Weighted Diallel Analysis Across Environments: Combining Ability and Heterotic Pattern Models
✍ Scribed by T. Hohls; G. P. Y. Clarke; H. O. Gevers
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 799 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0323-3847
No coin nor oath required. For personal study only.
✦ Synopsis
The matrix algebra needed for analysing data from diallcl experiments across several environments is provided. Practical considerations for subdividing large incidence matrices and appending constraint matrices are discussed to allow large expcriments to be analysed on desk top computers. In particular, a combining ability model and heterotic pattern model have been used to show how heterogeneous variances can be accommodated by weighting The models provide valuable information on the performance of lines in crosses, the heterotic patterns of the lines, and the heterotic groups to which they belong. The methodology is illustrated by application to a diallel cross conducted among 12 elite white modified opaque-2 maize inbred lines.