Combining ability of the maize (Zea mays L.) variety PMD-638
DOI:
https://doi.org/10.21704/ac.v82i2.1762Keywords:
Maize, combinatory ability, additive effectsAbstract
The main objective was to estimate the effects of general combinatory ability (GCA) and specific (SCA) of ten S1 lines from PMD-638 variety. Experiment was carried out at IRD-Sierra, placed at Jauja locality during the 2016- 2017 growing season. The field experimental design was Randomized Complete Blocks, and the variables of the study were grain yield (GY), male (MF) and female flowering (FF), plant (PH) and corn cob height (CH). GCA y SCA showed significant effects on the whole variables, except in MF in GCA. In GY, line 9 had the highest positive effect (0,66) and line 1 the highest negative effect (-0,68) and in SCA the 5x1 cross had the highest negative effect (-4,33). In days to MF, line 9 had the higher effect for GCA (2,44) and, in SCA, the higher effect was on the 6x5 cross (-9,95). In days to FF the higher effect on GCA occurred on line 5 (1,76) y, on SCA, the 7x3 cross (4,82). Related to PH y CH, the higher effect on GCA were on lines 9 (-6,83 y 6,36) y and 10 (-10.11 y 7.20), respectively. On SCA, the 9x7 (-21,65) y 9x5 (20,66) crosses had higher values. On CH the 9x5 (22,40) y 7x3 (19,65) crosses were found higher values.
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Copyright (c) 2021 Julián Chura Chuquija, Gilberto García Pando , Ricardo Sevilla Panizo
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