| 不同生长方式对2种入侵植物形态特征和生物量分配的影响 |
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| 引用本文： | 杨东娟,赵锐明,,回嵘,郭凤霞,,赵庆芳,吴清韩,马瑞君.不同生长方式对2种入侵植物形态特征和生物量分配的影响[J].西北林学院学报,2014,29(4):69-73. |
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| 作者姓名： | 杨东娟 赵锐明 回嵘 郭凤霞 赵庆芳 吴清韩 马瑞君 |
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| 作者单位： | (1. 韩山师范学院 生物系，广东 潮州 521041;2. 甘肃农业大学 甘肃省作物遗传改良与种质创新重点实验室 植物生产类实验教学中心，甘肃 兰州 730070;3. 甘肃农业大学 生命科学技术学院，甘肃 兰州 730070;4 中国科学院 寒区旱区环境与工程研究所沙坡头沙漠试验研究站，甘肃 兰州730000;5. 西北师范大学 生命科学学院，甘肃 兰州 730070) |
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| 摘 要： | 研究入侵植物南美蟛蜞菊(Wedelia trilobata)和五爪金龙(Ipomoea cairica)在匍匐和攀援方式下的形态、生物量和构件生物量分配特征，结果表明:1) 匍匐的南美蟛蜞菊花数明显多于攀援的植株,差异极显著(p<0.01)，而平均节间长显著(p<0.05)低于攀援植株。除平均节间长外，攀援的五爪金龙分枝节数、分枝叶片数、节总数、花数和叶总数均明显高于匍匐的植株。2)攀援的南美蟛蜞菊植株叶、节和花干重均极显著低于匍匐的植株。攀援的五爪金龙植株叶极显著高于匍匐的植株，节和花干重也高于匍匐的植株。3)匍匐的南美蟛蜞菊除花干重显著高于攀援的植株外，其余均无显著性差异。攀援的五爪金龙植株叶干重比极显著高于匍匐植株、花干重比显著高于匍匐的植株，而茎干重比则极显著低于匍匐的植株。说明南美蟛蜞菊和五爪金龙表现出在不同环境条件下具有较强的形态可塑性（尤其是五爪金龙），这也许是二者具有较强入侵性和能够成功入侵的主要原因之一。
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| 关 键 词： | 生长方式 五爪金龙 南美蟛蜞菊 形态可塑性 生物量 |
Effects of Different Growth Patterns on the Morphological Characteristics and Biomass Distribution of Two Invasive Plants |
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| YANG Dong-juan,ZHAO Rui-ming,' target="_blank" rel="external">,HUI Rong,GUO Feng-xia,' target="_blank" rel="external">,ZHAO Qing-fang,WU Qing-han,MA Rui-jun.Effects of Different Growth Patterns on the Morphological Characteristics and Biomass Distribution of Two Invasive Plants[J].Journal of Northwest Forestry University,2014,29(4):69-73. |
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| Authors: | YANG Dong-juan ZHAO Rui-ming " target="_blank">' target="_blank" rel="external"> HUI Rong GUO Feng-xia " target="_blank">' target="_blank" rel="external"> ZHAO Qing-fang WU Qing-han MA Rui-jun |
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| Institution: | (1. Department of Biology, Hanshan Normol University, Chaozhou, Guangdong 521041, China;2. Gansu Key Laboratory of Crop Genetic & Germplasm Enhancement, Demonstration Center of Experiments and Teaching for Plant Productions, Gansu Agricultural University, Lanzhou, Gansu 730070, China;3. College of Life Science and Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China) |
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| Abstract: | Morphological characteristics, biomass, biomass distribution under different growing patterns of two invasive plants, Wedelia trilobata and Ipomoea cairica were investigated. The results indicated that 1) Under climbing growth, W. trilobata had more number of flowers (p<0.01) and shorter average internode length (p<0.05) when compared to sprawl growth. Under climbing growth, pods of branches, number of branching leaf, total number of pods, total number of leaf and number of flower of
I. cairica were significantly lower (p<0.05) than sprawl growth except for average internode length. 2) Scrambling W. trilobata had lower dry leaf weight, pods and flower compared to sprawl growth plants. On the contrary, scrambling I. cairica had higher dry leaf weight, pods and flower. 3) Under sprawling growth, only flower weight ratio lower than scrambling W. trilobata were obtained. Leaf and flower weight ratio of scrambling I. cairica were significantly higher (p<0.05) than sprawl growth plants, while stem weight ratio were significantly lower (p<0.05). In conclusion, both of W. trilobata and I. cairica had strong morphological plasticity and adaptation under different environments, and this may one of main factor contributed to strong invasiveness and successful invasion of the two species. |
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| Keywords: | growth way Ipomoea cairica Ipomoea cairica Wedelia trilobata morphological plasticity biomass |
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