Department of Plant Breeding and Genetics, College of Agriculture, Gwalior-474002 (M. P.), India
The inheritance of petaloidy along with plant height and maturity was studied in two crosses of pea, taking Early December (Petaloid) as male and two normal flower-late maturing varieties, 479 B and 172 M as females. Monogenic factor pairs governed the expression of petaloidy and plant height. The normal flower condition was dominant to petaloid. The symbol ‘Pst’ was proposed for the gene controlling petaloidy. A digenic F2 ratio of 12 late: 3 medium: 1 early was obtained for maturity. Joint segregation of characters revealed that all the four genes governing three characters were independent of one another. Pod deformity and style number were pleiotropically controlled by the gene ‘Pst’.
