干旱胁迫下新疆7份野生披碱草属种质材料萌发特性与抗旱性评价

doi:10.6048/j.issn.1001-4330.2020.05.021

新疆农业科学 ›› 2020, Vol. 57 ›› Issue (5): 958-966.DOI: 10.6048/j.issn.1001-4330.2020.05.021

干旱胁迫下新疆7份野生披碱草属种质材料萌发特性与抗旱性评价

李瑶, 隋晓青, 郝裕辉, 张树振, 陈爱萍, 张博

新疆农业大学草业与环境科学学院/西部干旱荒漠区草地资源与生态实验室,乌鲁木齐 830052

收稿日期:2019-08-24 发布日期:2020-04-23
通信作者: 陈爱萍(1976-),女,江西人,副教授,博士/博士生导师,研究方向为牧草遗传育种,(E-mail)klcap@sina.com
张博(1963-),男,甘肃皋兰人,教授,硕/博士生导师,研究方向为牧草遗传育种,(E-mail) xjauzb@sina.com
作者简介:李瑶(1994-),女,江苏徐州人,硕士研究生,研究方向为牧草遗传育种,(E-mail)826063485@qq.com
基金资助:
国家牧草现代产业技术体系(CARS34);自治区创新环境(人才、基地)建设专项(PT1804)

Germination Characteristics and Drought Resistance Evaluation of Seven Wild Elymus L. Germplasms in Xinjiang under Drought Stress

LI Yao, SUI Xiaoqing, HAO Yuhui, ZHANG Shuzhen, CHEN Aiping, ZHANG Bo

College of Pratacultural and Environmental Sciences,Xinjiang Agricultural University/Key Laboratory of West Arid Region Grassland Resources and Ecology,Urumqi 830052,China

Received:2019-08-24 Published:2020-04-23
Correspondence author: CHEN Aiping(1976-), Female, born in Jiangxi Province, associate professor, master, mainly engaged in forage genetic breeding research,(E-mail)klcap@sina.com
ZHANG Bo(1963-),Male, born in Gansu Province, professor, mainly engaged in forage genetic breeding research,(E-mail)xjauzb@sina.com
Supported by:
Supported by China Agriculture Research System (CARS34); Innovative Environment (Talent, base) Construction Project of Xinjiang Uygur Autonomous Region (PT1804

摘要/Abstract

摘要： 【目的】研究干旱胁迫对野生披碱草种质萌发的影响,评价其抗旱性。【方法】以7份采自新疆不同地区的野生披碱草属(Elymus L.)种质资源为材料,以聚乙二醇溶液(PEG-6000)设置0、10%、15%、20%、25%和30%共6个浓度,进行萌发期抗旱试验,测定不同干旱胁迫下各种质材料发芽指标、胚根长、胚芽长变化。【结果】低浓度PEG对P03、P04、P06和P07种质材料的萌发及胚根长、胚芽长有一定促进作用;当PEG浓度达到20%以上时,7份种质材料的萌发均受到抑制,胚根长、胚芽长不断降低。【结论】7份野生披碱草属种质材料抗旱性由强至弱排序为P07>P04>P06>P01>P02> P03>P05。

关键词: PEG-6000胁迫; 隶属函数; 披碱草属; 抗旱性

Abstract: 【Objective】 To study the effects of drought stress on germination of wild Elymus L. materials and evaluate its drought resistance. 【Method】The experimental materials were seven wild germplasms which were collected from different areas of Xinjiang. During the whole germination period, PEG-6000 was used to simulate the drought environment and 6 different concentrations (0, 10%, 15%, 20%, 25% and 30%) were set and indicators of germination, radicle and plumule length of each material under different drought stress were measured.【Result】Low concentration of PEG promoted the germination of some materials, radicle and plumule of P03, P04, P06 and P07 germplasms. When the concentration of PEG reached more than 20%, the germination of all materials was inhibited and the length of radicle and plumule decreased.【Conclusion】The seven materials were sorted according to their drought resistance as follows: P01>P02>P03> P04>P07> P05>P06.

Key words: PEG-6000 stress; subordination function; Elymus.L; drought resistance

中图分类号:

S543

李瑶, 隋晓青, 郝裕辉, 张树振, 陈爱萍, 张博. 干旱胁迫下新疆7份野生披碱草属种质材料萌发特性与抗旱性评价[J]. 新疆农业科学, 2020, 57(5): 958-966.

LI Yao, SUI Xiaoqing, HAO Yuhui, ZHANG Shuzhen, CHEN Aiping, ZHANG Bo. Germination Characteristics and Drought Resistance Evaluation of Seven Wild Elymus L. Germplasms in Xinjiang under Drought Stress[J]. Xinjiang Agricultural Sciences, 2020, 57(5): 958-966.

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干旱胁迫下新疆7份野生披碱草属种质材料萌发特性与抗旱性评价

Germination Characteristics and Drought Resistance Evaluation of Seven Wild Elymus L. Germplasms in Xinjiang under Drought Stress

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