金钟藤(Merremia boisiana)生物学特点初探

The Study of Biological Characteristics of Merremia boisiana

测定了金钟藤（Merremia boisiana）枝条的生长速度，其枝条在生长季内平均每天长0．43-3-3cm，最快达7．8cm，且强枝能产生新的侧枝，营养生长能力强；调查了金钟藤始花期、开花数目、花期长短，并与其结实率进行相关性比较，发现金钟藤始花期和开花数目与结实率无显著相关性，而金钟藤花期长短与结实率呈显著负相关性（花期越长，结实率越低），且开花较多，但果实、种子极少，种子繁殖力低。

In order to study biological characteristics of Merremia boisiana, this research measured the growth rate of branches of Merremia boisiana surveyed time of flowering onset, flowering duration and inflorescence number of Merremia boisiana. Besides, the study also detected respective correlations between flowering time, flowering duration, inflorescence number and fruit set. Themain results are as follows： （1） In the growing season, the average growth rate of branches reached 0.43-3.3cm/d, with maxima at 7.8cm/d. Moreover, strong branches can produce new side branches. Thus, Merremia boisiana has high rate of vegetative growth. （2） No significant relations were detected between initiation time of flowering, inflorescence number and fruit set. However, fruit sets was negatively correlated with the flowering duration （that is to say： the longer flowering duration, the lower the fruit set） at population level. Moreover, there were lots of flowers but few fruits and seeds, and Merremia boisiana has a slow rate of reproductive growth.