云南师范大学学报（自然科学版）2025，Vol.45Issue(4)：35-42,8.DOI:10.7699/j.ynnu.ns-2025-042
金沙江干暖河谷环境中牛至的休眠类型及萌发特征
Dormancy Types and Germination Characteristics of Origanum vulgare in Dry-warm Valley of Jinshajiang River
摘要
Abstract
This study investigates the seed dormancy type and the response mechanisms of seed germi-nation to temperature and light of Origanum vulgare growing in the dry-warm valley of the Jin-shajiang River.The results indicated that seeds exhibit non-deep physiological dormancy at dispersal,which can be alleviated through dry after-ripening and GA3 treatment.After dormancy was broken,seeds had a higher germination maximum and a wider germination temperature threshold range,and the optimal germination temperature range was 15～30℃,which would inhibit seed germination if the temperature was too high or too low.There was no significant difference in seed germination percent-age under alternating temperature conditions compared with constant temperature conditions,and the dark environment would inhibit the germination of O.vulgare seeds.These seed dormancy and germi-nation characteristics are the result of the long-term evolution of plants adapted to the harsh growing environment in the dry-warm valley.关键词
牛至/种子萌发/休眠/光照/积温模型Key words
Origanum vulgare/Seed germination/Dormancy/Light/Thermal time model分类
农业科技引用本文复制引用
董丽娟,王帆,陈娜,杨丽娥,彭德力..金沙江干暖河谷环境中牛至的休眠类型及萌发特征[J].云南师范大学学报（自然科学版）,2025,45(4):35-42,8.基金项目
国家自然科学基金资助项目(32060079) （32060079）
云南省基础研究计划资助项目(202501AT070007). （202501AT070007）
