地不容种子休眠及其破除方法研究  

Seed Dormancy and Its Breaking Method for Stephania epigaea

作　　者：施守涛 李村富 刘正杰[1] 林春[1] 杜江 苏为耿 毛自朝[1,4] SHI Shou-tao;LI Chun-fu;LIU Zheng-jie;LIN Chun;DU Jiang;SU Wei-Gen;MAO Zi-chao(College of Agriculture and Biotechnology,Yunnan Agricultural University,Kunming Yunnan 650201,P.R.China;Yunnan Bio-Valley Pharmaceutical Co.,Ltd.,Kunming Yunnan 650503,P.R.China;Yunnan forestry and grassland Technology Extension Station,Kunming Yunnan 650204,P.R.China;Center of Improvement and Utilization of Characteristic Resource Plants,Yunnan Agricultural University,Kunming Yunnan 650201,P.R.China)

机构地区：[1]云南农业大学农学与生物技术学院,云南昆明650201 [2]云南生物谷药业股份有限公司,云南昆明650503 [3]云南省林业和草原技术推广总站,云南昆明650204 [4]云南农业大学特色小宗作物研究中心,云南昆明650201

出　　处：《西部林业科学》2021年第6期117-123,共7页Journal of West China Forestry Science

基　　金：云南省农业联合重点项目2017FG001(-002);云南省大学生创新创业计划训练项目(201710676012);云南生物谷药业股份有限公司项目(KX141564000);云南山地核桃中幼林抚育及复合经营技术示范项目(2020)TS05。

摘　　要：为探寻地不容种子休眠机制及解除方法,以移栽于云南农业大学的地不容野生植株的种子为材料,采用机械划破种皮、摩擦处理、热水及硫酸浸泡等方法,测定当年成熟种子的生活力、萌发率、发芽率与吸水率,以明确其休眠机制,比较不同方法解除地不容种子休眠的效果。结果显示:种皮障碍是种子休眠主要机制,划破种皮、摩擦处理、硫酸处理可使地不容种子的萌发率达96.00%、63.33%、88.67%。种皮束缚是休眠主要机制,机械划破种皮、摩擦处理、98%浓硫酸浸泡能有效解除地不容种子休眠。In order to elucidate the seeds dormancy mechanism of Stephania epigaea Lo and to find effective ways to break the seed dormancy,the viability,germination rate,water absorption rate and seed coat inhibitor of mature seeds in the seeds of wild plants transplanted in Yunnan Agricultural University,were determined by routine methods.The seed coat was cut mechanically,the germination rate was determined by friction treatment,and soaked in hot water and sulfuric acid.The effects of different methods on relieving seed dormancy were compared.The results showed that the main reason of seed dormancy is barrier of seed coat.After cutting,friction treating or the H_(2)SO_(4) treating resulted in partial breaking seed cots,the treated seeds germination was promoted and the germination rates rising to 96%,63.33%and 88.67%.The main mechanism of dormancy is the restraint of seed coat.Mechanical cutting of the seed coat,friction treatment and 98%concentrated sulfuric acid soaking can effectively relieve dormancy.

关 键 词：地不容 种子休眠 机械束缚 解除休眠 种子萌发 

分 类 号：S722[农业科学—林木遗传育种] Q945.35[农业科学—林学]