| Identification of drought resistance of transgenic maize during seed germination stage |
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| DOI：10.7606/j.issn.1000-7601.2013.01.33 |
| Key Words: transgenic maize seed germination osmotic stress subordinate function |
| Author Name | Affiliation | | LENG Yifeng | The Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengd
u, Sichuan 610066, China | | ZHANG Biao | The Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengd
u, Sichuan 610066, China | | ZHAO Jiuran | Beijing Academy of Agricultural & Forestry Science, Beijing 100097, China | | YANG Junpin | The Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengd
u, Sichuan 610066, China | | LIU Ya | Beijing Academy of Agricultural & Forestry Science, Beijing 100097, China | | KANG Jiwei | The Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengd
u, Sichuan 610066, China | | CHEN Jie | The Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengd
u, Sichuan 610066, China | | TANG Haitao | The Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengd
u, Sichuan 610066, China | | TAN Jun | The Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengd
u, Sichuan 610066, China | | HE Wenzhu | The Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengd
u, Sichuan 610066, China |
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| Abstract: |
| The experiment was carried out with 13 transgenic inbred lines of maiz
e under the polyethylene glycol (PEG) simulated water stress to study the impact
of osmotic stress on seed germination. The results showed that the germination
potential, germination rate, root number, radicle length, plumule length and tra
nsforming rate of storage substance in maize were affected by drought stress to
different extend, and there existed significant differences in drought resistanc
e among different inbred lines. The quantitative evaluation by using subordinate
function method indicated that SD10 was the inbred line with high drought-resis
tance; CBF-3-4, SD13, SD05, CBF-1-4, CBF-6-5, SD-P3 and SD-P5 were the inbred li
nes with mid drought-resistance; and SD06, CBF-3-1, SD07, SD-P1 and SD-P4 were the inbred lines with low drought-resistance. The analysis results obtained by grain drought resistant index (GDRI) were similar to those by subordinate function method. |
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