| Influences of PP333 on potato seedling drought resistance and tuber nutrient under drought stress SUN Yemin,ZHANG Junlian,WANG Wen,LI Chaozhou,WANG Di |
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| DOI：10.7606/j.issn.1000-7601.2012.06.20 |
| Key Words: PP333 potato drought stress drought resistance tuber nutrient |
| Author Name | Affiliation | | SUN Yemin | Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou, Gansu 730070, China
College of Life Science and Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHANG Junlian | Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou, Gansu 730070, China
College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WANG Wen | Jingtai Tiaoshan Farm, Baiyin, Gansu 730400, China | | LI Chaozhou | Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou, Gansu 730070, China
College of Life Science and Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WANG Di | Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou, Gansu 730070, China
College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| The influences of PP333 on potato seedling drought resistance and tuber nutrient under drought stress were studied. The results showed that spraying PP333 could reduce the plant height, tuber number per plant and acrial part biomass, and increase the stem base diameter and biomass of each tuber. Spraying PP333 on the leaves of potato seedling under drought stress promoted the content of proline and soluble sugar and the activity of superoxide dismutase(SOD) significantly, alleviated the reduction of leaf water content and chlorophyll content, and the increase of MDA content and relative conductivity. Spraying PP333 also increased potato seedlings adaption under
extreme drought stress. Spraying PP333 under drought stress also promoted the content of starch, protein, reducing sugar, vitamin C and biomass in potato tuber. In conclusion, PP333 can enhance potato seedlings’ drought resistance and tuber nutrients under drought stress. |
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