56染色体玉米-三杂交的阿波米克特的发展:在异质化固定的一个潜在的突破
Viktor Andreevich Sokolov1, Pavel Alexandrovich Panikhin1,2, Kirill Olegovich Plotnikov3
1Laboratory of Plant Cytology and Apomixis, Institute of Molecular and Cell Biology, Siberian Branch of the Russian Academy of Sciences, Academician Lavrentyev Avenue, 8/2, 630090 Novosibirsk, Russia.
Plants (Basel, Switzerland)
|August 10, 2024
概括
科学家们通过将玉米与东方草交叉来创造了新的玉米杂交. 这些无菌杂交物无性繁殖,有可能降低与这种重要的谷物作物的杂交种子生产相关的成本.
科学领域:
- 植物遗传学 植物遗传学
- 农作物科学 农作物科学
- 生殖生物学 生殖生物学
背景情况:
- 玉米 (Zea mays L.) 产量每年超过10亿,这是由遗传潜力和F1杂交的推动.
- 每年生产F1杂交玉米种子在经济上是昂贵和具有挑战性的.
- 无性繁殖 (apomixis) 为降低种子生产成本提供了一个潜在的解决方案.
研究的目的:
- 通过将东方草 (Tripsacum dactyloides L.) 的无性繁殖转移,开发出阿波米克特玉米杂交.
- 为了确认产生的杂交品的繁殖模式和型.
- 评估这些杂交品种作为料作物的潜力.
主要方法:
- 玉米的生产 x 56 个染色体的东方草杂交.
- 通过染色体计数证实了apomixis.
- 核Pox3和叶绿体trnL基因的基因测序,以验证杂交起源和繁殖模式.
主要成果:
- 成功地产生了 56 个染色体的玉米 (Zea mays L.) 和东部草 (T. dactyloides L.) 的异构杂交.
- 在由此产生的杂交物中恢复了的生育能力.
- 确认的杂交型: 2n = 56 = [ 10Zm 573MB) + 36Td) + 10Zm 611CB) ]和2n = 56 = [ 10Zm 611CB) + 36Td) + 10Zm 611CB).
结论:
- 成功地创造了具有恢复生育能力的apomictic玉米杂交品种.
- 这些杂交品为克服F1杂交种子生产的经济挑战提供了潜在的途径.
- 开发的杂交品种有望作为料作物广泛使用.
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