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2015, vol. 60, br. 2, str. 119-133
Fenotipska divergentnost morfoloških osobina i komponenti prinosa genotipova tvrde pšenice u uslovima stresa izazvanog sušom i bez stresa
aDepartment of Agronomy and Plant Breeding, Faculty of Agriculture, University of Maragheh, Maragheh, Iran
bDryland Agricultural Research Institute (DARI), Gachsaran, Iran

e-adresasabaghnia@maragheh.ac.ir
Ključne reči: tvrda pšenica; stres izazvan sušom; multivarijaciona analiza; fenotipska raznolikost
Sažetak
Stres izazvan sušom je najvažniji faktor koji ograničava proizvodnju useva u većini poljoprivrednih oblasti u svetu. Tvrda pšenica se generalno uzgaja u sušnim i polusušnim oblastima i suša često izaziva ozbiljne probleme u njenoj proizvodnji. Ocenjeno je četrnaest genotipova tvrde pšenice u uslovima polusušne mediteranske klime u uslovima bez stresa i u uslovima vodnog stresa. Prikazani su podaci o četrnaest agronomskih osobina, kako bi se procenila fenotipska raznolikost i istražile veze između prinosa zrna i drugih važnih komponenti prinosa kod tvrde pšenice. Koeficijent varijacije (CV) za sve genotipove se kretao od 0,71% do 17,62% u sredinama bez stresa, kao i od 1,38% do 23,70% u sredinama sa vodnim stresom. Grupisanje zasnovano na genotipovima tvrde pšenice je razvrstalo merene komponente u tri glavne grupe u sredini bez stresa. Dužina vršne internodije, agronomska ocena i visina biljke su bile najpovezanije komponente sa prinosom zrna. Takvo grupisanje u sredini sa vodnim stresom je ukazivalo da su vigor rasta, masa hiljadu zrna, probna težina ili hektolitar i agronomska ocena najpovezanije komponente sa prinosom zrna. Klaster analiza je grupisala genotipove tvrde pšenice u najmanje dve velike grupe u uslovima bez stresa i u tri velike grupe u uslovima vodnog stresa. Prema tome, čini se da su dobri kandidati za povećanje prinosa zrna u uslovima bez stresa, genotipovi G1, G3, G4, G6, G8 i G13 i u uslovima sa vodnim stresom, genotipovi G3, G8, G10 i G14. Na kraju, za povećanje prinosa zrna u uslovima oba tipa vlažnosti, se mogu koristiti genotipovi G3 i G8.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.2298/JAS1502119A
objavljen u SCIndeksu: 25.06.2015.
metod recenzije: dvostruko anoniman