Genetic analysis of some Exotic × Indian Crosses in Sorghum IV. Chi-Square Analysis of Association Between Yield, Maturity and Plant Height In F₂ Generation

In conventional hybridisation between dwarf early and tall late types, response to selection is frequently limited due to association of characters, particularly plant height, maturity and grain yield. Using a chi-square method of partitioning, an attempt is made to distinguish between linkage, pleiotropy and physiologial association. Strong pleiotropic effects of the flowering and height genes are indicated. Handling a large number of crosses in preference to intensive handling of a few crosses is fruitful while bringing in recombination from crosses involving divergent parents for height and maturity.