Competitive ability of breeds of leaf rust from of crystalline wheats

Authors

  • Julio Huerta Espino Campo Experimental Valle de México-INIFAP. Carretera Los Reyes-Texcoco km 13.5, Coatlinchán, Texcoco, Estado de México. Tel. 01 800 0882222, ext. 85355. CP. 56250
  • Ravi Singh Centro Internacional de Mejoramiento de Maíz y Trigo. Carretera México-Veracruz km 4.5, El Batán, Texcoco, Estado de México. CP. 56237
  • Héctor Eduardo Villaseñor Mir Campo Experimental Valle de México-INIFAP. Carretera Los Reyes-Texcoco km 13.5, Coatlinchán, Texcoco, Estado de México. Tel. 01 800 0882222, ext. 85355. CP. 56250
  • María Florencia Rodríguez García Campo Experimental Valle de México-INIFAP. Carretera Los Reyes-Texcoco km 13.5, Coatlinchán, Texcoco, Estado de México. Tel. 01 800 0882222, ext. 85355. CP. 56250
  • Ernesto Solís Moya Campo Experimental Bajío-INIFAP. Carretera Celaya-San Miguel Allende km 6.5, Celaya, Guanajuato. CP. 38000
  • Eduardo Espitia Rangel Campo Experimental Valle de México-INIFAP. Carretera Los Reyes-Texcoco km 13.5, Coatlinchán, Texcoco, Estado de México. Tel. 01 800 0882222, ext. 85355. CP. 56250

DOI:

https://doi.org/10.29312/remexca.v11i1.1763

Keywords:

competition between races, leaf rust races, monopostular isolates

Abstract

In the process of genetic improvement of wheat, the evaluation of genotypes for resistance to rusts is essential; often breeders must mix different races; however, it is essential to know the competitive hability of the rust, and the wheat genotype used for increase. The aim of the study was to measure the competitive ability of four-leaf rust races caused by Puccinia triticina E. attacking durum wheat (Triticum durum L.). The study was conducted in a greenhouse during the year 2015. Leaf rust races BBG/BN, BCG/BN, BBG/BP and CBG/BP, were proportionally mixed and multiplied for three successive generations in the susceptible genotypes (Atil C2001 and Morocco); resistant genotypes: (Samayoa C2004 and Thatcher-Lr16 (RL6005]) in addition to them Júpare C2001 resistant to BBG/BN and BCG/BN, but susceptible to BBG/BP and CBG/BP. After urediniospore multiplication, 100 single pustule isolates obtained were increased in the cultivar Morocco before proceeded to the race identification. The most frequently identified race was CBG/BP with 46%, followed by BBG/BP with 34% and BBG/BN with 18%. BCG/BN was the less frequent with 2%. Only among urediniospores composite mass (CM) obtained from RL6005 and Morocco allowed the identification of the four races; in Atil C2001, Júpare C2001 Samayoa C2004 allowed the identification of three. The race identified more frequently in Atil C2001, RL6005 and Samayoa C2004 was BBG/BP, while in Morocco and Júpare C2001, CBG/BP. It is concluded that CBG/BP is more competitive than BBG/BP, BBG/BN and BCG/BN and it is recommended to be used in the mixture.

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Published

2020-02-05

How to Cite

Huerta Espino, Julio, Ravi Singh, Héctor Eduardo Villaseñor Mir, María Florencia Rodríguez García, Ernesto Solís Moya, and Eduardo Espitia Rangel. 2020. “Competitive Ability of Breeds of Leaf Rust from of Crystalline Wheats”. Revista Mexicana De Ciencias Agrícolas 11 (1). México, ME:97-109. https://doi.org/10.29312/remexca.v11i1.1763.

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