共耐性植物李氏禾繁殖特性的研究

Study on Reproductive Characteristics of Co-tolerance Plant Leersia hexandra

李氏禾具有忍耐淹水和干旱的共耐性特点。通过对李氏禾地下茎的萌芽特性、不同年份建立的无性系种群分蘖动态和种子萌发特性的研究,分析了李氏禾适应特定生境的生长繁殖特性。结果显示:李氏禾地下茎的萌芽能力强,平均萌芽率高达80.0%以上;不同年份无性系种群的分蘖株长度差异显著(P<0.05),建植3年和2年的无性系种群的分蘖株株数显著高于建植1年的;未经处理的李氏禾种子生活力可达69.5%,但是种子萌发率低,一般仅为3.8%。无性繁殖是李氏禾获得子代的主要途径,也可作为其人工繁殖和利用的有效手段。

Leersia hexandra is a kind of waterlogged tolerant and drought tolerant species. of constituted for 1 year. Although the viability of the untreated seeds was 69.5%, the rate of seed germination was only 3.8%. the asexual propagation was the main way for Leersia hexandra reproducing its generations, and also the effective means for artificial propagation and utilization.