Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2014, Vol. 22 ›› Issue (5): 1122-1126.DOI: 10.11733/j.issn.1007-0435.2014.05.033

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Drought Resistance Evaluation of Orchardgrass (Dactylis glomerata) Germplasms at Seedling Stage

JI Yang1,2, ZHANG Xin-quan1, PENG Yan1, HUANG Lin-kai1, LIANG Xiao-yu1,2, MA Xiao1   

  1. 1. Department of Grassland, Sichuan Agricultural University, Ya’an, Sichuan Province 625014, China;
    2. Sichuan Animal Science Academy, Chengdu, Sichuan Province 610066, China
  • Received:2013-11-29 Revised:2014-05-09 Online:2014-10-15 Published:2014-09-30

鸭茅优异种质材料苗期抗旱性鉴定及综合评价

季杨1,2, 张新全1, 彭燕1, 黄琳凯1, 梁小玉1,2, 马啸1   

  1. 1. 四川农业大学动物科技学院, 四川 雅安 625014;
    2. 四川省畜牧科学研究院, 四川 成都 610066
  • 通讯作者: 张新全
  • 作者简介:季杨（1983-），男，四川崇州人，博士研究生，主要从事牧草及草坪草育种与种质资源研究，E-mail：jiyang221@163.com
  • 基金资助:

    科技部973项目“多基因聚合创制多年生饲草种质的生物学基础研究”（2014CB138705）；国家现代牧草产业技术体系（CARS-35-05）；教育部博导类联合基金（20105103110006）（20115103110004）；国家“十二五”科技支撑计划项目（2011BAD17B03）资助

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Abstract:

In order to well document the difference of drought-resistance among nine orchardgrass germplasms, physiological changes of leaf relative water content, relative electrical conductivity, malondialdehyde, soluble sugar content, free proline accumulation, superoxide dismutase, catalase, peroxidase and plant height were measured under drought stress and rewatering conditions at seedling stage. The results showed that the drought resistance of nine tested materials was classified into three types by Euclidian distance method. Baoxing, 02-116 and Sparta varieties had stronger drought resistance, and Taurus, Gulin, Chuandong, Donata varieties had moderate drought resistance, while Proto and 01998 varieties were sensitive to drought stress.

Key words: Orchardgrass, Seedling stage, Drought resistance, Evaluation

摘要：

为掌握南方地区主要栽培的9份鸭茅（Dactylis glomerata）种质材料抗旱性差异，通过干旱胁迫-复水法对其苗期 9个抗旱指标进行测定，综合评价其抗旱性。结果表明：以欧式距离法可将9份种质材料划分为3个抗旱等级，抗旱性相对较强的是宝兴、02-116、斯巴达，中等抗旱性的是金牛、古蔺、川东、德娜塔，对干旱胁迫相对敏感的是波特、01998。

关键词: 鸭茅, 苗期, 抗旱, 评价

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