Genetic analysis of the Aegilops longissima 3S chromosome carrying the Pm13 resistance gene

被引：12

作者：

Cenci Alberto

D'Ovidio Renato

Tanzarella Oronzo Antonio

Ceoloni Carla

Pasquini Marina

Porceddu Enrico

机构：

[1] Dipto. Biol. Chim. Agroforestale A., Università di Bari, Bari

[2] Dipto. di Agrobiologia e Agrochimica, Università della Tuscia, Viterbo

[3] Ist. Sperim. per la Cerealicoltura, Rome

来源：

Euphytica | 2003年 / 130卷 / 2期

关键词：

Aegilops longissima; Pm13; Powdery mildew; Resistance gene; Wheat;

D O I：

10.1023/A:1022873822114

中图分类号：

学科分类号：

摘要：

The distal region of the short arm of chromosome 3S from Aegilops longissima, which carries the powdery mildew resistance gene Pm13, was introgressed into common wheat. Due to suppression of recombination between this region and corresponding wheat homoeologous segments, a possible strategy to construct a genetic map around the Pm13 gene was based on crosses between a wheat addition line carrying the Ae. longissima 3S chromosome and the corresponding 3S addition lines of Ae. searsii and Ae. variabilis. The efficiency of this strategy was evaluated by scoring recombination frequencies in progenies derived from these crosses. Recombination between 3S chromosomes from Ae. searsii and Ae. longissima was very low, whereas 26.5% recombinant alien chromosomes were obtained from the cross involving the Ae. variabilis and Ae. longissima 3S addition lines. These data were used to construct a 3S chromosome map that resulted largely colinear to the consensus map of the homoeologous group 3 of wheat.

引用

页码：177 / 183

页数：6

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