| GA3 诱导的单性结实‘宁海白’白沙枇杷糖代谢的研究 |
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| 引用本文： | 陈俊伟,冯健君,秦巧平,刘晓坤,吴江,谢鸣.GA3 诱导的单性结实‘宁海白’白沙枇杷糖代谢的研究[J].园艺学报,2006,33(3):471-476. |
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| 作者姓名： | 陈俊伟 冯健君 秦巧平 刘晓坤 吴江 谢鸣 |
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| 作者单位： | (浙江省农业科学院园艺研究所, 浙江杭州310021; 浙江省宁海县农林局, 浙江宁海 315600) |
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| 摘 要： | 研究了花蕾期GA3 0.5、1.0 g·L - 1处理诱导的单性结实‘宁海白’无核白沙枇杷的糖积累与代谢特性。结果表明: 两种浓度的GA3 诱导的无核枇杷中, 其蔗糖、葡萄糖、果糖和总糖的含量均低于正常有核果, 并随处理浓度的增加而下降, 其中成熟时处理与对照之间各种糖的含量差异达到显著水平。不同浓度GA3 处理后, 果实中蔗糖代谢酶( SS、SPS、转化酶) 、己糖代谢酶(HXK、FRK) 和山梨醇脱氢酶( SDH) 等的活力均低于正常有核果, 并随处理浓度的增加而下降。上述结果表明, GA3 诱导无核, 导致果实糖代谢酶活力的下降, 是无核枇杷果实含糖量下降的主要因子。
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| 关 键 词： | 枇杷 GA3 单性结实 糖代谢 糖积累 |
| 文章编号： | 0513-353（2006）03-0471-06 |
| 收稿时间： | 2005-08-22 |
| 修稿时间： | 2005-08-222005-11-01 |
Characteristics of Sugar Metabolism and Accumulation in GA3 Induced Parthenocarpic White Flesh Loquat ‘Ninghai Bai’ Fruit |
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| Chen Junwei,Feng Jianjun,Qin Qiaoping,Liu Xiaokun,Wu Jiang,Xie Ming.Characteristics of Sugar Metabolism and Accumulation in GA3 Induced Parthenocarpic White Flesh Loquat ‘Ninghai Bai’ Fruit[J].Acta Horticulturae Sinica,2006,33(3):471-476. |
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| Authors: | Chen Junwei Feng Jianjun Qin Qiaoping Liu Xiaokun Wu Jiang Xie Ming |
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| Institution: | ( Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, China; Agricultural and Forestry Bureau of Ninghai County, Ninghai, Zhejiang 315600, China) |
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| Abstract: | The characteristics of sugar metabolism and accumulation in parthenocarpic white flesh loquat(Eriobotrya japonica Lindl. ‘Ninghai Bai’) fruit induced by 0.5 and 1.0 g·L - 1 GA3 were studied. The contents of sucrose, glucose, fructose and total sugar in parthenocarpic seedless fruit induced by two concentrations of GA3 were lower than those in the control loquat fruit, and the reduction in sugar content was increased with GA3 concentration. The differences of various sugar content between treated and control fruit were significant ( P = 0.05) at full ripe stage. As a result of the application of different concentrations of GA3, the activities of sucrose metabolizing enzymes ( sucrose synthase, sucrose phosphate synthase and invertase) , hexose metabolizing enzymes (hexokinase and fructokinase) and sorbitol dehydrogenase ( SDH) in GA3 induced seedless fruit were lower than in the control seeded fruit, and the activities also decreased with the increase of GA3 concentration. These results indicate that GA3 induced seedless loquat fruit resulted in lower activities ofsugar metabolizing enzymes, which caused the lower sugar content in seedless loquat. |
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| Keywords: | Eriobotrya japonica Lindl GA_3 Parthenocarpic fruit Sugar metabolism Sugar accumulation |
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