Pollen Viability and Stigma Receptivity of Scilla scilloides
The experiment was conducted to study pollen and stigma morphology,pollen viability and stigma receptivity of Scilla scilloides in Changbai Mountains,China.The relationships between pollen viability,stigma receptivity and pollination success were also analyzed.The anther of Scilla scilloides started cracking when exposed in air after 20 to 40 min.S.scilloides was single pollen with one germination ditch.The best medium for pollen germination was ME3+ 10 g · L-1 Sucrose+0.3 g · L-1 H3BO4+0.2 g · L-1 Ca(NO3)2.Pollen viability was about 80％ at initial time of florescence and the full flowering period,but the value was only about 20％ at the end of florescence.Survival time of pollen is 3 d at 4 ℃.The value is 2 d at 25 ℃,and 1 d at 35 ℃.Stigma had receptivity ability before anthers loose powder and stigma receptivity was strongest after flowering 1-2 d.Effective pollen and stigma can have 1-d meeting period,but during the period of stigma receptivity is not very strong which provides the opportunity for cross-pollination.
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万方数据
维普
