| Effects of plant growth regulator S3307 on morphological and physiological characteristics of soybean seedling under drought stress and rewater treatment |
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| DOI：10.7606/j.issn.1000-7601.2016.06.34 |
| Key Words: soybean seedling drought stress rewater S3307 morphological and physiological characteristics |
| Author Name | Affiliation | | LIU Chun-juan | Agronomy of College/Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | SONG Shuang-wei | Agronomy of College/Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | FENG Nai-jie | Agronomy of College/Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | ZHENG Dian-feng | Agronomy of College/Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | GONG Xiang-wei | Agronomy of College/Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | SUN Qiu-xia | Agronomy of College/Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | XING Bao | Agronomy of College/Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | Gao Jie | Agronomy of College/Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | LV Jin-ying | Agronomy of College/Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China |
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| Abstract: |
| In this research, soybean was employed as the experimental material by greenhouse to studied the effects of 50 mg·L-1 S3307 treatment under drought stress and rewater condition on the morphology and physiology of soybean seedling. The results showed that plant heights with S3307 treatment were shorter than those in CK by reducing water consumption. Stem diameter, root length and root weight were increased by the S3307 treatment to have improved drought tolerance capability. Under mild drought (60%～70%), moderate drought (50%～60%) and severe drought (35%～50%), leaf conductance were decreased 51.10%, 31.13%, 46.03% and 49.00%, 12.00%, 42.00% of by SN14-S3307 and HN64-S3307 than SN14-CK and HN64-CK; relative water content were increased 8.96%, 4.74%, 7.87% and 15.23%, 14.01%, 7.00% by SN14-S3307 and HN64-S3307 than SN14-CK and HN64-CK; and chlorophyll content were increased 5.22%, 4.66%, 2.24% and 8.00%, 7.59%, 3.61% by SN14-S3307 and HN64-S3307 than SN14-CK and HN64-CK. In summary, PGRs spraying is important for soybean seedling and drought resistance at the three-leaf stage. |
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