TY  - JA
AU  - Ortiz,R.
AU  - Crossa,J.
AU  - Sevilla,R.
TI  - Minimum resources for phenotyping morphological traits of maize (Zea mays L.) genetic resources
SN  - 1479-2621
PY  - 2008///
CY  - United Kingdom
PB  - Cambridge University Press
KW  - Heritability
KW  - AGROVOC
KW  - Phenotypic variation
KW  - Replication
N1  - Peer review; Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=1479-2621
N2  - The aim of this research was to use variance components to calculate total phenotypic variation for 12 vegetative and reproductive maize traits. A set of 59 accessions, belonging to nine Peruvian highland maize races, were grown at two consecutive planting seasons in 2 years at one inter-Andean site in northern Peru. The trial data provided a means for calculating the variance components using the restricted maximum-likelihood method. The variance components were assumed to be stable while the number of environments and replications varied to simulate phenotypic variation for each trait. The least number of environments and replications, which does not affect the precision of phenotyping, was selected for assessing each trait. Tabulated data provide the number of environments and replications that can be used as a reference for Peruvian highland trials to assess quantitative variation in plant and reproductive traits. The results suggest that fewer environments and replications are needed for reproductive than for plant traits because the former show higher heritability than vegetative traits
UR  - https://hdl.handle.net/20.500.12665/678
T2  - Plant Genetic Resources: Characterization and Utilization
DO  - https://doi.org/10.1017/S1479262108994168
ER  -