| Physiological responses of weedy rice to drought stress at seedling stage |
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| DOI：10.7606/j.issn.1000-7601.2013.06.023 |
| Key Words: weedy rice drought stress seeding stage physiological response |
| Author Name | Affiliation | | DING Guo-hua, MA Dian-rong, LIU Xiao-liang, KONG De-xiu, GAO Qi, YANG Guang, TANG Liang, GAO Ming-chao, XU Zheng-jin, CHEN Wen-fu* | (沈阳农业大学水稻研究所/农业部东北水稻生物学与遗传育种重点实验室/北方超级粳稻育种教育部重点实验室, 辽宁 沈阳 110161) |
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| Abstract: |
| Physiological responses of weedy rice and upland rice to drought stress were investigated using weedy rice (heb07-2 and WR04-6) and upland rice (IAPAR9). Changes in physiological parameters of leaves and roots of weedy rice and upland rice at 20% polyethylene glycol 6000(PEG-6000) in an artificial climate chamber were investigated. The results showed that the physiological indexes of leaves and root of weedy rice and upland rice exhibited a different trend except for peroxidase(POD) and proline. The weedy rice heb07-2 leaves and roots had higher activities of superoxide dismutase(SOD), catalase(CAT), ascorbate peroxidase(APX) under drought stress. Due to less injury and membrane l
ipid peroxidation, the cell of membrane of weedy rice heb07-2 remained intact. The soluble sugar and soluble protein contents of heb07-2 were higher than those of IAPAR9 and WR04-6 under drought stress. It indicated that weedy rice heb07-2 was less sensitive to drought at seedling stage. |
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