Heterosis and Combining Ability Estimates for Grain Yield and its Components in Maize Genotypes (Zea mays L.)

dc.contributor.author Khalafalla, M.M
dc.contributor.author Abdalla, A. H.
dc.date.accessioned 2014-09-10T06:43:28Z
dc.date.available 2014-09-10T06:43:28Z
dc.date.issued 1997
dc.description Page(s): 5 (2), 70- 85, 22 Ref en_US
dc.description.abstract Field experiments were carried out at two locations (Shambat and Wad Medani) to estimate heterosis and combining ability in maize in season 1992/93. A set of 45 genotypes, comprising nine parental genotypes and their 36 F1 hybrids, was used in the study. The experiments were conducted under irrigation in a randomized complete block design with three replications. Heterosis and general and specific combining abilities for seven characters were estimated. The highest magnitude of heterosis over mid-and better-parent was expressed for grain yield (kg/ha) at both sites. Grain yield/ha and 100-grain weight were controlled mostly by additive gene action, whereas cob weight and grain yield/plant were controlled by both additive and non-additive gene effects. The commercial cultivars Giza 2 and Variety 113 ranked high in general combining ability among the parents, indicating their value in future population improvement programmes. en_US
dc.description.sponsorship Khartoum University Press en_US
dc.identifier.issn 1560-2141
dc.identifier.uri http://hdl.handle.net/123456789/1928
dc.language.iso en en_US
dc.publisher Faculty of Agriculture, University of Khartoum, Shambat, Sudan en_US
dc.title Heterosis and Combining Ability Estimates for Grain Yield and its Components in Maize Genotypes (Zea mays L.) en_US
dc.type Article en_US
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