Marker‐Assisted Selection to Pyramid Nematode Resistance and the High Oleic Trait in Peanut

By Y. Chu, C. L. Wu, C. Corley Holbrook, B. Tillman, George Person, P. Ozias‐Akins. 2011

176 citations recorded by the source corpus.

The dynamic challenges of peanut (Arachis hypogaea L.) farming demand a quick response from breeders to develop new cultivars, a process that can be aided by the application of molecular markers. With the goal to pyramid nematode resistance and the trait for high oleic:linoleic acid (high O:L) ratio in seeds, nematode‐resistant cultivar Tifguard was used as the recurrent female parent and high O:L cultivars Georgia‐02C and Florida‐07 were used as donor parents for the high O:L trait. ‘Tifguard High O/L’ was generated through three rounds of accelerated backcrossing using BCnF1 progenies selected with molecular markers for these two traits as the pollen donors. Selfed BC3F2 plants yielded marker‐homozygous individuals identified as Tifguard High O/L, compressing the hybridization and selection phases of the cultivar development process to less than 3 yr. The accuracy of marker‐assisted selection (MAS) was confirmed by phenotyping a subset of F2:3 populations from both parental combinations. Once additional molecular markers linked with traits of interest are designed to be compatible with high‐throughput screening platforms, MAS will be more widely integrated into peanut breeding programs.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/119db44d2112d5302607b29b5189f0cb6895af7e

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In Plant Science

  1. A. Bohra
  2. Rajeev K. Varshney
  3. A. Graner
  4. J. Hormaza
  5. R. Aggarwal
  6. A. Wünsch

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