花龄对蓝莓柱头可授性及花粉活力的影响

以南高丛蓝莓＂蓝雨＂（Vaccinium australe）为试材,研究了花龄对柱头可授性和花粉活力的影响。结果表明,蓝雨蓝莓雌雄性器官的育性具有同步性。从花后第1～5天花粉活力都较高,特别是花后第2～4天,花粉活力保持在50%以上,是人工辅助授粉收集花粉的良好时期;花后第2～4天柱头分泌黏液较多,此期柱头具有较强可授性,是开展人工辅助授粉的最佳时期。 The relationship of flower age to stigma receptivity and pollen viability of ＂Lanyv＂ blueberry was investigated. Results showed that the development of male and female organs is synchronous, which favors pollination and fruit set. Pollen viability reaches a relatively high level 1-5 days after flower opening. The peak pollen viability period is from 2d to 4d after flowering when more than 50%of the pollens are capable of germination. This period should he the best time to collect pollen. Similarly the stigma receptivity reaches the highest point 2d to 4d after flower opening on which it should be the best time to do artificial pollination.