Open AccessAnalyses of phenotypes of recombinants and revertants from testcross progenies involving genes at the L group, conferring resistance to rust in flax
Author(s) -
ISLAM M. R.,
SHEPHERD K. W.
Publication year - 1991
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1991.tb00317.x
Subject(s) - biology , rust (programming language) , gene , genetics , phenotype , recombinant dna , strain (injury) , computer science , programming language , anatomy
When testcross progeny between lines carrying any two genes of the L group were analysed, rare susceptible and modified recombinants were recovered. Further, some susceptible recombinants yielded rare resistant plants (revertants) in their progeny. A total of 39 recombinants and 5 revertants were analysed for their reaction to a maximum of nine rust strains each avirulent on genes involved in their origin. The data showed that: a) Some of the rare recombinants represent new specificities. b) Reaction of a recombinant to a particular rust strains is usually stable. c) Modified recombinanls may be susceptible to certain rust strains. d) Revertants do not always possess the parental specificity.