为充分利用开发无核或少核品种 ,以吉首少核沙田柚为试材 ,经自然授粉、花粉隔离和人工杂交授粉等处理 ,研究了其少核原因 ,并对吉首少核沙田柚的果实品质进行了测定 .结果表明 :吉首少核沙田柚单果平均种子数 2～ 32粒 ;初步认为其少核可能是由于多数幼胚中途停止发育所致 ;少核沙田柚果皮变薄 ,可食率增加 In order to make full use of the development of seedless or less nuclear varieties, Jishou less core Shatin pomelo was used as test material, and pollination by pollination, pollen isolation and artificial hybridization were carried out to study the causes of its less nuclear. The results showed that the average number of seeds per head of Jishou less pomegranate was 2 ~ 32 seeds, which was preliminarily thought to be due to the suspension of development of most immature embryos. increase