Study on Identification Indexes of the Drought Resistance at Maize Seedling Stage

doi:10.7668/hbnxb.2008.S1.028

Abstract

Abstract: Pot experiment was carried out with 14 maize hybrids (Jingke308, Sidan19, Liaodan565, Jidan261, Jingke25, Jingdan28, Jingke508, Zhengdan958, Jingke516, DH3719, Danyu39, Zhongdan808, Nongda108, Jingyu6) under two levels of water supply (repeated drought stress and CK) during seedling stage. In This paper, after repeated drought seedling survival rate, plant height, dry matter accumulation, peroxidase act ivity, malondialdehyde content and proline content could all be used as well parameters for repeated??drought??resistantance of seedling stage identification in?? dexes in maize. There were positive correlations between seedling survival rate after repeated drought and plant height, dry matter accumulation, peroxidase act ivity under repeated drought stress. There were negative correlations between mal?? ondialdehyde content and proline content. And total indexes and seedling survival rate after repeated drought were both significant. According to these data, after repeated drought seedling survival rate as the main element on deciding the an?? ti??dry of maize at the seedling stage. At the same time, seedling survival rate after drought and other five coefficients, that proved multi??mechanism in anti??dry of maize, and that provided according on theory for evaluating.

Key words: Maize, Seedling stage, Drought??resistantance identification, Seedling survival rate after drought

CLC Number:

S513.01

SUN Jun-wei, SUN Shi-xian, YANG Guo-hang, QI Hua, ZOU Zhong-nan, ZHANG Zhen-ping, BAI Xiang-li, LIU Ming. Study on Identification Indexes of the Drought Resistance at Maize Seedling Stage[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S1): 114-117. doi: 10.7668/hbnxb.2008.S1.028.

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