Genetic analysis of fertility-restorer genes in rice |
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Authors: | Y P Tan S Q Li L Wang G Liu J Hu Y G Zhu |
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Institution: | (1) Key Laboratory of MOE for Plant Developmental Biology, College of Life Science, Wuhan University, 430072 Wuhan, P.R. China |
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Abstract: | Wild-abortive (WA), Honglian (HL) and Baro-II (BT) are three important cytoplasmic male sterility (CMS) types in rice. It
is essential to investigate genetic mode and allelism of fertility restorer (Rf) genes and the relationship between Rf and CMS. Fertility of the all test-cross F1 plants shows that the restorer-maintainer relationship is similar for HL-CMS and BT-CMS, while that is variance for WA-CMS
and HL-CMS (or BT-CMS), respectively. Genetic analysis of Rf genes indicates that HL-or BT-CMS are controlled by single dominant Rf gene and WA-CMS is controlled by one or two pairs of dominant Rf genes, which reflects the characters of the gametophytic and sporophytic restoration CMS type. It is concluded that there
are at least three Rf loci in different accessions with Rf genes for each CMS type. |
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Keywords: | Additional" target="_blank">Additional allelism test cytoplasmic male sterility Oryza sativa L |
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