University of Khartoum

Selection Indices and Genetic Advance in Maize (Zea mays L.)

Show simple item record Ahmed, A.A. Abdalla, A.H. 2014-09-08T07:19:38Z 2014-09-08T07:19:38Z 1996
dc.identifier.issn 1560-2141
dc.description Page(s): 4 (1), 63-72, 14 Ref. en_US
dc.description.abstract Twenty- five genotypes of maize (Zea mays L.) were evaluated at two locations (Shambat and Sennar) in a 5x5 partially balanced lattice design. Data were collected on four characters, namely number of rows/cob, number of grains/cob, 100-grain weight and grain yield/plant. Then, different selection indices were constructed using different combinations of these characters. The selection index based on number of rows/cob, 100-grain weight and grain yield/plant gave the highest expected genetic advance (23.6 kg/ha) and the highest relative efficiency (195.3%). Selection indices involving 100-grain weight showed relatively high efficiency compared to indices of the same order involving number of grains/cob. Generally, the efficiency was increased when the indices included two, three and four characters, at a time. Thus, it could be concluded that the more inclusive the selection index is the more its efficiency will be. However, special consideration should be given to those traits, which have negative direct effects on grain yield. en_US
dc.description.sponsorship Khartoum University Press en_US
dc.language.iso en en_US
dc.publisher Faculty of Agriculture, University of Khartoum, Shambat, Sudan en_US
dc.subject Shambat, Sennar, grain weight and number of grain. en_US
dc.title Selection Indices and Genetic Advance in Maize (Zea mays L.) en_US
dc.type Article en_US

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