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Effect of Culture Condition on Pollen Germination of Weigela florida

LI Fan(College of Horticulture,Northeast Agricultural University,Harbin,Heilongjiang 150030)  
Pollens of Weigela florida were taken as experiment materials.Effect of temperature,sucrose density,mineral nutrition,plant growth regulator,culture time and collect time on pollen germination of Weigela florida were studied.Result showed that pollen germination of Weigela florida was remarkably promoted under the condition of 40 mg/L Ca2+.Relatively high or low density restrained pollen germination.40~80 mg/L B,5~10 mg/L NAA or 20~40 mg/L GA obviously promoted the pollen germination,respectively.15 % sucrose density and 25 ℃ temperature were advantageous to the germination of pollens.In the same day,the viability of pollens gathered in the morning was better and pollen germination rate was higher than in other times.
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