Morphological and cytological variability in interspecific hybrids Trifolium pratense x T. medium

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Publikace nespadá pod Fakultu sportovních studií, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.
Název česky Morfologická a cytologická variabilita mezidruhových hybridů Trifolium pratense x T. medium
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JAKEŠOVA Hana ČECHOVÁ Lydie ŘEPKOVÁ Jana HOFBAUER Jan

Rok publikování 2008
Druh Článek ve sborníku
Konference Proceedings Modern Variety Breeding for Present and Future Needs
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Obor Šlechtění rostlin
Klíčová slova Trifolium pratense; Trifolium medium; hybrids
Popis Trifolium pratense is a high yielding, high quality fodder crop. However, it shows rather low persistency, which could be overcome by hybridisation with a species creating rhizomes. Hybrids between T. pratense and T. medium have been previously obtained by embryo rescue and the number of chromosomes was evaluated by flow cytometry. The DNA content converted into number of chromosomes ranges from 27 to 57 in individual plants. This work aimed at the evaluation of twelve morphological traits (stem weight/length, internode number, length/width of the central leaflet of the uppermost triple leaf below the top head, length/ width of the central leaflet of the triple leaf on the 4th internode, stem thickness on the 4th internode, stem and head number per plants, intensity of white marks and average leaf area) in ten populations (550 plants) derived from F1 hybrids and in the parental species. The significance of morphological differences was determined by ANOVA test. Nearly all examined traits were intermediate in hybrids; they reached higher values than in T. medium and lower values than in T. pratense. The stem number was significantly higher in ten hybrid populations compared with both parental species.
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