YANG Chun-yan,ZHANG Wen,ZHONG Li,et al.Evaluation of Drought and Heat Resistances for Festuca arundinacea New Strains[J].Northern Horticulture,2013,37(18):63-66.
高羊茅新品系抗旱耐热性评价
- Title:
- Evaluation of Drought and Heat Resistances for Festuca arundinacea New Strains
- 文章编号:
- 1001-0009（2013）18-0063-04
- 分类号:
- S 688.4
- 文献标志码:
- A
- 摘要:
- 以11个高羊茅新品系为试材，以“上农”、“Fawn”为对照，研究比较了在自然高温干旱胁迫过程中不同品系的高羊茅植株的枯黄率和死亡率，测定分析了各品种的叶绿素总含量、叶绿素a、b含量、游离脯氨酸含量及细胞膜透性等生理指标变化，对各品种进行抗旱性评价研究。结果表明：在自然干旱胁迫环境下，各品系、对照在枯黄率和死亡率方面差异显著，叶绿素总含量、叶绿素a、b含量较正常生长条件下，均呈下降趋势，游离脯氨酸含量较正常生长条件下有所积累。经多因素综合评价分析，新品系及对照抗旱性由强到弱依次为：“I112”>“J168”>“F113”>“D78”>“J172”>“D73”>“B166”>“D76”>“上农”>“B29”>“B169”>“J174”>“Fawn”。该试验研究结果将为选育抗旱型高羊茅新品种提供理论依据。
- Abstract:
- Taking 11 Festuca arundinacea varieties as test materials,in contrast of ‘Fawn’(introduced variety) and ‘Shangnong’,the brown rate,death rate,content of total chlorophyll,chlorophyll a,chlorophyll b content,free proline content and cell membrane permeability changes of physiological index of Festuca arundinacea under drought and heat stresse were determinated and observed,evaluation of drought resistance of each variety were studied.The results showed a significant difference between new stains to drought and heat tolerances were:‘I112’>‘J168’>‘F113’>‘D78’>‘J172’>‘D73’>‘B166’>‘D76’>‘Shangnong’>‘B29’>‘B169’>‘J174’>‘Fawn’.These results would give a valid references for new variety breeding.
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备注/Memo
第一作者简介：杨春燕（1982-），女，四川自贡人，硕士，研究实习员，研究方向为种质资源。E-mail：494628745@qq.com.
责任作者：钟理（1983-），男，土家族，重庆黔江人，助理研究员，研究方向为作物遗传育种。E-mail：zhongliycy@126.com.
基金项目：贵州省农业攻关计划资助项目（黔科合NY字［2010］3044号；
黔科合NY字［2008］3070号）；
贵州省科学技术基金资助项目（黔科合J字［2009］2133号；
黔科合J字［2012］2202号）。
收稿日期：2013-04-10