TITLE:
Heterosis and Combing Ability in F1 Population of Hexaploid Wheat (Triticum Aestivum L.)
AUTHORS:
Fahad Ali Kalhoro, Asghar Ali Rajpar, Shahmir Ali Kalhoro, Amanullah Mahar, Amjad Ali, Sohail Ahmed Otho, Rab Nawaz Soomro, Fayaz Ali, Zulfiqar Ali Baloch
KEYWORDS:
Wheat, Breeding, GCA, SCA, Heterosis, Heterobeltiosis
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.6 No.7,
April
24,
2015
ABSTRACT: The heterosis, heterobeltiosis, general combining ability (GCA) and specific combining ability (SCA) were examined during Rabi (crop season) of 2013-2014 in hexaploid wheat genotypes. The experiment for this study was conducted at the Botanical Garden, Department of Plant Breeding & Genetics, Sindh Agriculture University Tandojam, Pakistan. The breeding material was comprised of four parents (Imdad, TD-1, SKD-1, and Moomal). These parents were crossed in half partial mating fashion; thus, six possible cross combinations (F1s) were obtained (Imdad × TD-1, Imdad × SKD-1, Imdad × Moomal, TD-1 × SKD-1, TD-1 × Moomal, and SKD-1 × Moomal). A three-replicated RCB Design was used. The mean squares corresponding to different traits of various hexaploid wheat genotypes indicated significant (P F1 hybrids) effects for the characters (plant height, tillers plant-1, spike length, spikelets spike-1, seeds spike-1, seed index, and grain yield plant-1). The mean performance of F1 hybrids differed significantly (P