| Effects of water stress on proline content and relative conductivity in shoots and roots of different wheat cultivars |
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| DOI：10.7606/j.issn.1000-7601.2013.03.24 |
| Key Words: water stress wheat relative conductivity malondialdehyde(MDA) proline |
| Author Name | Affiliation | | ZHANG Shuyi | Center of Dryland Agrieultural Research, Shanxi Academy of Agricultural Science, Taiyuan, Shanxi 030031, China | | SHAO Jiaming | Center of Dryland Agrieultural Research, Shanxi Academy of Agricultural Science, Taiyuan, Shanxi 030031, China | | LI Xinfeng | Shanxi Agricultural University, Taigu, Shanxi 030801, China | | LIU Lingling | Wheat Research Institute, Shanxi Academy of Agricultural Science,Linfen Shanxi 041000, China | | LIU Hui | Shanxi Agricultural University, Taigu, Shanxi 030801, China |
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| Abstract: |
| The relative eonductivity、proline and malondialdehyde(MDA)contents in shoots and roots at seeds ger-mination period of Jinmai 47(dryland species) and Shunmai 1718(water species)were eompared under water stress that was caused by using 19.2% PEG6000 for 24 h. The results showed that:after 24 h of water stress, in shoots and roots of wheat, the relative conductivity were increased 22.71 and 31.04 percent respectively in Jinmai 47, and were increased -2.29% and 5.3% respectively in Shunmai; The membrane injury percentage in Jinmai 47 was greater than in Shunmai1718; The same trend was observed for MDA content in shoots and roots, it was inereased 23.26% and 72.55% respectively in Jinmai 47, and 15.9% and 61.24% respectively in Shunmai 1718. Although membrane organi-zations of two wheat cultivars had being injured, Shunmai 1718 had less injury. Proline contents in shoots and roots of two wheat varieties were significantly increased. For example, it was increased 250.17% and 75.31% respectively in
Jinmai 47;744.72% and 503.42% respectively, in Shunmai1718. Shunmai 1718 had higher percentage of proline content increase than Jinmai 47 did. As a result, Shunmai1718 would have better protection effect on cell membrane system under
water stress than Jinmai 47 did. |
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