| Comparative experiment on drought-resistant characteristics of different oat cultivars |
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| DOI：10.7606/j.issn.1000-7601.2013.01.31 |
| Key Words: oat drought-resistant characteristic physiological index membership function method clustering analysis |
| Author Name | Affiliation | | ZHANG Na | Oat Scientific and Technical Innovation Team, Inner Mongolia
Agricultural University, Hohhot, Inner Mongolia 010019, China | | ZHAO Baoping | Oat Scientific and Technical Innovation Team, Inner Mongolia
Agricultural University, Hohhot, Inner Mongolia 010019, China | | ZHANG Yanli | Oat Scientific and Technical Innovation Team, Inner Mongolia
Agricultural University, Hohhot, Inner Mongolia 010019, China | | REN Peng | Oat Scientific and Technical Innovation Team, Inner Mongolia
Agricultural University, Hohhot, Inner Mongolia 010019, China | | LIU Jinghui | Oat Scientific and Technical Innovation Team, Inner Mongolia
Agricultural University, Hohhot, Inner Mongolia 010019, China | | WANG Ying | Oat Scientific and Technical Innovation Team, Inner Mongolia
Agricultural University, Hohhot, Inner Mongolia 010019, China |
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| Abstract: |
| 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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