Yield combining ability and components in two groups of inbred lines of maize.
DOI:
https://doi.org/10.15517/am.v22i2.11800Keywords:
Zea mays L., hybrids, genetic material, crosses, SCA.Abstract
The objective of this
work was to estimate the effects of the General Combining
Ability (GCA) of inbreed lines, and Specifi c Combining
Ability (SCA) of its crosses, and to evaluate its use
in maize hybridization program. The present work was
conducted in two stages; in year 2006 the crosses were done
at the experimental station from Universidad Autónoma
Agraria Antonio Narro Unidad Laguna (UAAANUL), and
evaluation of the crosses was conducted in year 2007,
at two localities and in three environments: UAAAN’s
experimental station during spring and summer cycles,
Niagara and Aguascalientes Municipality during the spring
cycle. The genetic material used were two groups of inbred
lines, the fi rst formed by four inbred lines from UAAANUL,
and the second group was formed by ten inbred lines from
Centro Internacional para el Mejoramiento del Maíz y
Trigo (CIMMYT). The estimation of General Combining
Ability (GCA) and Specifi c Combining Ability (SCA) were
obtained using a test of line x line. CML254 (10.88 t/ha)
and AN447 (6.64 t/ha) had the highest effects of GCA for
both groups. The highest effects of SCA were for CML264
x AN447 (128.8 t/ha) and CML247 x AN123 (116.2 t ha-
1). These results show that is possible to structure a maize
hybridization program, using the best inbred lines from
CIMMYT and UAAANUL.
Downloads
Downloads
How to Cite
Issue
Section
License
1. Proposed policy for open access journals
Authors who publish in this journal accept the following conditions:
a. Authors retain the copyright and assign to the journal the right to the first publication, with the work registered under the attribution, non-commercial and no-derivative license from Creative Commons, which allows third parties to use what has been published as long as they mention the authorship of the work and upon first publication in this journal, the work may not be used for commercial purposes and the publications may not be used to remix, transform or create another work.
b. Authors may enter into additional independent contractual arrangements for the non-exclusive distribution of the version of the article published in this journal (e.g., including it in an institutional repository or publishing it in a book) provided that they clearly indicate that the work was first published in this journal.
c. Authors are permitted and encouraged to publish their work on the Internet (e.g. on institutional or personal pages) before and during the review and publication process, as it may lead to productive exchanges and faster and wider dissemination of published work (see The Effect of Open Access).