Molecular markers associated with aluminium tolerance in Sorghum bicolor .

Autor: Too EJ; 1Department of Biological Sciences, University of Eldoret, P.O. Box 1125-30100, Eldoret, Kenya., Onkware AO; Rongo University College, P.O. Box 103-40404, Rongo, Kenya., Were BA; 1Department of Biological Sciences, University of Eldoret, P.O. Box 1125-30100, Eldoret, Kenya., Gudu S; Rongo University College, P.O. Box 103-40404, Rongo, Kenya., Carlsson A; 3Department of Plant Breeding, Swedish University of Agricultural Sciences, P.O. Box 101, SE-230 53 Alnarp, Sweden., Geleta M; 3Department of Plant Breeding, Swedish University of Agricultural Sciences, P.O. Box 101, SE-230 53 Alnarp, Sweden.
Jazyk: angličtina
Zdroj: Hereditas [Hereditas] 2018 Apr 13; Vol. 155, pp. 20. Date of Electronic Publication: 2018 Apr 13 (Print Publication: 2018).
DOI: 10.1186/s41065-018-0059-3
Abstrakt: Background: Sorghum ( Sorghum bicolor , L. Moench) production in many agro-ecologies is constrained by a variety of stresses, including high levels of aluminium (Al) commonly found in acid soils. Therefore, for such soils, growing Al tolerant cultivars is imperative for high productivity.
Methods: In this study, molecular markers associated with Al tolerance were identified using a mapping population developed by crossing two contrasting genotypes for this trait.
Results: Four SSR ( Xtxp34 , Sb5_236 , Sb6_34 , and Sb6_342 ), one STS ( CTG29_3b ) and three ISSR ( 811_1400 , 835_200 and 884_200 ) markers produced alleles that showed significant association with Al tolerance. CTG29_3b, 811_1400 , Xtxp34 and Sb5_ 236 are located on chromosome 3 with the first two markers located close to Alt SB , a locus that underlie the Al tolerance gene ( SbMATE ) implying that their association with Al tolerance is due to their linkage to this gene. Although CTG29_3b and 811_ 1400 are located closer to Alt SB , Xtxp34 and Sb5_236 explained higher phenotypic variance of Al tolerance indices. Markers 835_200 , 884_200 , Sb6_34 and Sb6_342 are located on different chromosomes, which implies the presence of several genes involved in Al tolerance in addition to S bMATE in sorghum.
Conclusion: These molecular markers have a high potential for use in breeding for Al tolerance in sorghum.
Competing Interests: The authors declare that they have no competing interests.Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje