西南林业大学学报2025，Vol.45Issue(7)：64-71,8.DOI:10.11929/j.swfu.202407040
无瓣海桑的开花特性和繁育系统
Studies on Flowering Characteristics and Breeding System of Sonneratia apetala
摘要
Abstract
This study elucidates the flowering characteristics and breeding system of Sonneratia apetala,both aims at understanding its reproductive regularity,to achieve population control and effective utilization.The flor-al characteristics,flowering process,flowering phenology were observed.The changes of pollen viability and stigma receptivity during the whole flowering process of single flowers were measured by potassium iodide and benzidine hydrogen peroxide methods.The pollen ovule ratio and hybridization index were calculated to determ-ine the breeding system of S.apetala.Various pollination experiments were carried out and the visiting insects and visiting behaviors were observed.The findings revealed that the collective flowering period of S.apetala is from May to June and from September to October,which present a double peak mass-flowering pattern,and the single flowering period is 41.8±4.6 h.Inflorescence of S.apetala is racemes,apetalous,flowers with scented and nectar,stigmas elongate above pistils.Pollen viability and stigma acceptability performed a trend increasing first and then decreased with the flowering progress,and both reached the peak at the full-flowering period.The P/O ratio was 1 843.13 and the outcrossing index was 4.Combined with the results of different pollination experiment,it showed that the S.apetala belongs to outcrossing type and self-compatible plant.S.apetala is mainly pollinated by insects and supplemented by wind,its effective pollinating insects include Apis cerana,Oecophylla smarag-dina,Lathyrophthalmus arvorum and Trabala vishnou.This study showed that the flower characteristics of S.apetala were compatible with its breeding system of outcrossing type and self-compatibility.Pollen viability and stigma acceptability were higher in general,and it has 2 pollination mechanisms:wind pollination and insect pol-lination.These are the key reasons for its rapid adaptation to new environments,successful introduction and popu-lation expansion.关键词
无瓣海桑/开花特性/花粉活力/传粉/繁育Key words
Sonneratia apetala/flowering characteristic/pollen viability/pollination/breeding分类
农业科技引用本文复制引用
殷陈陈,华炜文,蔡文炘,张雪娜,李锐峰,张勇..无瓣海桑的开花特性和繁育系统[J].西南林业大学学报,2025,45(7):64-71,8.基金项目
台山市红树林保护与修复建设项目资助 （）
无瓣海桑特异性状新品种的选育研究服务项目资助. （）
