LI Min,LIU Ming-guo,WU Yue-liang,et al.Study on Conditions of Pollen Culture in vitro and Growth Dynamic of Pollen Tube in Prunus sibirica[J].Northern Horticulture,2015,39(07):81-84.[doi:10.11937/bfyy.201507025]
山杏花粉离体培养条件及花粉管生长动态研究
- Title:
- Study on Conditions of Pollen Culture in vitro and Growth Dynamic of Pollen Tube in Prunus sibirica
- Keywords:
- boric acid concentration; sampling method; pollen germination rate; pollen tube growth; Prunus sibirica
- 文献标志码:
- A
- 摘要:
- 以山杏优良无性系为试材,采用花粉离体培养的方法,研究了山杏花粉离体培养条件对花粉萌发率的影响、不同采样方式对花粉萌发率的影响和花粉管的发育过程,旨在为了解和控制山杏授粉受精过程提供参考依据。结果表明:当蔗糖、琼脂浓度为10.0% 和0.5% 时,0.010%的硼酸浓度最适合山杏花粉离体培养。室内水培花枝取样的花粉活力显著低于野外自然开花取样的花粉活力,在相关科研和生产实践中,应尽量缩短室内水培时间或从野外自然开花中获得花粉。不同山杏无性系的花粉活力差异明显。山杏花粉管在培养基中生长可以划分为4个时期:花粉萌发期(0.3~0.6 h),快速生长期(0.6~2.0 h),生长速度缓慢期(2.0~4.0 h)和生长停滞期(4.0 h以后)。
- Abstract:
- Taking excellent clones of Prunus sibirica as test material, using the method of pollen culture in vitro,the effect of in vitro culture on pollen of Prunus sibirica,different ways of sampling effect on pollen germination rate and the process of pollen tube growth were studied,in order to provide the scientific basis for understanding and controlling of the pollination and fertilization of the tree species. The results showed that, when the concentration of sucrose was 10.0% and the agar was 0.5%,the boric acid concentration of 0.010% was the most suitable for pollen culture in vitro. The pollen vitality of indoor hydroponic flower sampling was significantly lower than the pollen of outdoor natural flower sampling,which meant that in the relevant scientific research and production practice, try to shorten the indoor hydroponic time or obtain pollen from the natural blossom in field. Different Prunus sibirica clones had evidently different pollen viability.The growth process of pollen tubes in culture could be divided into four periods: pollen germination period (0.3-0.6 hours), rapid growth period (0.6-2.0 hours), slowing growth period (2.0-4.0 hours) and growth lag phase (after 4.0 hours).
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备注/Memo
第一作者简介:李民(1989-),女,新疆奎屯人,硕士研究生,研究方向为森林培育。E-mail:lm1449853120@163.com. 责任作者:刘明国(1964-),男,辽宁朝阳人,博士,教授,现主要从事森林培育和经济林等研究工作。E-mail:liumingguo916@163.com. 基金项目:国家林业公益性行业科研专项资助项目(201004034)。