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[DOWNLOAD] "Marker Assisted Selection in the Transfer of Root-Knot Nematode Resistance in the Commercial Peanut (Arachis Hypogaea L.) (Report)" by The Texas Journal of Science # Book PDF Kindle ePub Free

Marker Assisted Selection in the Transfer of Root-Knot Nematode Resistance in the Commercial Peanut (Arachis Hypogaea L.) (Report)

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eBook details

  • Title: Marker Assisted Selection in the Transfer of Root-Knot Nematode Resistance in the Commercial Peanut (Arachis Hypogaea L.) (Report)
  • Author : The Texas Journal of Science
  • Release Date : January 01, 2010
  • Genre: Engineering,Books,Professional & Technical,
  • Pages : * pages
  • Size : 195 KB

Description

Abstract. - This project was designed to introgress root-knot nematode (Meloidogyne arenaria (Neal) Chitwood) resistance through backcross breeding into the commercially available peanut (Arachis hypogea L.) cultivar 'Tamrun 96' using Marker Assisted Selection (MAS) as the primary selection tool. Nematode-resistant lines were selected and crossed with Tamrun 96. Field and greenhouse screenings were conducted after completion of the RFLP analysis to study the reliability of MAS as a breeding tool. Resistant plants were identified correctly 85% of the time by MAS in the study. The high percentage of correct identification of resistant genotypes coupled with the savings of time resulting from RFLP based selection justifies its use as a selection tool, when coupled with a conventional backcross breeding program. The root-knot nematode (Meloidogyne spp.) is found on the commercial peanut (Arachis hypogea L.) throughout the world (Argios 1997). In Georgia, at least one species of the root knot nematode is found in 25% of peanut fields (Motsinger et al. 1976). The most prevalent root-knot nematode species, Meloidogyne arenaria, is present in about 41% of Alabama peanut fields (Ingram & Rodriguez-Kabana 1980) and up to 26% of Texas peanut fields (Wheeler & Starr 1987). It has been noted that linear model estimates predict a 10% reduction in yield with an initial population of 44-83 M. arenaria eggs or J2 juveniles /500 cc soil (Wheeler & Starr 1987).


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