Cluster analysis of biometric and economic indicators in Burley tobacco genotypes
DOI:
https://doi.org/10.61308/XVBA8182Keywords:
Burley tobacco; genotypes; biometric and economic indicators; cluster analysisAbstract
A cluster analysis of Burley tobacco genotypes was made in terms of biometric and economic indicators. It was found that the Burley 1344, Line 1527, Line 1543 and to some extent Line 1521 are characterized by the most favorable biometric indicators. These genotypes appear as good donors for hybridization to increase the number and size of leaves, as well as to shorten the length of the growing season. Line 1527 shows the most favorable economic indicators giving the highest yield and the highest percentage of first grade dry tobacco. Burley 1344, Line 1543, Line 1535 and Line 1531 also performed very well. The studied genotypes, according to the biometric indicators, are grouped into two clusters, with the former dividing into two and the latter into three subgroups. Depending on the economic indicators, the studied genotypes are again grouped into two clusters, both of which fall into two subgroups. Within those the standard variety Pliska 2002 occupies a relatively independent position, and this is more pronounced in terms of economic indicators. This shows that this variety has the greatest genetic difference from the other genotypes. The final results show that for the studied biometric and economic indicators, there is no pronounced tendency to arrange the genotypes in clusters.Overall performance from all the studied indicators shows that Line 1502 and Line 1540 on the one hand, and Burley variety 1317 and Line 1538 on the other stand out with the greatest genetic divergence. It can be recommended that pairs between these lines can be crossed with a view to creating hybrids between genetically heterogeneous parents, according to the needs of the breeding program.
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