The present investigation titled estimating genetic variability, heritability and genetic advance for shoot flyresistance and photoperiod insensitivity components in minicore collection of rabi sorghum [Sorghum bicolor (L.) Moench]consisted of 237 minicore with four checks ( M 35-1, IS 2312 and BJV 44 (resistant checks) and DJ 6514 (susceptiblecheck) for shootfly. Analysis of variance showed significant genetic variability among genotypes for all traits across threesowing dates except leaves per plant, seedling vigour at late sowing, seedling height at timely and late sowing, 50 per centflowering, panicle emergence, plant height at early sowing and 100 seed weight at late sowing. High phenotypic coefficientof variation and genotypic coefficient of variation were observed for the characters viz., seedling vigour, leaf erectness,deadheart percentage, oviposition percentage, glossiness, trichome density, panicle weight, panicle length and grain yieldper plant across all the three sowing situations. Moderate values of PCV and GCV were observed for seedling height duringearly rabi sowing. While seedling height recorded high PCV values and moderate GCV values during timely and latesowings. Low PCV and GCV values were recorded with characters viz., days to 50 per cent flowering, days to panicleemergence and days to physiological maturity across all the three dates of sowing. The characters viz., oviposition percentage(early sowing), seedling height (early sowing), seedling vigour (early and timely sowing), 50 per cent flowering (timely andlate sowing), plant height (timely sowing), days to panicle emergence and days to physiological maturity during timely andlate sowings, panicle length, panicle weight and grain yield per plant across all the three sowings showed high estimates ofbroad sense heritability. But, moderate values of heritability were observed for characters viz., seedling vigour (late sowing),seedling height (timely and late sowings), oviposition percentage (timely and late sowings), 50 per cent flowering, days topanicle emergence and days to physiological maturity during early sowing. Similarly, plant height showed moderate valuesof heritability during early and late sowings. The traits viz., 100 seed weight (all sowings) and leaves per plant (early andlate sowings) also showed moderate heritability. High heritability coupled with high genetic advance as per cent of meanwas observed for the characters viz., glossiness, trichome density, deadhearts, leaf erectness, panicle weight, panicle lengthand grain yield per plant across all three dates of sowing.