Variability and Stability Analysis for Nutritional Traits in the Mini Core Collection of Peanut uri icon

abstract

  • The nutritional quality of peanut (Arachis hypogaea L.) products depends on the protein content, oil content, and composition of oil. Low genetic variability has been a major bottleneck in genetic enhancement of these nutritional traits in commercial cultivars. The present study was conducted to identify stable genotypes withbetter nutritional traits and good agronomic performancefor use in future breeding programs. The 184 mini core accessions and four control cultivars were evaluated for nutritional traits for two seasons at two locations and for agronomic traits at one location. Significant genotypicand genotype × environment interactions were observed for all the nutritional and agronomic traits in the entire mini core collection and within each A. hypogaea ubspecies of fastigiata Waldron and hypogaea. Eighteen accessions with higher nutritional traits such as protein content,oil content, oleic acid, and oleic to linoleic acidratio with superior agronomic traits were identifiedand their stability analysis resulted in identificationof a high oleic acid content (>73%) ccession (ICG 2381). On the basis of higher nutritional and agronomic traits 11 subsp. fastigiata and 10 subsp. hypogaea diverse accessionswere identified with more than two trait combinationsfor use in peanut breeding programs for genetic nhancement of nutritional traits

publication date

  • 2012
  • 2012