不同香水月季染色体倍性鉴定及其繁育系统分析
Identification of chromosome ploidy and analysis of breeding system of different Rosa odorata
侯秋梅 1周艳 1杨朔 1张佳佳 1周洪英 1吴洪娥1
作者信息
- 1. 贵州科学院贵州省植物园,贵阳 550001
- 折叠
摘要
[目的]香水月季(Rosa odorata)是一类重要的蔷薇属植物种质资源,具有较高的观赏价值及利用价值,为促进香水月季种质资源的开发和利用,对不同香水月季染色体倍性、花部综合特征和繁育系统特性进行研究.[方法]以9种香水月季为材料,采用流式细胞仪、杂交指数检测等对不同香水月季的染色体倍性、花粉活力、柱头可授性、花部特征等进行观察及测定,并对繁育系统进行分析.[结果](1)9种香水月季均为二倍体,其花为两性花,花色明亮,多重瓣或半重瓣,其中5种香水月季雌雄蕊异熟;(2)9种香水月季的花粉活力普遍偏低,最高仅为35.47％,杂交指数(OCI)均≥4,其花粉量-胚珠比(P/O)值为6 709～75 521.[结论]9种香水月季的繁育系统类型均以异交为主,且繁育系统受花粉粒数、花瓣数等多个因素影响.
Abstract
[Objective]Rosa odorata is an important germplasm resource of Rosa,which has high value of appreciation and utilization.In order to promote the development and utilization of the germplasm re-sources,the chromosome ploidy,floral synthesis,and characteristics of breeding systems of different R.odorata were studied.[Methods]The chromosome ploidy,pollen vitality,stigma vitality,and flower characteristics of 9 R.odorata were observed and determined by flow cytometer and outcrossing analysis.We also analyzed the breeding systems.[Results](1)9 R.odorata were identified as diploid,and their flowers were bisexual with bright colors and mostly double or semi-double petals.Male and female flowers of 5 varieties were matured at different time.(2)9 R.odorata pollen vitalities were low,with the highest vitality of 35.47％.The outcrossing index(OCI)of all varieties was ≥4,and pollen volume-ovule ratio(P/O)values ranged from 6 709 to 75 521.[Conclusion]The breeding system of 9 R.odorata is mainly outcrossing,and the breeding system is affected by many factors,such as the number of pollen grains and petals.
关键词
香水月季/染色体倍性/花综合特征/繁育系统Key words
Rosa odorata/chromosome ploidy/floral syndrome/breeding system引用本文复制引用
基金项目
贵州省高层次创新型人才(百层次)项目(黔科合平台人才[2018]5635-2)
贵州省林业种苗站"古老月季种质资源库建设"项目()
贵州山地玫瑰科技创新人才团队建设项目(黔科院人才[2019]05号)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据