Molecular marker linked to the rb1 gene and association with pre-harvest sprouting tolerance in wheat

Authors

  • Kelly Pellizzaro Universidade Federal do Rio Grande do Sul
  • Alessandro Lucca Braccini Universidade Estadual de Maringá
  • Elisa Serra Negra Vieira Empresa Brasileira de Pesquisa Agropecuária,
  • Francisco de Assis Franco COODETEC Desenvolvimento Produção e Comercialização Agrícola Ltda
  • Volmir Marchioro COODETEC Desenvolvimento Produção e Comercialização Agrícola Ltda
  • Ivan Schuster Dow Agroscience

DOI:

https://doi.org/10.14393/BJ-v32n4a2016-30229

Keywords:

Triticum aestivum L., Molecular marker, Grain color, Dormancy

Abstract

The objective of this study was to identify microsatellites molecular markers linked to R genes, that confer the wheat grain color and evaluate the association with pre-harvest sprouting tolerance. This study was conducted with a F2 population with 203 plants, derived from the cross between PFAU x CD0666 genotypes, which segregates for one grain color gene. Were analyzed 43 molecular markers located in regions that containing R genes on 3B and 3D chromosomes. The Xbarc344 molecular marker was identified as linked to the R gene at a distance of 26.1 cM with 83.25% of selection efficiency. From the phenotypic analysis was confirmed the association between grain color with Xbarc344 molecular marker, however, there was no association between Xbarc344 with pre-harvest sprouting tolerance. Also, there was no association between grain color with pre-harvest sprouting tolerance. Although the grain color in wheat is a trait easy to select, it is known that not all R genes are involved with pre-harvest sprouting tolerance. Therefore, it is important the genetic mapping and specific evaluation of each R gene with pre-harvest sprouting tolerance. Thus, the molecular markers identified as associated with each R gene can be used to select plants that contain such genes, since it is not possible to identify phenotypically which R gene each plant has.

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Published

2016-07-08

Issue

Section

Agricultural Sciences

How to Cite

Molecular marker linked to the rb1 gene and association with pre-harvest sprouting tolerance in wheat . Bioscience Journal [online], 2016. [online], vol. 32, no. 4, pp. 908–914. [Accessed3 April 2025]. DOI 10.14393/BJ-v32n4a2016-30229. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/30229.