草业科学2016，Vol.33Issue(9)：1651-1657,7.DOI:10.11829/j.issn.1001-0629.2015-0588
高温处理对披碱草种子内生真菌的杀灭效果及发芽活力的影响
Effects of high temperature treatments on viability of Epichloё seeds of Elymus dahuricus
摘要
Abstract
In the present study,high temperature treatments (60,70 and 75 ℃)was employed to construct Epichloё-free populations of Elymus dahuricus.The results indicated that high temperature treatments can kill Epichloёendophyte in the seeds.After 75 ℃ for 20 days treatment,the Epichloёendophyte infected rates sig-nificantly dropped from 93.17% to 0% (P<0.01),and the germination rate,germinating potential,germina-tion index,vital index and seeding fresh weight of E.dahuricus increased by 36.37%,73.94%,50.38%, 63.38% and 7.79%,respectively(P<0.05).Meanwhile,high temperature improved hypocotyls and radical growth and the hypocotyls and radical length of the treated seedlings increased by 0.54% and 14.43%.There-fore,high temperature of 75 ℃ treatment was an effective way to construct Epichloё-free populations of E.dahuricus which provided some academic bases and references for establishing Epichloё-free populations of grass.关键词
内生真菌/高温处理/披碱草Key words
Epichloё/high temperature treatment/Elymus dahuricus分类
农业科技引用本文复制引用
张蕊思,安沙舟,卡斯达尔•努尔旦别克,施宠..高温处理对披碱草种子内生真菌的杀灭效果及发芽活力的影响[J].草业科学,2016,33(9):1651-1657,7.基金项目
新疆农业大学草业科学国家重点学科博士研究生创新基金(XJCYB-2011-01) （XJCYB-2011-01）
高等学校博士学科点专项科研基金(20126504110001) （20126504110001）
新疆自治区研究生教育创新计划科研创新项目(XJGRI2015092) （XJGRI2015092）
