Stratification of maize test-sites in botswana in relation to selected sites within the Sadc region based on yield performance
Material type:
TextPublication details: Nairobi (Kenya) KARI|CIMMYT : 2002Description: p. 263-267ISBN: - 970-648-120-6
| Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|---|
| Conference proceedings | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Staff Publications Collection | CIS-4183 (Browse shelf(Opens below)) | 1 | Available | 630224 |
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Stratification of maize test-sites in Botswana was done to identify key benchmark testing sites similar to testing sites in the SADC region.. Grain yield from 31 testing sites across 3 years were compared with four test-sites in Botswana. Sequential retrospective (Seqret) pattern analysis methodology was used to stratify the test-sites according to their similarity and dissimilarity based on genotype yield. Seqret pattern analysis methodology uses historical data, taking into account complicated imbalances of data caused by change over the years and loss of whole locations and genotypes in some years. Analysis of cumulative data from 1998/99-2000/2001 seasons captured the major patterns of similarities among test- sites by clustering 25 retained sites into 4 clusters with an overall R2 = 0.61. The test-sites in Botswana clustered into one of the four clusters, which captured some of the major similarities. The results obtained from this data set will be useful in restricting few testing sites in the future.
Global Maize Program|Research and Partnership Program
English
0409|AGRIS 0401|AL-Maize Program
Juan Carlos Mendieta
INT1888|INT2636
CIMMYT Staff Publications Collection
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