热带作物学报2025，Vol.46Issue(8)：1856-1863,8.DOI:10.3969/j.issn.1000-2561.2025.08.008
三角梅花部特征及杂交亲和性研究
Investigation on the Floral Characteristics and Cross-compatibility of Bougainvillea spp
摘要
Abstract
The objective of this study is to elucidate the floral characteristics and flowering dynamics of Bougainvillea spp.,investigate the variations in pollen viability,stigma acceptability,and cross-compatibility among different varieties,and provide theoretical and technical guidance for the crossbreeding in Bougainvillea spp..Nine varieties of Bougain-villea were chosen to examine the floral traits and flowering patterns,also to assess pollen viability and stigma accepta-bility.Suitable parents were selected for cross-pollination,and the germination of pollen tubes along with the seed-setting rate of hybridization were observed.The pollen viability of the six male varieties,measured by the ex vivo germination method was high.Among which,three varieties exhibited high pollen viability and could be used as the male parents.The results from the stigma detection of three varieties by benzidine-hydrogen peroxide method showed that the stigma had the strongest deliverability in the V.period,it was concluded that the low seed-setting rate was due to the substantial amount of callose produced in the stigma and the columella following pollination,which distorted and deformed the pollen tube,resulting in only a limited number of pollen tubes reaching the ovule to complete fertilization.Additionally,significant differences were observed in the seed-setting rates among various hybrid combinations.In-compatibility was noted across various cross combinations,predominantly attributed to pre-fertilization disorders.关键词
三角梅/开花生物学/花粉活力/柱头可授性/杂交结实Key words
Bougainvillea spp./flowering biology/pollen viability/stigma receptivity/cross bearing分类
农业科技引用本文复制引用
杨福伟,关文灵,张伟,王乐乐,宋杰,李叶芳..三角梅花部特征及杂交亲和性研究[J].热带作物学报,2025,46(8):1856-1863,8.基金项目
云南省重大科技专项(No.202302AE090018) （No.202302AE090018）
云南省现代农业花卉苗木产业体系建设项目(No.2017KJTX0010) （No.2017KJTX0010）
建设弥勒乡村振兴科技创新县项目(No.202304BT090021). （No.202304BT090021）
