Vol. 8, Special Issue 8, Part F (2024)

Abstract: The occurrence as well as distribution of anthocyanin pigmentation in different part of the rice plant are more variable and a striking feature of the crop. This feature has been the subject of interest for several earlier studies. This experiment included 24 crosses between six white pericarp rice and four red pericarp rice following line x tester method of crossing. All F₁ seeds from white rice x red rice crosses produced red pericarp colour grain, confirmed that red pericarp colour was a dominant trait. Proportion of plants with red and white pericarp in F₂ population closely fitted in the ratio of 3:1 (red:white). In case of genetics of hull colour trait in the present study, the crosses between straw hull x brown hull, golden hull x brown hull, straw hull x black hull and golden hull x black hull colour, it was observed that brown hull was dominant over straw hull and golden hull, golden hull was dominant over straw hull and black hull was dominant over golden hull colour, indicating dominant nature of these hull colours in F₁ generation. The F₂ population of these crosses segregated into ratio of 13:3. This result revealed that anthocyanin pigmentation on hull colour was due to two independent genes, one dominant and other one recessive. The present study was undertaken to investigate the inheritance pattern of pericarp colour and ripen hull colour. The implications of these findings for rice improvement are discussed.