| 水稻耐低钾基因型筛选方法的研究 |
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| 引用本文： | 刘国栋,刘更另.水稻耐低钾基因型筛选方法的研究[J].土壤学报,1996,33(2):113-120. |
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| 作者姓名： | 刘国栋 刘更另 |
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| 作者单位： | 中国科学院遗传研究所植物细胞与染色体工程国家重点实验室, 北京 100101;中国农业科学院, 北京 100081 |
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| 摘 要： | 本试验用１／４强度的ＫｉｍｕｒａＢ营养液将灿稻、稻和籼型杂交稻各１１份，分别培养到三叶期后，以含有０．２６５μｍｏｌ／ＬＨ２Ｏ２，０．２ｍｍｏｌ／ＬＣａＳＯ４加０．１或０．２或０．３或０．４ｍｍｏｌ／ＬＫ＾＋的营养液为测定介质，在２５±２℃，连续自然光下，运用离子耗竭技术分别测定了各种不同钾浓度下灿稻、粳稻和杂交稻不同基因型的吸钾速率。并于三叶期和五叶期分别测定这三类基因型的生物量和钾素利用效率。
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| 关 键 词： | 水稻 离子耗竭技术 吸钾速率 钾素利用效率 |
| 收稿时间： | 1995/6/15 0:00:00 |
STUDY ON METHOD SCREENING RICE GENOTYPES TOLERANT TO LOW POTASSIUM |
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| Liu Guodong and Liu Gengling.STUDY ON METHOD SCREENING RICE GENOTYPES TOLERANT TO LOW POTASSIUM[J].Acta Pedologica Sinica,1996,33(2):113-120. |
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| Authors: | Liu Guodong and Liu Gengling |
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| Institution: | State Key Laboratory of Plant Cell and Chromosome Engeering, Institute of Genetics, Chinese Academy of Sciences, Beijing 100101;Chinese Academy of Agricultural Sciences, Beijing 100081 |
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| Abstract: | Three leaf stage seedlings were investigated for intake rates of potassium in each 11 genotypes of O.japonica O.indica and O.indica hybrid at different K+ levels according to ion depletion.Potassium utilization efficiencies at 3 leaf stage were compared with those at 5 leaf stage to screen efficient genotypes.The suitable potassium levels were 0.2mmo1/L for both O.japonica and O.indica and 0.4mmo1/L for O.indica hybrid.Five leaf stage was much better than 3 leaf stage for comparison of genotypic differences in K utilization efficieny. |
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| Keywords: | Ion depletion technique Potassium intake rate Potassium utilization efficiency |
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