梨竹有性繁殖试验研究

Sexual Propagation of Melocanna baccifera

关键词:  梨竹  发芽率  有性繁殖

Key words:  Melocanna baccifera  germination rate  sexual propagation

摘要:

于2005年6~7月在广西林业科学研究院苗圃和竹种园利用梨竹(Melocanna baccifera(Roxb.) Kurz)的果实直接播种育苗,设置果实重量、播种时间、播种基质等试验因素,研究其对梨竹果实发芽率、成活率以及对竹苗根、竿、叶等器官生长的影响。试验结果表明果实重与发芽率、竹苗地径、高生长、出根量、叶片大小等成正比例关系;播种早比播种迟成活率提高20%;人工改善水分、湿度和光照等条件,育苗成活率比天然更新提高40%,更有利于梨竹林的恢复。

Abstract:

The fruits of Melocanna baccifera were used as seeds to grow seedlings in the nursery and bamboo garden of Guangxi Forest Research Institute in the time of June to July of 2005. The fruit weight, sowing time and sowing mediumwere record. The germination rate, survival rate,bamboo seedling basal diameter, height growth, rooting and leaf size were observed and measured. There are direct proportions of fruit weight to germination rate, seedling basal diameter, amount of roots, size of leaves in the trial. The survival rate of the early sowing seedlings was 20% higher than the late sowing ones. The survival rate in the artificial condition is 40% higher than in the natural condition.