Penetrance of gene I for Fusarium resistance in the tomato

Nira Retig*, N. Kedar, J. Katan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Tomato seedlings were inoculated, from one to ten days after emergence, with the tomato Fusarium wilt fungus race 1. The penetrance of gene I for Fusarium resistance in the homozygous resistant variety Homestead 24 was almost complete. In the F1 (Ii) between Homestead 24 and the susceptible Marmande penetrance was incomplete and ranged between 66.3% and 100% in different experiments. The age of seedlings at time of inoculation did not affect the final percentage of diseased plants while it influenced the nature and the time of appearance of disease symptoms. Possible consequences of incomplete penetrance for the resistance of F1 hybrids are discussed.

Original languageEnglish
Pages (from-to)252-257
Number of pages6
JournalEuphytica
Volume16
Issue number2
DOIs
StatePublished - Sep 1967

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