| 腐植酸提高食用型甘薯块根可溶性糖含量的生理基础 |
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| 引用本文： | 柳洪鹃,李作梅,史春余,张立明.腐植酸提高食用型甘薯块根可溶性糖含量的生理基础[J].作物学报,2011,37(4):711-716. |
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| 作者姓名： | 柳洪鹃 李作梅 史春余 张立明 |
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| 作者单位： | 1 山东农业大学农学院 / 作物生物学国家重点实验室，山东泰安 271018；2 山东省农业科学院，山东济南 250100 |
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| 基金项目： | 山东省自然科学基金项目，国家甘薯产业技术体系北方薯区栽培岗位科学家资助 |
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| 摘 要： | 选用典型的食用型甘薯品种北京553，设置施用腐植酸和对照处理，于2008—2009年2个生长季在山东农业大学农学试验站进行试验。在甘薯块根膨大过程中定期取样，测定块根可溶性糖和淀粉含量及相关酶活性、功能叶蔗糖含量及相关酶活性变化。结果表明, 与对照比较，施用腐植酸显著提高了功能叶磷酸蔗糖合酶活性和蔗糖含量，生育期内平均增幅分别为30.90%和9.48%，显著降低了块根蔗糖合酶活性，平均降幅为11.04%，促进了蔗糖、果聚糖等在块根中的积累；同时，施用腐植酸还显著提高了块根中淀粉酶活性，α-淀粉酶和β-淀粉酶平均增幅分别为11.33%、15.70%，促进了后期葡萄糖、果糖等在块根中的积累。在甘薯收获期，块根可溶性总糖含量提高了15.49%、淀粉含量降低了3.56%。总之，施用腐植酸能够增加块根中蔗糖的供应量、抑制可溶性糖向淀粉转化、促进淀粉水解，这些是提高块根可溶性总糖含量的生理基础。
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| 关 键 词： | 甘薯 腐植酸 块根 可溶性糖 糖代谢酶 |
| 收稿时间： | 2010-09-27 |
Physiological Basis of Improving Soluble Sugar Content in Sweetpotato for Table Use by Humic Acid Application |
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| LIU Hong-Juan,LI Zuo-Mei,SHI Chun-Yu,ZHANG Li-Ming.Physiological Basis of Improving Soluble Sugar Content in Sweetpotato for Table Use by Humic Acid Application[J].Acta Agronomica Sinica,2011,37(4):711-716. |
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| Authors: | LIU Hong-Juan LI Zuo-Mei SHI Chun-Yu ZHANG Li-Ming |
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| Institution: | 1.Agronomy College, Shandong Agricultural University / State Key Laboratory of Crop Biology, Tai’an 271018, China;2.Shandong Academy of Agricultural Sciences, Jinan 250100, China |
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| Abstract: | Soluble sugar content is a main index of edible quality in storage root of sweetpotato for table use. Previous research showed that soluble sugar content in storage organs of plants was increased significantly by application of humic acid (HA), but there have been little research on their physiological basis. The objective of this study was to clarify the physiological basis of soluble sugar content improvement in storage root of sweetpotato by using humic acid. The typical varieties of sweetpotato for tabl... |
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| Keywords: | Sweetpotato Humic acid Storage root Soluble sugar Carbohydrate metabolic enzymes |
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