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首页> 外文期刊>Chinese science bulletin >Breeding of wheat male sterile line with Aegttops crassa (6x) cytoplasm and research of its characters
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Breeding of wheat male sterile line with Aegttops crassa (6x) cytoplasm and research of its characters

机译：小麦Aegttops crassa（6x）细胞质不育系的选育及其特性研究

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Since Wilson and Ross (1962) bred wheat male sterile line with T. timopheevi cytoplasm (G type) and its relative restoration line, with high utilization value, the progress has been accelerated in research of heterotic use of wheat male sterility. Butso far they have not been used in large area production, because of the limited restorer resource, imperfect grains and insignificant population heterosis. Aegilops kotschyi and Ae. Variabilis types/ (S~v type) overcame well some problems in G type, such as restorer resource, grain plumpness etc., but at the same time, other more difficult problems arose, e. g. their sterile line and hybrid F_1 generation produced monoploids at a certain rate, hybrid growth was weak and restorer degree of sterility hada large variation scale. The stability of sterility in Ae. Ventricosa (D type) and Ae uniaristata (M~u type) cytoplasms, as well as the maintenance and restoration of their male sterile lines were further studied. In order to accelerate the progress inresearch of wheat heterotic use, it is necessary to find out a new resource of male sterile cytoplasm. The research on male sterile lines having D~2 (Ae. crassa 6x, etc), G, M~u and S~v type cytoplasms and their heterotic uses considered by Tsunewaki etal. was of great useful value. Some experiments proved that D~2 type cytoplasm had a better effect on important agronomic characters of wheat than other male sterile cytoplasm. It has been reported that D~2 type was photoperiod-sensitive cytoplasmic male sterile type.
机译：自Wilson and Ross（1962）育成具有T. timopheevi细胞质（G型）的小麦雄性不育系及其相对恢复系以来，由于具有较高的利用价值，异种利用小麦雄性不育性的研究有了加速的进展。但是到目前为止，由于恢复资源有限，谷物不完美和种群杂种优势不明显，它们尚未用于大面积生产。 Aegilops kotschyi和Ae。变异型/（Sv型）很好地克服了G型的一些问题，例如恢复资源，谷物丰满度等，但是同时，还出现了其他更困难的问题，例如。 G。它们的不育系和杂种F_1代以一定的速率产生单倍体，杂种生长较弱，恢复性不育程度变异幅度较大。在Ae中无菌的稳定性。研究了Ventricosa（D型）和Ae uniaristata（Muu型）细胞质及其雄性不育系的维持和恢复。为了加快小麦杂种优势利用的研究进展，有必要寻找一种新的雄性不育细胞质资源。 Tsunewaki等人研究了具有D〜2（Ae。crassa 6x等），G，M〜u和S〜v型细胞质的雄性不育系及其杂种用途的研究。具有很大的实用价值。一些实验证明，D〜2型细胞质对小麦重要农艺性状的影响优于其他雄性不育细胞质。据报道，D〜2型是对光周期敏感的胞质雄性不育型。

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