Seed quality parameters (Germination percentage and seedling vigor index) of rabi sorghum seeds influenced by rice weevil infestationa

The genotypes KMJ 1(99.50%), RSJ 1(97.50%), CSV 216R(96.00%) and AKJ 1(94.50%) have shown maximum germination percentage under uninfested condition and also the same genotypes performed well by showing (100.00%), (93.00%) and (91.50%) highest germination percentage respectively even after four months infestation period. However under uninfested condition the genotypes Phule Revati (73.00%), Phule Vasudha (73.50%), 5-4-1(80.00%) and CSV 22(82.50%) have recorded significantly lower germination percentages where as under infested condition BR 33(54.50%), 5-4-1(56.50%), BJV 44(58.00%), CSV 22(61.00%), SMJ 1(66.00%) and CSV 18 (67.00%) have recorded minimum germination. The maximum seedling vigor index was recorded in M 35-1(3448) in both uninfested and (2649) infested conditions and at the same there was reduction in germination by 0.54 per cent for every one per cent increase in population buildup of rice weevils and the values are significant at 5 per cent.