| 张娜,赵宝平,张艳丽,任鹏,刘景辉,王莹.干旱胁迫下燕麦叶片抗氧化酶活性等生理
特性变化及抗旱性比较[J].干旱地区农业研究,2013,31(1):166~171 |
| 干旱胁迫下燕麦叶片抗氧化酶活性等生理
特性变化及抗旱性比较 |
| Comparative experiment on drought-resistant characteristics of different oat cultivars |
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| DOI：10.7606/j.issn.1000-7601.2013.01.31 |
| 中文关键词: 燕麦 抗旱性 生理指标 隶属函数 聚类分析 |
| 英文关键词:oat drought-resistant characteristic physiological index membership function method clustering analysis |
| 基金项目:国家自然基金科学项目（31101126）；内蒙古自然科
学基金项目（2010DS0305）；现代农业产业技术体系建设专项资金（CARS-08-B-5） |
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| 中文摘要: |
| 为选育抗旱型燕麦品种，以内蒙古主产区种植的21个
燕麦品种为试验材料，采用盆栽方式在拔节期进行干旱处理（田间持水量25%，即土壤质量
含水量为5%）,测定叶片生理指标,综合比较其抗旱性,运用隶属函数法和聚类分析法进行分
析,
鉴定各品种的抗旱性。结果表明：坝莜8号、莜麦4400和燕2006的SOD活性分别升高了113.6%
、150.36%和140.15%，坝莜8号的POD活性升高了99.1%；坝莜8号的脯氨酸含量升高了230.6
6%，而其可溶性蛋白含量仅下降9.6%，莜麦4400的丙二醛和相对电导率升高幅度较小，分别
升高了13.4%和46.27%，其抗旱系数较大。隶属函数与聚类分析分类的相同程度为71.43%，
综合分析21个品种的抗旱性可分为强抗旱型、抗旱型、中抗旱型、弱抗旱型4类。其中强抗
旱型有两个品种,分别为坝莜8号和莜麦4400，抗旱型品种为燕2006和燕2004两个品种，中
抗旱型的品种为白燕4号、青永久440和新源燕麦3个品种，其余品种为弱抗品种。 |
| 英文摘要: |
| For breeding the drought resistant oat varities, 2
1 oat cultivars which were widely planted in Inner Mongolia's main producing are
a were used as materials in this experiment. At jointing stage, 25% field capaci
ty was used on oats for drought stress simulation, and physiological indexes in
leaves relating to drought-resistant characteristics were analyzed in order to
compare the drought resistance of each cultivar. The results showed that, the SO
D activity of Bayou 8, Youmai 4400, Yan 2006 improved by 113.6%, 150.36% and 140
.15% respectively, while the POD activity of Bayou 8 improved by 99.1%. The pral
ine of Bayou 8 improved by 230.66%, while its protein decreased only by 9.6%. Th
e MDA and REC of Youmai 4400 improved by 14.3% and 46.27% respectively, while th
e index of its drought resistance was large. The synthetical drought resistance
was estimated by membership function method and validated by clustering analysis
, and the similarity degree of these two methods was 71.43%. The drought-resist
ant types of the 21 cultivars were divided into 4 types in the estimated result,
and they were separately strong resistance, resistance, middle resistance and w
eak resistance. There were 2 cultivars in the type of strong resistance, namely
Bayou 8 and Youmai 4400. Drought resistant cultivars were Yan 2004 and Yan 2006
. Middle drought-resistant cultivars were Baiyan4, Qingyongjiu 4400 and Xinyuan
. The other cultivars were weak in drought resistance. |
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