The pattern of aroma and allelic relationship was studied in nine crosses by involving Swarna, IR-64, BR-240 and Abhaya as non-aromatic and Krishnabhog, Pusa Basmati, Tarori Basmati, Madhuri-11 and Gangabaru as aromatic parents. The F1 plants were non-aromatic. The F2 in four crosses segregated in the ratio of 3: 1 while in the other two crosses the ratio found to be 15:1. The results indicated that the aroma in the first crosses are controlled by monogenic recessive genes while in other two crosses it is governed by digenic recessive genes.
The allelic relationship in these crosses were studied by involving aromatic parents vz; Pus a Basmati × Krishnabhog, Madhuri-11 × Krishnabhog and Pusa Basmati × Thrunbhog. The F1 progenies found to be aromatic and F2 segregated into aromatic and non aromatic progenies suggesting that the genes responsible for aroma was non-allelic in the parents.
Inheritance, allelic relationship, aroma, rice
