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2006, vol. 42, iss. 2, pp. 237-246
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Variability and stability of stem height and harvest index in Triticum sp
Varijabilnost i stabilnost visine stabljike i žetvenog indeksa u Triticum sp
University of Novi Sad, Faculty of Agriculture
Abstract
Phenotypic variability, as well as, stem height and harvest index stability of 28 divergent wheat genotypes of different ploidity have been examined. Twenty hexaploid genotypes were selected wheat varieties from Novi Sad and all over the World. Eight genotypes of total studied sample were tetraploid wheat. High stability level was denoted for the most of the genotypes. Stability of wild relatives was somewhat lower comparing to selected varieties. According to Principal Component Analysis, the first component carried out the greatest share of total variability for the most of the genotypes.
Sažetak
U radu je ispitana fenotipska varijabilnost i stabilnost visine stabljike i žetvenog indeksa 28 divergentnih genotipova pšenice, različitog nivoa plodnosti. Od toga 20 heksaploidnih genotipova su selekcionisane novosadske i sorte iz svetskog sortimenta, a 8 genotipova su spontani, tetraploidni srodnici pšenice. Uočena je visoka stabilnost većine sorti. Spontani srodnici pšenice su ispoljili visoku stabilnost, ali ipak nižu u odnosu na selekcionisane genotipove. Najveće učešće u ukupnoj varijaciji svojstava je imala prva glavna komponenta.
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