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首页> 外文会议>Industrialization of Hybrid Rice >Breeding and Utilization of New Cytoplasmic Male Sterile Line from New Cytoplasmic Source Dongxiang Wild Rice
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Breeding and Utilization of New Cytoplasmic Male Sterile Line from New Cytoplasmic Source Dongxiang Wild Rice

机译：新型细胞质来源东乡野生稻的新型细胞质雄性不育系的选育与利用

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By hybridizing and multiple crossing the plant of Dongxiang wild rice and the cultivated variety rice, and continually backcrossing between the male sterile plants of the progeny and the cultivated variety rice, two different male sterile types have been bred after their cell nucleus finally were replaced many progenies: One is anther-degenerated abortion type: Its anther is thin, degenerated, hamate crooked and white. By iodine-iodine of potassium dying and microscopic examining, typical aborted pollen grains are very few, by test -crossing with wild aborted type of R-line, the first filial generation appears completely sterile and by test -crossing with close affinity material its restorable degree is improved, but no heterosis, such as Dong B_(51)A, Dong Pei A, Dong R 4005A and Dong 3037A etc. The other is typical abortion type, anther is fatter, milky white and water stained, by iodine-iodine of potassium dying and microscopic examining, typical aborted pollen grains are many, round aborted pollen grains are very few, its restore spectrum is very extensive , such as Dong B_(11) A. But we have separated the typical abortion type of CMS line from anther-degenerated a-bortion type of one, and we have analyzed the phenomenon. Dong B_(11)A has already been technically indentified and authenticated in our province, its major morphogical and biological characteristics have been interpreted, its combining ability and heterosis in exploition have been tested, a plenty of better and newer combinations have been selectively bred after widely test - crossing, such as Dongyou 13, Dongyou 952 and Dongyou C 218 ect.
机译：通过将东乡野生稻和栽培稻的杂交和杂交，再使子代雄性不育植株和栽培水稻连续回交，在最终取代了许多细胞核后，又培育出了两种不同的雄性不育类型。后代：一种是花药退化的流产型：它的花药稀薄，退化，具弯曲弯曲的白色。通过钾的碘碘化和显微检查，典型的流产花粉粒很少，通过与野生流产的R系交配，第一代子代显得完全不育，并且通过与亲和力密切的交配材料交配，可恢复程度提高了，但没有杂种优势，例如Dong B_（51）A，Dong Pei A，Dong R 4005A和Dong 3037A等。另一种是典型的流产类型，花药更胖，乳白色并且被碘染色从钾的垂死和显微检查的角度来看，典型的流产花粉粒很少，圆形的流产花粉粒很少，其恢复谱非常广泛，例如Dong B_（11）A。花药退化的流产类型之一，我们对此现象进行了分析。 Dong B_（11）A已在我省进行了技术鉴定和鉴定，已解释了其主要形态和生物学特性，已测试了其结合能力和杂种优势，并在开发后选择了许多更好和更新的组合广泛测试-穿越，例如Dongyou 13，Dongyou 952和Dongyou C 218等。

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