1. Phenotypic stability of wheat gen colection
- Author
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Drenjančević, Luka, Petrović, Sonja, Vila, Sonja, Rebekić, Andrijana, and Dugalić, Ivana
- Subjects
morphological characteristic ,wheat ,genetic variability ,633/635 ,phenotypic stability ,DUS ,agronomic characteristic ,cultivar - Abstract
U ovom istraživanju ispitana je genetska varijabilnost i stabilnost prema fenotipskim svojstvima 150 genotipa ozime pšenice iz gen kolekcije Fakulteta agrobiotehničkih znanosti Osijek u četiri vegetacijske sezone. Odabir genotipova proveden je prema godini priznavanja, zastupljenosti u proizvodnji, području uzgoja i pedigreu. Ciljevi ovog istraživanja bili su: (1.) procijeniti vrijednosti agronomskih svojstava za utvrđivanje kriterija fenotipske stabilnosti pšenice, (2.) procijeniti genetsku varijabilnost germplazme pšenice na temelju agronomskih svojstava, (3.) identificirati genotipove nositelje određenih agronomskih svojstava i izabrati superiorne genotipove za buduća križanja. U analizu morfoloških podataka bila su uključena 22 svojstva prema UPOV-om vodiču za provođenje ispitivanja različitosti, ujednačenosti i postojanosti (DUS) pšenice. Mješovitim modelom analize varijance utvrđene su statistički značajne razlike između sorata za sve vegetacijske godine i za sva ispitivana svojstva; utvrđen je statistički značajan utjecaj razdoblja priznavanja u odnosu na visinu biljke, duljinu klasa, broj zrna po klasiću, masu 1000 zrna, prinos, broj zrna po klasiću, masu klasa i masu zrna po klasu dok regija priznavanja nije statistički značajno utjecala samo na duljinu kasa. Genotipovi su pokazali stabilnost i varijabilnost u ekspresiji morfoloških svojstava. Genotipovi Nirvana, Beaver i Magnif imali su najveći koeficijent različitosti, dok su se prema stabilnosti prinosa izdvojila dva Francuska genotipa Premio i Bastide i stari Argentinski genotip Excelisior te ih prema tome možemo preporučiti kao roditelje u budućim oplemenjivačkim programima., In this research, the genetic variability and stability according to the phenotypic properties of 150 winter wheat genotypes from the gene collection of the Faculty of Agrobiotechnical Sciences Osijek were examined in four growing years. The selection of genotypes was carried out according to the year of recognition, representation in production, area of cultivation and pedigree. The aim of this research were: (1) to estimate the values of agronomic properties for determining the criteria of phenotypic stability of wheat, (2) to assess the genetic variability of wheat germplasm based on agronomic properties, (3) to identify varieties carrying certain agronomic properties and to select superior genotypes for future crossings. In the analysis of morphological data, 22 properties were included according to the UPOV guidelines for the conduct of test for distinctness, uniformity and stability (DUS) of wheat. Statistically significant differences between the cultivars for all vegetation years and for all tested properties were determined by the mixed model of variance analysis; a statistically significant influence of the period of recognition was determined in relation to plant height, spike length, number of grains per spike, weight of 1000 grains, yield, number of grains per spike, weight of spikes and mass of grains per spike, while the region of registration did not statistically significantly affect only the spike length. Genotypes showed stability and variability in the expression of morphological traits. Genotypes Nirvana, Beaver and Magnif had the highest diversity coefficient, while two French genotypes Premio and Bastide, and old Argentine genotype Excelisior stood out accordin
- Published
- 2023