A 9 × 9 diallel analysis in peanuts (A. hypogaea L.): Flowering time, tops' weight, pod yield per plant and pod weight

A. Gibori*, J. Hillel, A. Cahaner, A. Ashri

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Four quantitative traits were studied by analysing F2 data derived from a 9 × 9 diallel cross utilizing widely divergent, inbred, erect cultivars of peanuts, A. hypogaea. Bidirectional dominance was found in the traits total pod yield per plant and number of days from planting to first flower; in pod size, the alleles giving small pods were consistently dominant and for high tops' weight, dominance and overdominance were found. The high heritability of pod yield/plant (0.79) indicates that breeding for higher yield/plant can succeed if large F2 populations are grown and rigorous visual selection combined with progeny testing are employed. The genetic correlations of pod yield/plant with other traits were low. Breeding for plants with large (jumbo) pods can be aided by the fact that they are homozygous recessive, or nearly so. Simultaneous breeding for high yields and large pods is possible: there was a positive (but low) genetic correlation between the two (0.16). A modification by which less biased estimates of the number of effective factors can be obtained and a possible relationship between bidirectional dominance and genic interaction were proposed.

Original languageEnglish
Pages (from-to)169-179
Number of pages11
JournalTheoretical And Applied Genetics
Volume53
Issue number4
DOIs
StatePublished - Jul 1978

Keywords

  • A. hypogaea L.
  • Diallel analysis
  • Quantitative traits

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