| Abstrakt: |
The northwestern parts of India have well-established agroforestry systems with tree species such as poplar and eucalyptus, but due to the emergence of various problems in the planting of these species, there is a need for an alternative. Melia composita is considered a potential species. The present study was carried out on fourteen 5 year-old half-sib progenies of M. composita established at two different locations (Ludhiana and Bathinda) to evaluate their growth, yield potential, and adaptability. A significant difference among all the genotypes was found for all the characteristics. Pooled analysis of variance revealed that all the characteristics exhibited highly significant genotype-environmental interactions. Progenies PAU 3, PAU 1, PAU 16, and PAU 15 were found to be promising for growth and volume, of which PAU 3 showed stable performance in both environments and may be recommended for commercial cultivation. Principal component analysis (PCA) of Ludhiana and Bathinda revealed that the first two principal components (PCs) explained 83.14% and 83.07%, respectively, of the total variation. The top-performing progenies (PAU3, PAU 16, PAU 1, and PAU15) are of similar in characteristics and even selection for simple parameters like diameter at breast height (DBH), tree height (TH) and stem straightness (ST) can contribute positively to the selection of superior genotypes. Clustering analysis using the Ward D2 method of hierarchical clustering clearly revealed that the best-performing progenies were more stable, were grouped into the same cluster, and could be utilized for further breeding programmes. [ABSTRACT FROM AUTHOR] |
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