Abstract
Studies on meisosis and pollen fertility have been made in BC1F1, BC1F2 and BC1F3 generations of Arachis. The plants in the BC1F1 generation were found to contain 2n=50 chromosomes and the pollen fertility was about 36 per cent. In BC1F2 generation, a few plants which were erect showed 2n=40 chromosomes and a pollen fertility of 92 per cent. The seeds collected from BC1F2 generation (2n=40) maintained the chromosome number with a further improvement in pollen fertility (98.0 per cent). A few important yield contributing characters were studied in BC1F3 generation. It is suggested that a vast improvement could be made with respect to some of these characters. The plants in BC1F3 generation also appeared to possess field resistance to Cercospora leaf spot disease. Selection pressure is being imposed to stabilize the yield and resistance to disease.
