苹果梨授粉花粉的萌发以及花粉管的行为

The germination of pollination pollen and embryogenesis in apple-pear

本试验采用以鸭梨为主的混合花粉、谢花甜花粉、鸭梨花粉和苹果梨树为试材 ,观察了花粉在苹果梨柱头上的萌发以及花粉管在花柱内的生长情况 .结果表明 :混合花粉在苹果梨柱头上大约 2h开始萌发 ,谢花甜花粉和鸭梨花粉在苹果梨柱头上大约 4h才开始萌发 ;1 0h花粉管开始伸入柱头 ,2 4h大部分花粉管进入到花柱上部 ;36h时大部分花粉管已进入花柱中部 ;5 6h开始有部分花粉管到达子房 ;72～ 96h大部分花粉管穿过子房 。

The experiment by observed pollen germination and pollen tube growth in style.Mixed pollen,XieHuaTian pear′s pollen,YaLi pear′s pollen and apple pear tree were all used in the experiment.Main results were followed: It was about 2 hours that mixed pollen germinated on the stigma,but XieHua Tian pear′s pollen and YaLi pear′s pollen were 4 hours; it took 10 hours that pollen tube began to go into the stigma,most of pollen tube went into the style′s upper after 24 hours; it went into the style′s middle after 36 hours,then it went into the ovary after 56 hours.It was 72～96 hours that most of pollen tube acrossed the ovary and finished the course of pollination and fertilization.