果树学报2024，Vol.41Issue(7)：1401-1409,9.DOI:10.13925/j.cnki.gsxb.20240144
持续高温条件对4个百香果品种开花坐果习性及光合作用的影响
Effects of continuous high-temperature on flowering and fruit-setting habits and photosynthesis of four passion fruit varieties
摘要
Abstract
[Objective]The study aimed to provide theoretical reference for the rapid screening of breeding materials of passion fruit for high-temperature tolerance and summer planting layout in Guangxi.[Methods]The passion fruit varieties Qinmi No.9,Xiaohuangjin,Tainong No.1 and Man-tianxing were chosen as research material.When the maximum daily temperature exceeded 32 ℃ for 5 consecutive days,the flowering,fruit setting rate and photosynthesis of the 4 passion fruit varieties were investigated in the orchards of Nanning and Guigang.The four-point sampling method was used to randomly select 5 healthy passion fruit plants with the same growth trend in 4 growth directions from 4 regional centers divided by diagonal lines to observe flowering and fruit setting.Simultaneously,the photosynthetic data of passion fruit were obtained by LI-6400XT portable photosynthesis measurement system.Subsequently,the statistical software was used to compare the differences in flowering,fruit set-ting,and photosynthesis of 4 passion fruit varieties under continuous high-temperature conditions,and then the heat resistance of the 4 passion fruit varieties was evaluated.Meanwhile,the Pearson correla-tion coefficient was used to explore the potential relationship between flowering,fruit setting,and pho-tosynthesis of the 4 passion fruit varieties.[Results]Qinmi No.9 had the strongest flowering,fruit set-ting,and photosynthesis,followed by Xiaohuangjin and Tainong No.1,and Mantianxing had the weak-est performance in both orchards.All parameters showed significant differences among varieties except for a few parameters that showed significant differences between the different orchards(p＜0.05).Qinmi 9 had more nodes,flowers,buds,and fruits than Xiaohuangjin,Tainong No.1 and Mantianxing.Qinmi No.9 had higher net photosynthetic rate(Pn)Xiaohuangjin,Tainong No.1 and Mantianxing.Qinmi 9 had higher stomatal conductance(G,)than Xiaohuangjin,Tainong No.1 and Mantianxing.Qinmi 9 had higher intercellular CO2 concentration(Ci)than Xiaohuangjin,Tainong No.1 and Mantianxing,and had higher transpiration rate(T)Xiaohuangjin,Tainong No.1 and Mantianxing.[Conclusion]Compared with the other three varieties,Qinmi No.9 has stronger heat resistance,and could be used as main vari-ety to grow in Guangxi,or planted with other varieties.It also could be used as a fine parent material for future heat-resistance breeding.关键词
百香果/高温条件/开花坐果习性/光合特征Key words
Passion fruit/High temperature/Flowering and fruiting habits/Photosynthetic分类
农业科技引用本文复制引用
黄显雅,陈格,黄永才,桂杰,黄诚梅,鞠莹,盛静文,蒋萍,杨柳..持续高温条件对4个百香果品种开花坐果习性及光合作用的影响[J].果树学报,2024,41(7):1401-1409,9.基金项目
广西重点研发计划(桂科AB23026070) （桂科AB23026070）
南宁市科技重大专项(20212007) （20212007）
钦州市科学研究与技术开发计划(20233207) （20233207）
广西农业科学院院发展基金项目(桂农科2022JM68,2024YP088) （桂农科2022JM68,2024YP088）
广西农业科学院基本科研业务专项(桂农科2021YT123) （桂农科2021YT123）
云南省农业生物技术重点实验室开放基金资助项目(202205AG070049-002) （202205AG070049-002）
