Author(s):

Saresh NV, Verma A, Singh NB, Choudhary P, Sankanur M, Sapana Thakur and Meena D

Abstract: The present study was undertaken to know heterotic effects of different genotypic combinations of Grewia optiva for nursery characters. Ten superior genotypes, six females (SO-1, SO-2, SO-4, SO-8, CH-2 and SI-15) and four male (SO-3, SI-6, BI-4 and HA-4) were chosen and were control crossed using Line X Tester (6X4 factorial) mating design. All the crosses produced viable seeds and heterosis was prevalent for the entire nursery characters. Maximum relative heterosis for plant height and collar diameter was displayed by cross SI-15 X BI-4 (49.06 and 44.14%), SO-8 X SI-6 and SO-8 X BI-4 (23.16 and 46.63%) exhibited maximum positive heterosis for number of leaves and internodal length. SO-8 X SI-6 has come up with highest positive mid parent value of 122.57% for leaf area (cm²). For Leaf fresh and dry weight (g), significant positive heterosis was obtained in SO-8 X SI-6 (169.29 and 171.56%, respectively). On the basis of the results, SI-15 X BI-4, SO-8 X HA-4, SO-8 X BI-4 and SO-1 X BI-4 hybrids has been recommended for field level exploitation. Whereas, SI-15, SO-8 and SO-1 (female) and HA-4, BI-4 and SI- 6 (male) genotypes would be considered as stable parents for future breeding programmes.

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