摘要
Abstract
To effectively utilize the germplasm resource of P.delavayi and accelerate trait improvement in peony breeding,seeds and seedlings of P.delavayi were introduced from its provenance Shangri-La and domestication area Yuzhong,Gansu.Subsequently,they were cultivated,observed and utilized for crossbreeding.The results showed that the seeds and seedlings introduced from Shangri-La all died after 1 to 2 years of cultivation,while the seedling survival rate of seeds introduced from Yuzhong County was 30%.After 1 year of planting,the survival rates of 2-year-old and 5-year-old seedlings introduced from Yuzhong in 2018 reached 85.5%and 68.0%,respectively,while in 2022,the survival rates dropped to 2.7%and 8.0%,respectively.Crossbreeding was carried out using P.delavayi as the female parent and mixed pollen from cultivated peony varieties as the male parent,resulting in 7 hybrid offspring.Using P.delavayi as the female parent and the cultivated peony variety Daojin as the male parent,2 hybrid offspring were obtained.No hybrid offspring were obtained when P.delavayi was used as pollen parent.This study successfully introduced P.delavayi into Heze,enriching the genetic resources of P.delavayi in Heze and providing technical support for the breeding of peony and herbaceous peony varieties containing genes of P.delavayi,improving the level of peony breeding,and promoting the development of the peony industry in China.关键词
滇牡丹/引种/驯化/杂交育种/香格里拉市/榆中县Key words
Paeonia delavayi/Introduction/Domestication/Crossbreeding/Shangri-La/Yuzhong County分类
农业科技
