高级检索+
王海锋, 曾波, 李娅, 乔普, 叶小齐, 罗芳丽. 完全水淹条件下空心莲子草的生长、存活及出水后的恢复动态研究[J]. 植物科学学报, 2008, 26(2): 147-152.
引用本文: 王海锋, 曾波, 李娅, 乔普, 叶小齐, 罗芳丽. 完全水淹条件下空心莲子草的生长、存活及出水后的恢复动态研究[J]. 植物科学学报, 2008, 26(2): 147-152.
WANG Hai-Feng, ZENG Bo, LI Ya, QIAO Pu, YE Xiao-Qi, LUO Fang-Li. Effects of Submergence on Growth,Survival and Recovery Growth of Alternanthera philoxeroides[J]. Plant Science Journal, 2008, 26(2): 147-152.
Citation: WANG Hai-Feng, ZENG Bo, LI Ya, QIAO Pu, YE Xiao-Qi, LUO Fang-Li. Effects of Submergence on Growth,Survival and Recovery Growth of Alternanthera philoxeroides[J]. Plant Science Journal, 2008, 26(2): 147-152.

完全水淹条件下空心莲子草的生长、存活及出水后的恢复动态研究

Effects of Submergence on Growth,Survival and Recovery Growth of Alternanthera philoxeroides

  • 摘要: 为了判断入侵植物空心莲子草(Alternanthera philoxeroides)能否在河岸带的水淹环境中生存,实验研究了空心莲子草在30、60、90d和120d的完全水淹条件下的形态变化、生物量变化、存活及出水后的恢复生长状况。结果发现,空心莲子草在完全水淹条件下分枝的伸长生长加剧,并能快速产生新的叶片,但总生物量及地下部分生物量显著降低。空心莲子草在完全水淹处理后有很高的存活率,淹没120d后存活率仍高达90%。水淹处理结束后,植株能够迅速地开始恢复生长,但恢复生长能力随着水淹持续时间的延长而逐渐降低。结果表明,空心莲子草有很强的水淹耐受能力,能够在江河河岸带生存,但在水淹持续时间较长的距水面较近的地段可能生长较差。

     

    Abstract: Alternanthera philoxeroides is an invasive plant species in China.To confirm whether it can survive the flooding condition on riverbanks,we measured the morphological adaptation,biomass reduction and survival of A.philoxeroides subjected to 30 d,60 d,90 d and 120 d submergence as well as recovery growth after de-submergence.Submergence greatly enhanced shoot elongation and new leaves generation,but it also resulted in notable decrease in total biomass and belowground biomass.Submergence had less effect on survival of A.philoxeroides,the survival of the plants was still 90% after 120 d submergence.A.philoxeroides could regrow quickly after de-submergence,but the recovery ability decreased with the durations of submergence.The results indicated that A.philoxeroides is a submergence-tolerant species,it can distribute naturally on riverbanks,but it maybe perform badly on the low-elevation site on riverbanks which subjected to prolonged submergence.

     

/

返回文章
返回