Caracterización fenotípica y agronómica de maíces (zea mays ssp. Mays l.) nativos de Sinaloa, México
2019
The genetic variation of maize (Zea mays ssp. Mays L.) in
Mexico has been studied especially in the south-central part of
the country. The state of Sinaloa (first in production) has 23% of
the national racial genetic variation, but its evaluation is scarce.
We collected 144 samples of corn (Tuxpeno Norteno, Vandeno,
Onaveno, Elotero de Sinaloa, Tabloncillo, Tablaoncillo Perla,
Bofo, Jala, Blando de Sonora, Chapalote, Dulcillo del Noroeste
and Reventador) in different state locations in order to describe
relevant morphological and agronomic characteristics so as to
determine a grouping pattern. The accessions were evaluated in
two environments with a simple lattice design of 12×12, analyzing 27 variables. ANDEVA detected significant differences between accessions (for all variables), for the genotype × environment interaction (width/length of the grain) and for environments
in spikes (length of branched section, number of primary branches and length of central branch), in cob (diameter/length, length
of the peduncle and of the cob) and in grain (volume and weight/
volume). The first three main components (PCA) explained 64%
of the variance, where the variables number of leaves, diameter
and length of the cob; the width and thickness of the grain; grain
width and length and flowering; are the most important. The
graphic representation of the PCA (1 and 2) revealed six groups,
and that of conglomerates five. Some accessions shared characteristics with more than one racial group and their position was
close to that of those sharing characteristics. A wide genetic diversity of native corn is confirmed in Sinaloa.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
20
References
0
Citations
NaN
KQI