Two major recessive soybean genes conferring soybean rust resistance

被引：49

作者：

Calvo, Eberson S. ^{[1
]}

Kiihl, Romeu A. S. ^{[1
]}

Garcia, Alexandre ^{[1
]}

Harada, Arlindo ^{[1
]}

Hiromoto, Dario M. ^{[2
]}

机构：

[1] Trop Melhoramento & Genet Ltda, BR-86183600 Cambe, PR, Brazil

[2] Fundacao MT, Fundacao Apoio Pesquisa Agropecuaria Estado Mato, BR-78750000 Rondonopolis, MT, Brazil

来源：

CROP SCIENCE | 2008年 / 48卷 / 04期

关键词：

D O I：

10.2135/cropsci2007.10.0589

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Soybean rust (SBR) caused by Phakopsora pachyrhizi Syd. is currently the most threatening fungal disease of soybean [Glycine max (L.) Merr.] in the Americas. Development of resistant or tolerant cultivars is a major goal in several soybean breeding programs. Four loci, all carrying dominant alleles that confer a resistant phenotype, have been described. We investigated the genetic basis of the resistance in PI 200456 and PI 224270 by crossing each of them with a susceptible cultivar (CD 208). Phenotypic segregation ratios for F-2 plants and F-2.3 lines showed that the resistance in each resistant parent was controlled by a single recessive gene. A test for allelism demonstrated that these genes are non-allelic. This is the first report of recessive genes controlling SBR resistance in soybean and may represent a different type of resistance for breeding programs aimed at development of more durable resistance.

引用

页码：1350 / 1354

页数：5

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