Indian Society of Genetics & Plant Breeding

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ANEUPLOID ANALYSIS FOR QUALITATIVE CHARACTERS IN A RECOMBINANT OF WHEAT AND RYE

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Monosomic analysis was used to locate genes for several qualitative traits in chromosomes
of a wheat-rye recombinant, Selection-26 (Sel-26), using the monosomic series of cv.
Chinese Spring. The study revealed that the anthocyanin pigmentation in leaf sheath is
inherited as a single dominant gene in chromosome 18. The character hairy rachis node is
controlled by two nonlinked duplicate genes in chromosomes SA and 7D. The
symbols Hm 1 and Hm 2 are proposed for these two loci. The straight upper part of glume
of Sel-26 is due to a single dominant gene in chromosome 68. The gene symbol Gc (glume
curvature) is proposed for this character. Three major genes governing hairy glume
phenotype have been identified, two for hairiness in chromosomes lA and 2A, and one
recessive gene for glabrous glumes in 4A. Modifiers in 68 and 78 are also reported for this
character. Aminor recessive gene for red grain colour has been detected in chromosome 4A
of Sel-26, presumably contributed by the rye parent and a modifier in SA. Using the phenol
test, the tryosinase producinggene has beenmapped in chromosome 68 for glume character
and in 48 for rachis.
 

Keywords: Aneuploid analysis, qualitative characters, wheat-rye recombinant

Info

Year: 1995
Volume: 55
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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