Vol. 10, Issue 12 (2021)

Author(s):
Sampath VS, Venkata Ramana Rao P, Lal Ahamed M and Ramana JV

Abstract:
Rice is the staple food in the majority of Asian countries in general and India in particular. Current rice acreage faces a lot of difficulties rising from urbanization and climate change. In India rice is an important food crop cultivated majorly in kharif season. Biotic and abiotic stresses are major constraints in rice production. Apart from these stresses, physiological traits like high grain shattering is also a contributor to the problems faced by farmers. Grain shattering causes significant yield loss in the mega variety MTU1010. Hence, introgression of low grain shattering QTLs/genes into mega variety MTU 1010 is highly necessary. JGL17004, a high yielding low grain shattering variety was selected as donor parent. Eight four backcross inbred lines in BC₂F₈ generation were developed from the cross MTU1010/JGL17004. Phenotyping of BILs for low grain shattering and yield traits was undertaken in the present study. Out of 84 BILs, 54 lines showed low grain shattering, 20 lines showed moderate shattering and 10 lines showed high grain shattering. Recurrent parent showed more shattering percentage than JGL17004. The mean of BILs was in between the parent for most of the traits viz., Sh, DFF, PL, SF, GYPP and TW. ANOVA for augmented RBD showed that phenotyping data was significant for all the traits. The BILs 55 and 53 recorded a low shattering of 1.52% and 0.34% respectively with a high grain yield per plant (35.7 g and 33.8 g respectively).