Alagarswamy, G and Chandra, S (1998) Pattern analysis of international sorghum multi-environment trials for grain-yield adaptation. Theoretical and Applied Genetics, 96 (3-4). pp. 397-405.
![[img]](http://oar.icrisat.org/style/images/fileicons/application_pdf.png) |
PDF
Restricted to ICRISAT users only Download (342kB) | Request a copy |
Abstract
Pattern analysis, which consists of joint and complementary use of classification and ordination techniques, was applied to grain-yield data of 12 sorghum genotypes in 25 environments to identify the grouping of genotypes and environments. The 12 genotypes represented a wide geographical origin, different genetic diversity, and three photoperiod-sensitive classes. The 25 environments represented a super population of widely different environments covering latitudes from 20°S to 45°N. The knowledge of environmental and genotype grouping helped reveal several patterns of genotype × environment (GE) interaction. The existence of two mega-environments, African and Asian, was indicated. Within these mega-environments, several subgroups were further discernible. The Asian-type subgroups of environments tended to be closer to one another, suggesting that they discriminated genotypes similarly. By contrast, the African-type sub-groups of environments were more divergent. Differential genotype adaptation patterns existed in the two mega-environments. The repeatability of the GE patterns seen in this multi-environmental trial, however, needs to be established over time.
| Item Type: | Article |
|---|---|
| Divisions: | UNSPECIFIED |
| CRP: | UNSPECIFIED |
| Subjects: | Mandate crops > Sorghum |
| Depositing User: | Library ICRISAT |
| Date Deposited: | 18 Sep 2011 10:23 |
| Last Modified: | 18 Sep 2011 10:23 |
| URI: | http://oar.icrisat.org/id/eprint/1738 |
| Official URL: | http://dx.doi.org/10.1007/s001220050755 |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | UNSPECIFIED |
| Links: |
Actions (login required)
 |
View Item |
Altmetric
Altmetric