| 吴宇佳， 谢良商， 张 文，等.耐低钾香蕉基因型筛选指标的研究[J].广东农业科学,2015,42(4):117-122 |
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耐低钾香蕉基因型筛选指标的研究 |
| Research on screening indices of low-potassium tolerance genotypes in banana |
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| DOI： |
| 中文关键词: 香蕉 基因型 耐低钾 筛选指标 |
| 英文关键词: banana genotype tolerance to low-potassium screening indices |
| 基金项目: |
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| 摘要点击次数: 1886 |
| 全文下载次数: 765 |
| 中文摘要: |
| 通过砂培盆栽试验与田间缺钾 (速效钾含量为 95.2 mg/kg)试验，对香蕉苗期耐低钾基因型的筛选
指标进行研究。 结果显示，低钾条件下的地上部绝对生物量与相对生物量(0.025/2.50)、钾积累量和钾利用指数
KUI 极显著相关；砂培条件下 9 叶期幼苗的地上部绝对生物量、相对生物量和钾利用指数与田间产量呈著正
相关。 研究表明，以香蕉苗期地上部相对和绝对生物量、钾利用指数和吸钾量作为指标筛选耐低钾香蕉基因型
是一条行之有效的途径。 |
| 英文摘要: |
| The suitable screening indices of low -potassium tolerance genotypes in banana were studied bydeterming genotypic differences in dry matter and associated traits at the seedling stage in sand culture andpotassium-deficient sandy soi (95.2 mg/kg) cwtrue. Correlation analysis showed that the shoot relative dry weight,shoot K absorption amount and shoot K utilization index were highly significantly correlated with shoot absolute dryweight under the K-deficient media. The shoot relative dry weight, shoot absolute dry weight and shoot K utilizationindex were significantly correlated with the field yield in a potassium-deficient sandy soi. These results suggestedthat it would be an effective method to use the shoot relative dry weight, shoot dry weight, shoot K absorptionamount and shoot K utilization index in banana hydroponic sand culture experiment with The suitable screening indices of low -potassium tolerance genotypes in banana were studied bydeterming genotypic differences in dry matter and associated traits at the seedling stage in sand culture andpotassium-deficient sandy soi (95.2 mg/kg) cwtrue. Correlation analysis showed that the shoot relative dry weight,shoot K absorption amount and shoot K utilization index were highly significantly correlated with shoot absolute dryweight under the K-deficient media. The shoot relative dry weight, shoot absolute dry weight and shoot K utilizationindex were significantly correlated with the field yield in a potassium-deficient sandy soi. These results suggestedthat it would be an effective method to use the shoot relative dry weight, shoot dry weight, shoot K absorptionamount and shoot K utilization index in banana hydroponic sand culture experiment with different potassiumtreatments as selection indicators.The suitable screening indices of low -potassium tolerance genotypes in banana were studied bydeterming genotypic differences in dry matter and associated traits at the seedling stage in sand culture.potassium-deficient sandy soi (95.2 mg/kg) cwtrue. Correlation analysis showed that the shoot relative dry weight,shoot K absorption amount and shoot K utilization index were highly significantly correlated with shoot absolute dryweight under the K-deficient media. The shoot relative dry weight, shoot absolute dry weight and shoot K utilizationindex were significantly correlated with the field yield in a potassium-deficient sandy soi. These results suggestedthat it would be an effective method to use the shoot relative dry weight, shoot dry weight, shoot K absorptionamount and shoot K utilization index in banana hydroponic sand culture experiment with different potassiumtreatments as selection indicators.different potassium treatments as selection indicators. |
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