朱顶红鳞茎仔球与鳞片的关系研究

Research on the relation between bulblets and scales of Hippeastrum vittatum bulbs

为研究朱顶红仔球产生的位置和仔球与母球鳞片的关系,对朱顶红鳞茎进行了解剖。结果发现:在朱顶红母球上叶芽和花芽同方向的位置仔球产生率为95.1%,在母球上与这个方向成45°角的仔球率为2.94%,成90°角仔球率为1.96%。说明母球上这个位置更容易分生仔球。在鳞茎中0层鳞片上仔球率为31.81%,内1层鳞片上为40.90%,内2—5层为6.81%。鳞茎内1层仔球产生率最高。对带仔球的鳞茎数据进行回归分析,结果显示仔球直径(y)和鳞茎层数(x)之间的回归线性关系显著,回归方程为y=0.244x+1.521(R^2=0.512)。

In order to study the position of bulblets growth and the relationship between bulblets and scales of mother bulb, the experiments of anatomy bulb were carried out in the Hippeastrurn vittatum in the mother bulb. The result showed that the production rate of bulblets is 95.1% in the location where buds and flower bud in the same direction. In mother bulb located in 45° and 90° deviating from this di- rection, the production rate of bulblets are 2.94% and 1.96 %,respectively. This indicates that bulblets are easier to produce in this position of mother bulb. The production rate of bulblets is 6.81% in the 0 layer of scale, 40. 90% in minus 1 later, 6.81% in minus 2-5 layer. Obviously, the production rate of bulblets is the highest in minus 1 layer. The percentage is 6.81% in minus 2-5 layer, the production rate of bulblets is the highest. The bulb data were carried out regression analysis. There is significant positive correlation between diameter of bulblets（y）and layers of scales（x）. The gression relation is ex- pressed as following y= 0. 244x＋ 1. 521（R2= 0. 512）.