青杆云杉花粉生命力的测定与分析

以青杆云杉新鲜花粉为试验材料，在含有蔗糖和硼酸的固体培养基上作生命力测定，结果表明：当培养基中蔗糖质量浓度为5％时，花粉萌发数量最多，生命力为95．9％，是质量浓度为20％的6．5倍，对高含量的蔗糖十分敏感。当培养基中硼酸质量浓度为0．03％时，花粉萌发数量最多，生命力为88．3％，较质量浓度为0．07％的生命力高出18．2个百分点；与蔗糖相比较，对硼酸含量表现得不十分敏感。

Measurement and analysis of pollen vitality of Picea wilsonii Mast.

Fresh pollen of Picea wilsonii Mast. was taken as test material to measure vitality by using solid medium with sucrose and boric acid, it turned out that when sucrose concentration was 5% ,there was the largest number of pollen germination, viability was 95.9%, was 6. 5 times than sucrose concentration of 5%, was sensitive to high levels of sucrose, when boric acid concentration was 0.03 %, there was the largest number of pollen germination, viability was 88.3%, was 18.2 percent point than boric acid concentration of 0.07%, was not very sensitive to boric acid.