INHERITANCE OF ANTI-A 1 HEMAGGLUTINATING ACTIVITY IN LIMA BEANS, PHASEOLUS LUNATUS

Abstract

Crosses and reciprocal crosses were made between a line with low agglutinating activity and 2 with high activity. The F1 all snowed high activity and the F2 progeny segregated in approximate 3:1 distribution indicating that the gene for "high" agglutinating activity is dominant. F2 progeny resulting from selling the F1''s using a female "high" parent suggest an extragenic influence on the ratios. Several explanations are proposed for the skewness of the ratio to the nigh side. The "low" lines are apparently homozygous recessives. Differences between "high" and "low" lines seem to be related to concentration of agglutinin present or to concentration of one or more agglutinin-inhibiting substances.