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首页> 外文期刊>Ботанический журнал >Embryological research on interspecific hybrids of Panicum miliaceum X P. coloratum (Poaceae).
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Embryological research on interspecific hybrids of Panicum miliaceum X P. coloratum (Poaceae).

机译：Panicum miliaceum X P. coloratum（禾本科）种间杂种的胚胎学研究。

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The development of hybrid embryos from the cross Panicum miliaceum X P. coloratum is highly variable for size and rate. Endosperm degeneration and the inability of embryos to differentiate result in death of hybrid seeds under natural conditions. This paper shows that these problems can be easily overcome by excising immature hybrid embryos 8-10 days after pollination and culturing them in vitro. It was observed that in interspecific hybrid plants flower bracts failed to open at anthesis. As a result, cross pollination was impossible. However, the problem was partially overcome by treating flowers with NAA and gibberellic acid solutions. In most cases interspecific hybrids showed virtually total pollen sterility (98-100%), although 3 lines with upto 10-15% pollen fertility were isolated.
机译：来自十字Panicum miliaceum X P. coloratum的杂种胚的发育在大小和速率上都高度可变。胚乳变性和胚胎无法分化导致自然条件下杂交种子死亡。本文表明，通过授粉后8-10天切除未成熟的杂种胚胎并进行体外培养，可以轻松解决这些问题。观察到在种间杂种植物中，花片在花期不能打开。结果，不可能进行异花授粉。但是，通过用NAA和赤霉素溶液处理花朵可以部分解决该问题。在大多数情况下，种间杂种表现出几乎完全的花粉不育性（98-100％），尽管分离出了3个花粉育性高达10-15％的品系。

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