TY  - JA
AU  - Lillemo,M.
AU  - Ginkel,M.Van
AU  - Trethowan,R.M.
AU  - Hernandez,E.
AU  - Rajaram,S.
TI  - Associations among International CIMMYT bread wheat yield testing locations in high rainfall areas and their implications for wheat breeding
SN  - 1435-0653
PY  - 2004///
CY  - USA
PB  - CSSA, Wiley
KW  - Bread
KW  - AGROVOC
KW  - Environmental factors
KW  - Germplasm
KW  - Growth period
KW  - Yields
KW  - Plant breeding
N1  - Peer review; Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0011-183X
N2  - A good understanding of how the target environments for a breeding program differentiate the germplasm with respect to yield is crucial and allows plant breeders to better target their germplasm. To determine the relationships among high rainfall yield testing locations, yield data from 8 yr of CIMMYT's High Rainfall Wheat Yield Trial (HRWYT) were analyzed by shifted multiplicative model (SHMM) and incremental sum of squares (ISS) classification analyses to group sites within and across years. In the cumulative cluster analysis, about half of the sites clustered into a group characterized by increasing temperature toward maturity. The SHMM analysis identified several sites with high overall association with other sites around the world, and which can be considered as good predictors of global yield performance within the high rainfall megaenvironment. These are autumn-sown locations, which fall into the biggest group of the cumulative cluster analysis with increasing temperature during the growing season. On the other hand, remarkably low associations with global yield ranking were shown for Sta. Catalina (Ecuador) and CIMMYT's primary high rainfall yield-testing location at Toluca (Mexico), which in contrast experience decreasing temperatures toward maturity. Although excellent sites for disease screening, this analysis shows that they do not associate well with the world's high rainfall wheat growing areas for yield
UR  - https://hdl.handle.net/20.500.12665/1296
DO  - https://doi.org/10.2135/cropsci2004.1163
T2  - Crop Science
ER  -