王桢珍, 范体凤, 翁殊斐. 吸附类2种藤本植物对攀附面和干旱胁迫的生长响应[J]. 西南林业大学学报(自然科学), 2024, 44(5): 1–9. DOI: 10.11929/j.swfu.202310050
引用本文: 王桢珍, 范体凤, 翁殊斐. 吸附类2种藤本植物对攀附面和干旱胁迫的生长响应[J]. 西南林业大学学报(自然科学), 2024, 44(5): 1–9. DOI: 10.11929/j.swfu.202310050
Wang Zhenzhen, Fan Tifeng, Weng Shufei. Effects of drought stress and climbing surfaces on growth of two adhering vines[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202310050
Citation: Wang Zhenzhen, Fan Tifeng, Weng Shufei. Effects of drought stress and climbing surfaces on growth of two adhering vines[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202310050

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吸附类2种藤本植物对攀附面和干旱胁迫的生长响应

Effects of drought stress and climbing surfaces on growth of two adhering vines

  • 摘要: 以木质藤本山蒟与草质藤本合果芋盆栽苗为试验材料,设置无支持物和3种不同攀附面供其攀援,分析正常浇水和干旱胁迫下不同攀附面上植株攀援生长状况及其变化规律,探究干旱胁迫和不同攀附面对吸附类藤本植物生长的影响及其适应策略。结果表明:在地上部形态方面,干旱胁迫抑制了2种藤本植物的气生根生长,在干旱无支持物处理中表现出最小的气根长度和数量;与无支持物相比,山蒟在砖墙面表现出显著高的主茎长;合果芋的气根长在木板面显著高于其他攀附面。在根系方面,2种植物均在正常浇水水泥面处理中有着较高的根长和根尖数;在无支持物处理中,山蒟的根系形态指标均最小。在生物量方面,2种植物的地上部生物量和总生物量在干旱胁迫时表现出不同程度的下降,根冠比有所提高,合果芋在正常浇水砖墙面处理中有着显著高的茎和叶柄生物量;2种藤本植物在各攀附面处理中获得了更高的地上部生物量,而在无支持物时,转而增加对地下根系投资来促进生长,其中山蒟在水泥面的总生物量是无支持物时的2倍。

     

    Abstract: To study the growth differences and adaptation strategies of grass and woody vines under drought stress and different climbing surfaces, the potted seedlings of Piper hancei and Syngonium podophyllum were used as experimental materials, and three kinds of climbing surfaces were set up without support for climbing, and the climbing growth status and variation of plants on different climbing surfaces under normal watering and drought stress were analyzed. The results showed that: In terms of aboveground morphology, the aerial root growth of two liana species was significantly affected by water under drought stress, and the length and number of aerial roots were the smallest in drought and no support treatment. Compared with the treatment without support, the stem length of Piper hancei showed a significantly higher on the brick wall surface(P < 0.05), and the aerial root length of the Syngonium podophyllum was significantly higher than that on the other climbing surfaces(P < 0.05). In terms of root morphology, both species had higher root length and root tip number in the normal watering concrete surface treatment. In the non-support treatment, the root morphological indexes of Piper hancei were the smallest. In terms of biomass, the aerial biomass and total biomass of the two plants also showed different degrees of decline during drought stress, the root biomass was improved. And the stem and petiole biomass of Syngonium podophyllum had significantly higher in the normal watering brick wall treatment(P < 0.05). Under normal moisture, both lianas had higher above-ground biomass. But in the absence of supports, the investment in underground root system was increased to promote growth, and the total biomass of Piper hancei on the concrete surface was twice that of the non-supports. In general, in the application of urban vertical greening , it is advisable to choose concrete and brick wall climbing surfaces, and you can add the wooden structure for plants to climb to accelerate the formation of effective greening.

     

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