow-up observations in the second year showed that the cold-treated plants could flower normally.Among these,the group treated at 4 ℃ for 6 d still exhibited significantly better flowering performance than other groups,and achieved normal fruit set after artificial pollination.The minimum CR of'Zhonghe Hongyang'when cultivated in Guangdong Province was 576 h,and the plants could retain the cold treatment memory in the second year.Based on the CR results and the influence of terrain conditions,the suitable planting areas for this cultivar in Guangdong are Meizhou,Heyuan,Shaoguan,Qingyuan,and Yunfu.In conclusion,the'Zhonghe Hongyang'variety has a low CR and is suitable for cultivation in South China.关键词
猕猴桃/花芽分化/需冷量/低温处理/冷处理记忆/'仲和红阳'猕猴桃Key words
kiwifruit(Actinidia chinensis)/floral bud differentiation/chilling requirement/low temperature treatment/cold treatment memory/Actinidia chinensis cv.'Zhonghe Hongyang'分类
农业科技引用本文复制引用
郑佳胜,姚淑琴,梁红,张宪智..中华猕猴桃'仲和红阳'的需冷量研究[J].广西植物,2026,46(4):644-650,7.基金项目
广东省科技计划项目(KTP20240155) （KTP20240155）
广州市科技计划项目(2024E04J0067) （2024E04J0067）
河源市科技计划项目(河科社农大专项2023003,2025年省科技专项063) （河科社农大专项2023003,2025年省科技专项063）
清远市科技计划项目(2021SJXM018). （2021SJXM018）
