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首页> 外文期刊>Agricultural Science & Technology Newsletter >Increasing yield potential of hybrid rice through molecular breeding.
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Increasing yield potential of hybrid rice through molecular breeding.

机译：通过分子育种提高杂交水稻的产量潜力。

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摘要

The testcross F1 of V20A/rufipogon//V20B///V20B/Ce64 was backcrossed 3 times with Ce64, one of the best restorers used in Chinese hybrid rice. After several generation advancement based on molecular marker analysis and field selection, one promising family (Q611) was developed, which is of very high grain weight per panicle and very strong heterosis when it comes to their hybrids. The results of yield trials in Hunan, China and marker analysis showed that the 2 yield-enhancing genes, yld1.1 and yld2.1, from Oryza rufipogon were successfully transferred into currently elite hybrids based on marker-assisted selection, which raised the heterosis level to a large extent and significantly increased the yield potential in Chinese hybrid rice..
机译：将V20A / rufipogon // V20B /// V20B / Ce64的测试杂交F1与Ce64回交3次，Ce64是中国杂交水稻中使用的最佳还原体之一。经过基于分子标记分析和田间筛选的数代进步，开发了一个很有前途的家族（Q611），该家族的每穗粒重非常高，杂种优势很强。在中国湖南进行的产量试验和标记分析结果表明，基于标记辅助选择，来自稻米的两个提高产量的基因yld1.1和yld2.1已成功地转移到目前的优良杂种中，从而提高了杂种优势。的水平在很大程度上提高了杂交水稻的产量潜力。

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