Morphological and anatomical analyses of a floral organ mutant in rice

文献类型： 外文期刊

第一作者： Zhu, LH

作者： Zhu, LH;Xie, R;Xie, C;Jin, L

作者机构：

关键词： rice;floral organ;B loss-of-function;mutant

期刊名称：ACTA BOTANICA SINICA （ 影响因子：0.599； ）

ISSN： 0577-7496

年卷期： 2000 年 42 卷 4 期

页码：

收录情况： SCI

摘要： A spontaneously occurred rice ( Oryza sativa L.) mutant characterized by homeotic conversions in glumes and stamens was found in the progeny of a breeding material. The mutant plant shows degenerated glumes and morphological transformation of stamens into pistils. A mutant floret consists of 1 to 3 completely developed pistils and 4 to 6 incomplete pistils with no ovary. Some pistilloid stamens still have filaments but tipped by bulged tissue and 0 to 3 stigmas. Three ovaries in a single floret were observed in its cross and longitudinal sections. When the mutant plants were pollinated with pollens from wild type plants, one or two naked seeds instead of a caryopsis could be produced in a single floret. The mutant is controlled by a single recessive gene since its Fl hybrid plants were restored to wild type and 3:1 ratio of wild type to mutant plants were observed in the progeny of heterozygotes, It seems that the mutant phenotype of the homeotic conversions in glumes and stamens is similar to that of the B loss-of-function mutants in Arabidopsis and Antirrhinum.

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