Meiotic Parthenogenesis in a Root-Knot Nematode Results in Rapid Genomic Homozygosity

From: Genetics | Date: July 1, 2007| Author: Thomas, Varghese P; Williamson, Valerie M; Liu, Qingli L | Copyright information

ABSTRACT

Many isolates of the plant-parasitic nematode Meloidogyne hapla reproduce by facultative meiotic parthenogenesis. Sexual crosses can occur, but, in the absence of males, the diploid state appears to be restored by reuniting sister chromosomes of a single meiosis. We have crossed inbred strains of M. hapla that differ in DNA markers and produced hybrids and F^sub 2^ lines. Here we show that heterozygous M. hapla females, upon parthenogenetic reproduction, produce progeny that s...

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