| 李 磊1，2，3，吴永彬2，倪建中1，刘 文1，洪文君2，代色平1，张行霈4.干旱胁迫对3 种野牡丹科植株形态和生理特性的影响[J].广东农业科学,2017,44(6):49-56 |
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干旱胁迫对3 种野牡丹科植株形态和生理特性的影响 |
| Effects of drought stress on morphology and physiological characteristics of three Melastomataceae species |
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| DOI：10.16768/j.issn.1004-874X.2017.06.007 |
| 中文关键词: 野牡丹‘天骄’ 角茎野牡丹 翅茎异形木 耐旱性 |
| 英文关键词: Melastoma malabathricum‘ Tianjiao’ Tibouchina granulosa Allomorphia eupteroton var.
teretipetiolata drought resistance |
| 基金项目:广州省科技计划项目（2014A030304007）；广州市科技计划项目（201705040006） |
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| 中文摘要: |
| 以3 种野牡丹科植物为材料，研究土壤干旱胁迫对植株形态及生理特性的影响，并用隶属函
数法对其抗旱性进行综合评价。结果表明，3 种植物的叶片相对电导率和脯氨酸含量随着土壤干旱胁迫程
度的增加呈上升趋势；野牡丹‘天骄’和翅茎异形木MDA 含量呈上升趋势，在重度干旱胁迫时达到最大
值，而角茎野牡丹则表现出先上升后下降趋势，在中度胁迫时达最大值（18.1 μmol/g）。3 种植物的可溶
性蛋白含量对干旱胁迫不敏感，而可溶性糖含量则表现出先下降后上升趋势，在轻度干旱胁迫时达最小
值，在重度干旱胁迫时达最大值。隶属函数分析结果表明，翅茎异形木和野牡丹‘天骄’的耐旱性较强，
角茎野牡丹的耐旱性较弱。 |
| 英文摘要: |
| Effects of drought stress on the morphology and physiological characteristics were investigated，
selecting 3 species of Melastomataceae as experimental materials. With fuzzy menbership function value method，
the capability for drougt resistance of 3 Melastomataceae species were comprehensive evaluated. The results
indicated: the relative conductivity and proline content of all 3 species showed an increasing trend with the
increase of soil drought stree. The MDA content were up of Melastoma malabathricum‘ Tianjiao’ and Allomorphia
eupteroton var. Teretipetiolata，which peaked under heavy drought stress，while Tibouchina granulosa were up first
and then down，which peaked in moderate drough stess（18.1μmol/g）. Protein content of the 3 species were insensitive to drought stress. The soluble sugar content increased first and then increased，which was at lowest
volume under slight drough and peaked in heavy drought stress. The result of membership function analysis showed
that A. eupteroton var. teretipetiolata and M. malabathricum‘ Tianjiao’ had is stronger drought tolerance，and T.
granulosa had weak drought tolerance. |
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