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

How to Cite

PELLIZZARO, K., LUCCA BRACCINI, A., SERRA NEGRA VIEIRA, E., DE ASSIS FRANCO, F., MARCHIORO, V. and SCHUSTER, I., 2016. Molecular marker linked to the rb1 gene and association with pre-harvest sprouting tolerance in wheat . Bioscience Journal [online], vol. 32, no. 4, pp. 908–914. [Accessed7 December 2022]. DOI 10.14393/BJ-v32n4a2016-30229. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/30229.

Issue

Section

Agricultural Sciences