湖北民族大学学报（自然科学版）2024，Vol.42Issue(3)：301-306,6.DOI:10.13501/j.cnki.42-1908/n.2024.09.001
吉祥草种子的萌发特性和脱水耐性研究
Study on Germination Characteristics and Dehydration Tolerance of Reineckea carnea(Andrews.)Kunth Seeds
摘要
Abstract
In order to investigate the germination and storage characteristics of Reineckea carnea(Andrews.)Kunth seeds,a preliminary study was carried out on the germination and dehydration tolerance of freshly matured R.carnea(Andrews.)Kunth seeds through changes in temperature,light,rapid dehydration treatment with silica gel and germination test.The results showed that the fresh mature R.carnea(Andrews.)Kunth seeds were non-dormant,and their optimal germination temperature was a constant temperature of 20～25℃.The germination percentage under the alternating light treatment was significantly higher than that under the dark treatment,which should be a photoblastic seed,yet the germination rate under the alternating light treatment was significantly slower than that under the dark treatment,which was implicitly consistent with their shade-tolerant ecological characteristics.The fresh mature R.carnea(Andrews.)Kunth seeds were less resistant to dehydration and were recalcitrant in that the germination percentage decreased from(88.0±2.2)%to(59.0±6.4)%and(15.5±1.5)%when the moisture content decreased from the initial(19.8±0.1)%to(9.0±0.2)%and(6.0±0.0)%,respectively.Compared to germination percentage,germination potential,and average number of days to germination,the change in germination index was the most sensitive in response to seed dehydration treatments,so it could be used as a preferred index when testing seed dehydration tolerance.This study will improve the application,long-term seed conservation and germplasm innovation of R.carnea(Andrews.)Kunth seeds.关键词
吉祥草/交替光照/种子休眠/发芽指数/脱水处理/顽拗性种子Key words
Reineckea carnea(Andrews.)Kunth/alternating light/seed dormancy/germination index/dehydration treatment/recalcitrant seed分类
农业科技引用本文复制引用
申雪洋,刘相泉,乐靖宇,邓志军..吉祥草种子的萌发特性和脱水耐性研究[J].湖北民族大学学报（自然科学版）,2024,42(3):301-306,6.基金项目
国家自然科学基金项目(31860073) （31860073）
生物资源保护与利用湖北省重点实验室开放基金项目(KYPT012313). （KYPT012313）
