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Current study was aimed to study the general combining ability (GCA) and specific combing ability (SCA) of 27 Indian mustard derived hybrids and estimation of average heterosis, heterobeltiosis and standard heterosis. Three testers namely Kranti, NRCHB101 and Vardan were crossed with nine lines and twenty seven hybrids were developed which were evaluated in completely randomized block design in the year 2017-18. Among various tested lines BPR 541-4 and RH 406 recorded positive and significant gca effects while among testers only NRCHB 101 have positive and significant gca effects for total seed yield per plot. Only NRCHB 101 recorded positive significant gca effects for seed yield (q/ha). Similarly, positive significant sca effect was exhibited by NRCHB 101 X PM 30 for seed yield (q/ha).. For seed yield per plant positive and significant average heterosis was found in four crosses with magnitude ranging from 23.01 to 67.87 while positive and significant heterobeltiosis was seen in NRCHB 101 X RH 406 and NRCHB 101 X Pusa Bold. Improvement methods which exploit both additive and non additive gene effects could be useful for the characters included in the present study. * Corresponding author KEYWORDS

IDENTIFICATION OF SUPERIOR PARENTS AND CROSS COMBINATION FOR SEED YIELD AND ITS ATTRIBUTING TRAITS IN Brassica juncea