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2018, vol. 63, br. 2, str. 139-152
Interakcija genotipa i spoljašnje sredine indukovana vlagom zemljišta za zapreminu korena brdskog pirinča
Olabisi Onabanjo University, Faculty of Agricultural Production and Renewable Resources, College of Agricultural Sciences, Department of Crop Production, Yewa Campus, Ayetoro, Ogun State, Nigeria

e-adresaadesola.nassir@oouagoiwoye.edu.ng
Ključne reči: GGE; tolerantnost na sušu; prinos zrna; Oryza sativa; Oryzaglaberrima; stabilnost
Sažetak
Šesnaest genotipova pirinča koji su obuhvatali komercijalne sorte, nedavno priznate sorte i oplemenjivačke linije gajeno je u stakleniku pri različitim nivoima vlage, dobijenih kombinacijom količine vode i broja zalivanja. Cilj ispitivanja je bio interakcija genotipa i spoljašnje sredine (engl. genotype-by-environment interaction GEI) za zapreminu korena (engl. Root volumen RV), kako bi se utvrdio nivo vlage, koji bi bio adekvatan za ispitivanje genotipova za odgovor na stres izazvan vlagom. U simuliranim spoljašnjim sredinama, WAB 880-9-32-1-1- 12-HB je imao najveću zapreminu korena - 8,71 cm3 , dok je ITA 257 imao najnižu (4,89 cm3 ) zapreminu korena. Genotip (G) je obuhvatio značajnih (P < 0,001) 10,6%, spoljašnja sredina € (P <0,001) 79,0%, a GEI (P < 0,001) 10,4% ukupne sume kvadrata variranja. GGE biplot je bio zasnovan na 82% od G+GE, i spoljašnje sredine su grupisane u dve grupe, sa OS 6 kao najboljim za RV u spoljašnjoj sredini sa prirodnim padavinama (E10). Za WAB 880-9-32-1-1-12-HB je utvrđen najbolji RV u sredinama sa optimalnom do ograničavajućom vlagom, ali je bio manje stabilan, i sa prinosom zrna (13,5 g/biljci) blizu najboljih proseka 16,0 g/biljci (ITA 150) i 14,1 g/biljci (IRAT 170). Spoljašnje sredine su bile pozitivno korelisane sa vegetativnim osobinama i komponentama prinosa, ali je E2 (100% potreba za vlagom primenjena jednom u dve nedelje) bila reprezentativnija za uslove vlažnog stresa, dok je E10 (sredina sa prirodnim padavinama) bila veoma diskriminativna, te bi bila odgovarajuća za odbacivanje genotipova sa lošim RV. E1, E2, E4 i E7 su prepoznati kao nivoi vlage koji su prikladni za odabir genotipova za opštu adaptaciju za RV u okviru sveukupnog cilja oplemenjivanja pirinča tolerantnog na sušu.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.2298/JAS1802139N
objavljen u SCIndeksu: 09.08.2018.
metod recenzije: dvostruko anoniman
Creative Commons License 4.0

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