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2016, vol. 61, br. 2, str. 113-125
Očekivana genetička dobit mase hiljadu zrna i broja zrna po klasu hlebne i durum pšenice
aUniverzitet u Beogradu, Poljoprivredni fakultet
bInstitut za kukuruz 'Zemun polje', Beograd-Zemun
cUniverzitet u Prištini sa privremenim sedištem u Kosovskoj Mitrovici, Poljoprivredni fakultet, Lešak

e-adresagbrankovic@agrif.bg.ac.rs
Projekat:
Izučavanje genetičke osnove poboljšanja prinosa i kvaliteta strnih žita u različitim ekološkim uslovima (MPNTR - 31092)

Sažetak
Ciljevi ovog istraživanja su bili da se prouči varijabilnost, komponente varijanse, heritabilnost u širem smislu (h2) i očekivana genetička dobit mase hiljadu zrna (MHZ) i broja zrna po klasu (BZK) za 15 genotipova hlebne pšenice i 15 genotipova durum pšenice. Poljski ogledi su izvedeni tokom 2010-2011. i 2011-2012. godine na tri lokaliteta: Rimski Šančevi, Zemun Polje i Padinska Skela. Rezultati istraživanja su pokazali da je genetička komponenta varijanse (σ2g) bila dominantna u fenotipskoj ekspresiji MHZ hlebne i durum pšenice i BZK hlebne pšenice. Komponenta fenotipske varijanse usled interakcije genotip × sredina (σ2ge) je bila 8,72 puta veća od σ2g za BZK durum pšenice i ukazala je na veću nestabilnost genotipova durum pšenice za tu osobinu. Koeficijent heritabilnosti je bio veoma visok (> 90%) za MHZ i BZK hlebne pšenice, visok za MHZ durum pšenice - 87,3% i nizak za BZK durum pšenice - 39,5%. Uzimajući u obzir visoke ostvarene vrednosti za h2 - 96,4% i za očekivanu genetičku dobit izraženu u procentima od proseka (GAM) - 19,3% za MHZ hlebne pšenice, moguće je predvideti uspeh selekcije pri oplemenjivanju navedene komponente prinosa. Uspeh selekcije se ne može predvideti za BZK durum pšenice zbog dobijenih niskih vrednosti za h2 i GAM od 39,5% odnosno 2,8%.
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O članku

jezik rada: srpski
vrsta rada: izvorni naučni članak
DOI: 10.2298/JAS1602113B
objavljen u SCIndeksu: 28.07.2016.
metod recenzije: dvostruko anoniman
Creative Commons License 4.0

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