Genetic and cytological analysis of a new spontaneous male sterility in radish (Raphanus sativus L.)

文献类型： 外文期刊

第一作者： Wang, Zhi-Wei

作者： Wang, Zhi-Wei;Gao, Lei;Zhou, Yuan;Wang, Ting;Wang, Zhi-Wei;Xiang, Chang Ping;Liu, Hai Zhou;Mei, Shi Yong

作者机构：

关键词： abnormal development;abnormalities;agricultural sciences;anthers;breeding programmes;cytology;cytoplasmic male sterility;DNA;genes;genetic markers;hybrids;linkage;male sterility;molecular genetics;plant breeding;polymerasechain reaction;progeny;radishes;sterility;plants;Raphanus;Raphanus sativus;APEC countries;Developing Countries;East Asia;Asia;Central Southern China;China;eukaryotes;Brassicaceae;Capparidales;dicotyledons;angiosperms;Spermatophyta;plants;Raphanus.

期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）

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年卷期：

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收录情况： SCI

摘要： A male sterile plant appeared in the radish breeding program at the Hubei Academy of Agricultural Sciences, Hubei, China. In its progeny, a two-type (half of plants male sterile, the other half male fertile) line 01GAB was established. An F-2 population of 260 plants from a cross of male-sterile 01GAB and a male fertile line 9802H segregated for male fertility in a 3:1 ratio indicating that fertility was restored by a single dominant gene, here designated RsMs. A PCR-based DNA marker specific to the male fertility Rfob gene in 9802H was absent in 01GAB. Linkage analysis placed the RsMs locus 10.7 cM away from the Rfo locus. In an F-2 population of hybrids between 01GAB and male fertile 9802B, a co-dominant DNA marker for the RSultr3.2A (a radish sulfate transporter gene) locus was linked to the RsMs locus at 1.5 cM suggesting that fertility restoration in 01GAB was located in the region with known male sterility restorers in radish. However, no maintainer for the 01GAB source of male sterility has been identified so far. Cytological observations have shown that the abnormalities in male sterile anthers first appeared in tapetum at the tetrad stage, followed by a hypertrophy of the tapetal cells at the vacuolate microspore period. These results suggest that male sterility in 01GAB is likely to be genetic in nature, or it may represent a new type of the cytoplasmic male sterility.

分类号： S3

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