Combining Ability Analysis in A 5x5 Diallel Cross of Maize Inbred Lines
Naveed Kamal, Muhammad Siddique, Saeeda Khanum and Muhammad Arshad
DOI : 10.36344/ccijavs.2020.v02i07.001 | Cross Current Int J Agri Vet Sci, 2020; 2(7): 32-35
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A complete diallel cross between five maize inbred lines viz; Elp-326, Elp-433, Elp-612, Elp-326 and Elp-780 was used to determine the genetic behavior of grain yield, days to 50% tasseling, days to 50% silking, plant height, cob height and cob girth during growing seasons 2018 and 2019. Analysis of variances was carried out for all the parameters following (Steel, R.G.D., & Torrie, J.H. 1980) technique which revealed highly significant differences for all the traits studied. The analyses of GCA and SCA were carried out using (Griffing, B. 1956) technique, Method I, Model II. Both GCA and SCA mean squares were highly significant for all the traits indicating the involvement of additive as well as non additive gene interactions in the expression of these traits. SCA mean squares and variances were larger than those of GCA mean squares and variances which suggested that non additive genes had major role in the inheritance of grain yield and its related characters under study. Elp-433 was found the best general combiner for all the parameters. Elp-426, Elp-326 were good general combiners for grain yield only. Elp-326 x Elp-780 and Elp-426 x Elp-433 were best combinations for grain yield and most of its components. The crosses Elp-780 x Elp-433, Elp-780 x Elp-426, Elp-780 x Elp-433, Elp-326 x Elp-433, Elp-612 x Elp-426 and Elp-326 x Elp-612 having higher reciprocal effects pointed out that partial role of cytoplasmic inheritance cannot be ruled out in controlling the physiology of these traits.
Study of Correlation, Heritability and Genetic Advance in Pearl Millet
Saeeda Khanum, Muhammad Siddique, Naveed Kamal and Bilqees Khanam
DOI : 10.36344/ccijavs.2020.v02i07.002 | Cross Current Int J Agri Vet Sci, 2020; 2(7): 36-39
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The present investigation was carried out to explore the genetic diversity of five Pearl millet genotypes: MGP-02, MGP-09, MG-P74, MGP-104 and MGP-117 for grain yield, days to 50% flowering, plat height, number of nodes, panicle length and panicle girth. Grain yield showed positive and significant/highly significant correlation with panicle length panicle girth, number of nodes and plant height indicating that grain yield can be boost up by improving these characters through phenotypic selection. Further, high PCV and GCV for the traits studied also suggested that theses parameters can be genetically improved through phenotypic selection in the subsequent generations. Comparatively higher heritability along with high genetic advance for grain yield, plant height and panicle length pointed out that these agronomic characteristics were controlled by additive genes and hence can be improved by gene pyramiding through visual recurrent selection from advanced generations.