| 东乡野生稻渗入系苗期抗旱遗传及生理机制初步分析 |
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| 引用本文： | 付学琴,贺浩华,罗向东,文飘,谢建坤. 东乡野生稻渗入系苗期抗旱遗传及生理机制初步分析[J]. 江西农业大学学报, 2011, 0(5) |
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| 作者姓名： | 付学琴 贺浩华 罗向东 文飘 谢建坤 |
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| 作者单位： | 江西农业大学作物生理生态与遗传育种教育部重点实验室;江西师范大学生命科学院; |
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| 基金项目： | 公益性行业(农业)科研专项(201103007); 国家自然科学基金项目(30960189) |
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| 摘 要： | 以强抗旱性的巴西旱稻、东乡野生稻和弱抗旱性的栽培稻协青早B为对照品种,以基于萎蔫率的抗旱等级为鉴定指标,采用苗期反复自然干旱鉴定法和20%PEG6000模拟干旱法,对江西东乡普通野生稻(Oryza rufi-pogon)/协青早B//协青早B构建的回交重组自交系(Backcross inbred lines,BIL)群体(BC1F9)进行苗期抗旱机理及遗传分析。结果表明:230个BC1F9 BIL群体经2次反复自然干旱后,在1/2MS营养液恢复生长的平均抗旱等级分别为3.76和4.39,萎蔫率呈连续正态分布,暗示东乡野生稻苗期抗旱性表现为质量-数量性状遗传性状特征。将干旱处理一次后等级为1级的14个株系,在20%PEG6000模拟干旱条件下进行处理,结果与反复干旱二次后结果一致,株系1112、1168、1172和1315为强抗旱基因渗入系,可进一步用于抗旱基因的挖掘与利用。在20%PEG6000模拟干旱条件下,强抗旱性株系1112苗期叶片的可溶性糖、脯氨酸含量和SOD活性增加幅度都大于弱抗旱性株系1323,GSH含量下降幅度则低于弱抗旱株系,说明强抗旱株系渗透物质比弱抗旱株系积累快且幅度大,而细胞膜过氧化产物...
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| 关 键 词： | 东乡野生稻 渗入系 苗期 抗旱机理 初步分析 |
Primary Analysis of Drought Resistance Heredity and Physiological Mechanism of Introgression Lines of Common Wild Rice(O.rufipogon Griff.) from Dongxiang in Jiangxi Province at Seedling Stage |
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| FU Xue-qin,,HE Hao-hua,LUO Xiang-dong,WEN Piao,XIE Jian-kun. Primary Analysis of Drought Resistance Heredity and Physiological Mechanism of Introgression Lines of Common Wild Rice(O.rufipogon Griff.) from Dongxiang in Jiangxi Province at Seedling Stage[J]. Acta Agriculturae Universitis Jiangxiensis, 2011, 0(5) |
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| Authors: | FU Xue-qin HE Hao-hua LUO Xiang-dong WEN Piao XIE Jian-kun |
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| Affiliation: | FU Xue-qin1,2,HE Hao-hua1,LUO Xiang-dong2,WEN Piao2,XIE Jian-kun2,3*(1.Key Laboratory of Crop Physiology,Ecology and Genetic Breeding,Ministry of Education,Jiangxi Agricultural University,Nanchang 330045,China,2.College of Life Sciences,Jiangxi Normal University,Nanchang 330022,China) |
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| Abstract: | With the repeated natural drought method and the 20%(w/v) PEG-6000 simulated drought method,the drought resistance of seedlings of a BIL population(BC1F9) of Dongxiang common wild rice(Dwr)/Xieqingzao B(Xqz B)//Xqz B were examined by drought treatment assay and genetic analysis.The control materials included the strong drought-resistant varieties,Brazil upland rice,Dongxiang common wild rice and the drought-sensitive cultivar Xqz B,using grade of drought resistance based on seedling wilting as evaluation in... |
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| Keywords: | Dongxiang Wild Common Rice introgression lines seedling drought resistance mechanism primary analysis |
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