Yanal Alkuddsi , S.S. Patil , S. M. Manjula , B. C. Patil , H. L. Nadaf , B. S. Nandihali

Agricultural Research Station, Dharwad Farm, University of Agricultural Sciences, Dharwad, Karnataka, 580005, India
Author    Correspondence author
Molecular Plant Breeding, 2013, Vol. 4, No. 24   doi: 10.5376/mpb.2013.04.0024
Received: 17 Jun., 2013    Accepted: 25 Jun., 2013    Published: 27 Jun., 2013

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Alkuddsi et al., 2013, Development of heterotic groups (G. hirsutum vs G. barbadense) based on combining ability and interspecific hybrids performance for yield and fiber quality traits, Molecular Plant Breeding, Vol.4, No.24 196-208 (doi: 10.5376/mpb.2013.04.0024)

Utilization of heterosis depends on genetic diversity existing between the parents, magnitude of dominance at the yield influencing loci and the genetic distance between the chosen parental genotypes. It is possible to maximize heterosis by enhancing genetic distance between two chosen parental populations. The main objective of the Line×Tester study was to determine the combining ability status of the barbadense and hirsutum lines included in the heterotic box. These lines were compared with other barbadense and hirsutum lines. For the pattern of combining ability and the potentiality of the interspecific hybrids developed based on them. The efforts on creating recombinational variability have begun with two barbadense lines. However to compare the potentiality of the 8 hybrids with other potential hybrids developed over years at Dharwad centre and best commercial hybrids (Bt and non Bt), a separate evaluation of these hybrids was taken up. Realizing the need for developing potential interspecific (G. hirsutum×G. barbadense) hybrids, a detailed study was initiated at UAS Dharwad to identify hirsutum and barbadense genotypes capable of giving potential interspecific hybrids. Based on this study done during earlier years in 2009-2010 two barbadense DB 533 and DB 534 and four hirsutum DH 98-27 (T₁), ZCH 8 (T₂), 178-24 (T₃) and DH 18-31 (T₄) lines giving best hybrids (H×