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为确定适合水稻生长发育的硒浓度，采用含不同亚硒酸钠浓度的木村B营养液对水稻苗进行培养、表型观察和生化测定。结果表明，2、4、8μmol/L硒均可促进水稻主根长度的增加，减少侧根数量，但不影响水稻地上部分生长；40、200μmol/L硒则引起水稻生长减慢或停止，总蛋白含量下降，SOD活性提高。采用8μmol/L亚硒酸钠+150 mmol/L氯化钠共同进行胁迫处理，结果显示，亚硒酸钠提高了水稻的盐胁迫耐受性，叶片中的可溶性蛋白含量显著高于对照，SOD的比活力则低于对照。
Abstract：To elucidate the suitable selenium concentration for rice growth, rice seedlings were cultured in Kimura B nutrient solution containing different concentrations of sodium selenite, and phenotypic comparison and biochemical detection were conducted. The results showed that the main root length of rice was increased and the number of lateral roots was reduced by sodium selenite treatment at the concentrations of 2 μmol/L, 4 μmol/L, and 8 μmol/L, while the growth of above-ground parts were not affected by that of these concentrations. Rice seedlings grew more slowly or did not grow anymore under sodium selenite concentrations of 40 μmol/L and200 μmol/L, respectively, and the total leaf protein was significantly decreased, while superoxide dismutase(SOD) activity was remarkably improved. The tolerance of rice to salt stress treated with 8 μmol/L sodium selenite and sodium chloride was increased,and the total soluble protein in leaves was significantly higher than that of the control, while the activity of SOD was lower than that of the control.
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基本信息:
DOI：10.14069/j.cnki.32-1769/s.2024.02.002
中图分类号:S511
引用信息:
[1]腾海艳,任昕,李魁浩,等.硒对水稻生长和盐胁迫耐受性的影响[J].大麦与谷类科学,2024,41(02):6-10+28.DOI:10.14069/j.cnki.32-1769/s.2024.02.002.
基金信息:
2023年宜春学院大学生创新创业训练计划项目（X202310417001）
2024-04-28
2024-04-28