Author(s): H.M.I. Hafiz, A.S. Larik and Y.A. Al-Saheal
Article publication date: 1985-09-01
Vol. 3 No. 2 (yearly), pp. 281-287.
325
Keywords
plant, pollen, monosome
Abstract
The study of 40-chromosome progeny of the breeding material for establishing a monosomic series in Avena sativa cv. Manod (2n=6x=42) by backcrossing it with A. sativa cv. Borreck GM1-1, revealed the presence of 19 bivalents and 2 univalents in all the pollen mother cells (PMC's) of Av. 562/3/41/53 as compared to normal 20 bivalents per PMC. It is highly likely that the original monosome (Satellite-2, Hafiz 1978) has undergone monosomic shift. Furthermore, it disturbs other homoeologous chromosomes because of greater affinity compared to the homologous partner. The paper also discusses the implication of monosomic analysis for gene-chromosome association in practical plant breeding.