不同蔗糖浓度对高山红景天花粉发芽率及花粉管生长的影响

以高山红景天的花粉为试验材料,研究不同蔗糖浓度的培养基对花粉发芽率及花粉管生长的影响.结果表明:不同发育时期的单性花花粉适合发芽的蔗糖浓度基本一致,蔗糖浓度为100 g/L时花粉发芽率最高;单性花和两性花花粉管适宜生长的蔗糖浓度不同,单性花在较低的蔗糖浓度时花粉管伸长较长,其适合的蔗糖浓度为0～50 g/L,两性花在50～150 g/L蔗糖浓度下花粉管伸长较长.

Effect of the different sucrose concentration on the rate of pollen germination and the growth of pollen tube of Rhodiola sachalinensis

The effect of medium supplymented with different sucrose concentration on the rate of pollen germination and the growth of pollen tube was studied using pollen of Rhodiola Sachalinensis as the materal of this experiment. The results showed that the sucrose concentration was suitable for the pollen germination of the unisexual flower at the different stage of development was the same basically, the rate of germination was the highest when the sucrose concentration was 100 g/L, the sucrose concentration that was suitable for the growth of the pollen tube of unisexual and bisexual flower was different, the pollen tube of unsexual flower could stretch longer at lower sucrose concentration realtively, its suitable sucrose concentration was 0-50 g/L, the pollen tube of bisexual flower could stretch longer when the sucrose concentration was 50-150 g/L.