Vol. 7, Issue 3 (2019)
Combining ability studies for yield and yield contributing traits under two different plant densities in maize (Zea Mays L.)
Author(s): E Lamalakshmi Devi, SS Verma, Kamendra Singh, PK Shrotria and NK Singh
Abstract: A study on combining ability for yield and its contributing traits was done in 10 inbred lines and its 45 F1S using half diallel under optimum (OPD) and high plant density (HPD) environments. The analysis of variance for different characters indicated highly significant differences among treatments for all the characters studied under both the environments which proved suitability of the experimental materials chosen for the present investigation. The analysis of variance for combining ability indicated that mean squares due to GCA were highly significant for all the characters except ear diameter in OPD, whereas, in HPD these were highly significant for all the characters studied. However, the mean squares due to SCA were highly significant for all the characters studied in both the environments. This suggested that both the additive and non- additive gene actions were important for the expression of these traits. Parent P3 and P6 in OPD and P6 and P10 in HPD were the most promising parents having high GCA for grain yield. Crosses, P1 X P7 and P1 X P5 were the best specific combiners for grain yield in OPD and HPD, respectively.
Pages: 4568-4573 | 680 Views 171 Downloads
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How to cite this article:
E Lamalakshmi Devi, SS Verma, Kamendra Singh, PK Shrotria, NK Singh. Combining ability studies for yield and yield contributing traits under two different plant densities in maize (Zea Mays L.). Int J Chem Stud 2019;7(3):4568-4573.
