MOLECULAR MARKER ANALYSIS OF SPIKE FERTILITY INDEX AND RELATED TRAITS IN A BREAD WHEAT RECOMBINANT INBRED LINE POPULATION

El indice de fertilidad de espiga (FE) ha sido propuesto como un caracter ecofisiologico asociado con el numero de granos por unidad de area y como criterio de seleccion prometedor para los programas de mejoramiento de trigo. Sin embargo, la informacion sobre las bases moleculares de la FE aun es escasa. En este estudio, se realizo un analisis preliminar de marcadores moleculares en una poblacion RIL derivada del cruce entre dos cultivares argentinos con FE contrastante con el objetivo de identificar regiones genomicas candidatas asociadas con el caracter. Se analizaron 24 microsatelites y dos marcadores funcionales que se habia encontrado que se co-segregaban con la FE en un analisis de segregantes en “bulk” en la generacion F3 de la poblacion. Se recopilaron datos fenotipicos de tres experimentos de campo llevados a cabo durante las temporadas de cultivo 2013, 2014 y 2015 en Balcarce, Argentina. Se detectaron dos regiones genomicas asociadas con la FE en los cromosomas 5BS y 7AS, que mostraron ser estables a traves de los anos de evaluacion. Este trabajo aporta informacion novedosa acerca de las bases moleculares de la FE, las cuales deberan ser estudiadas con mayor profundidad.

• Publication year

  2019

• Venue

  Unknown venue

• Publication date

  2019-12-28

• Fields of study

  Not labeled

• Identifiers
  DOI 10.35407/bag.2019.xxx.02.01
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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