常海龙1,2,张垂明1,2,张 伟1,2,陈俊吕1,2,邱永生1,2,
周 峰1,2,吴其卫1,2,王勤南1,2.甘蔗花粉活力和柱头可授性日变化研究[J].广东农业科学,2017,44(4):14-18 |
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甘蔗花粉活力和柱头可授性日变化研究 |
Study on diumal variation of sugarcane’s pollenvitality and stigma energy |
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DOI:10.16768/j.issn.1004-874X.2017.04.003 |
中文关键词: 甘蔗 散粉量 花粉活力 柱头可授性 |
英文关键词: sugarcane pollen grains pollen vitality stigma energy |
基金项目:现代农业产业技术体系建设专项(CARS-20-1-6);广东省科技计划项目(2013B020311002,
2014A030305002,2014A030304027,2015A030303005,2015A030302033);广东省科学院科研平台环境能力建设专项
(2016GDASPT-0306) |
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中文摘要: |
为探明造成甘蔗花穗杂交结实率低的原因,以多花粉ROC22、科五和自交不育系粤糖
92-1287、桂糖96-211 为试材,对其散粉量、花粉活力及柱头可授性日变化进行研究。结果表明,甘蔗开花
散粉集中在7:30~8:30,随时间推移花粉活力逐渐降低,13:00 后完全丧失活性;在0℃干燥条件下,适
于花粉短期贮存;柱头全天都具有可授性,高温会影响柱头可授性。甘蔗最佳授粉时间为8:00~8:30,此
时花粉活性较好,柱头可授性最强,花粉量充足。 |
英文摘要: |
In order to investigate the reason of low ripening rate of sugarcane flowers hybrid,Roc22,K5 and
self-sterility,such as YT 92-1287,GT 96-211 were used to study the diumal variation of pollen grains,pollen
vitality and stigma energy. The results showed that sugarcane flowered powder between 7:30 and 8:30,then the
pollen vitality gradually reduced,completely lost activity after 13:00. The pollen was easily inactivated with rapid
dehydration and drying under 0℃ was working for pollen viability in short-term. Stigma could be granted within a day
and was affected by high temperature. The best time to pollinate depended largely on pollen activity,8:00-8:30
was the point of sugarcane,meanwhile the stigma could give the most and abundant pollen with high vitality. |
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