Level of heterozygosity and mode of inheritance of variable number of tandem repeat loci in avocado

Samir Mhameed*, Dror Sharon, Jossi Hillel, Emanuel Lahav, Daniel Kaufman, Uri Lavi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

To estimate heterozygosity level in the avocado (Persea americana Mill.) genome, two types of variable number of tandem repeat (VNTR) markers were used. Multilocus DNA fingerprints (DFPs) were analyzed on avocado progeny resulting from either crosses or selfing of cultivars. In five crosses, heterozygosity was 100%, while in two self-pollinated families, heterozygosity was 90% and 94%. Single locus, simple sequence repeat (SSR) DNA markers were analyzed by typing 59 loci on five avocado cultivars. Average heterozygosity varied from 11.50 to 0.66, while gene diversity varied from 11.42 to 0.66. Heterozygosity varied from 38% to 70%. The percentage of fragments that exhibited Mendelian inheritance was 62.5% to 85% (P < 0.05) for the DFP fragments and 85% for the SSR alleles.

Original languageEnglish
Pages (from-to)768-772
Number of pages5
JournalJournal of the American Society for Horticultural Science
Volume121
Issue number5
DOIs
StatePublished - Sep 1996

Keywords

  • DNA fingerprint
  • VNTR markers
  • breeding
  • simple sequence repeat

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