Inheritance and mapping of Mj-2, a new source of root-knot nematode (Meloidogyne javanica) resistance in carrot.

Resource Type: 
Publication
Publication Type: 
Journal Article
Title: 
Inheritance and mapping of Mj-2, a new source of root-knot nematode (Meloidogyne javanica) resistance in carrot.
Authors: 
Ali A, Matthews WC, Cavagnaro PF, Iorizzo M, Roberts PA, Simon PW
Series Name: 
The Journal of heredity
Journal Abbreviation: 
J. Hered.
Volume: 
105
Issue: 
2
Page Numbers: 
288-91
Publication Year: 
2014
Publication Date: 
2014
DOI: 
10.1093/jhered/est090
ISSN: 
1465-7333
EISSN: 
1465-7333
Cross Reference: 
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Citation: 
Ali A, Matthews WC, Cavagnaro PF, Iorizzo M, Roberts PA, Simon PW. Inheritance and mapping of Mj-2, a new source of root-knot nematode (Meloidogyne javanica) resistance in carrot.. The Journal of heredity. 2014; 105(2):288-91.
Abstract: 

Root-knot nematodes limit carrot production around the world by inducing taproot forking and galling deformities that render carrots unmarketable. In warmer climates, Meloidogyne javanica and Meloidogyne incognita are most prevalent. In F2 and F3 progeny from the cross between an Asian carrot resistant to M. javanica, PI 652188, and a susceptible carrot, resistance response was incompletely dominant with a relatively high heritability (H (2) = 0.78) and provided evidence for a single gene, designated Mj-2, contributing to resistance. Molecular markers linked to the previously described root-knot nematode resistance gene, Mj-1 on chromosome 8 derived from "Brasilia," demonstrated that Mj-2 does not map to that same locus but is on the same chromosome.

Publication Model: 
Print-Electronic
Language: 
English
Language Abbr: 
eng
Journal Country: 
United States
Keywords: 
  • Daucus carota
  • Meloidogyne incognita
  • Meloidogyne javanica
  • carrots
  • chromosome mapping
  • genes
  • genetic markers
  • genetic resistance
  • heritability
  • host-parasite relationships
  • inheritance (genetics)
  • loci
  • pest resistance
  • progeny
  • root-knot nematodes