Sunflower mega-environments in Serbia revealed by GGE biplot analysis

Abstract

Sunflower mega-environment analysis was conducted for the grain yield data of 20 hybrids and 19 test locations during 2006, and 20 hybrids and 16 test locations during 2007. Combined data included 15 hybrids and 9 test locations common for both years and it was analyzed as balanced experiment. The analysis of variance components showed that hybrid by location interaction explained 2.74, 5.8, and 3.72 times more variation than hybrid, for grain yield, for 2006, 2007, combined data, respectively, and indicated potential mega-environment existence. Our results showed the existence of two mega-environments in Serbia sunflower growing region: (1) Kula Vitovnica, Aleksa Šantić, Sombor and (2) Rimski Šančevi, Kikinda. It has been concluded that if we want promising sunflower hybrids to be optimally used, they should be cropped differently for the two determined mega-environments.

Analiza mega-sredina suncokreta sprovedena je prema podacima prinosa zrna 20 hibrida i 19 test lokaliteta tokom 2006. i 20 hibrida i 16 test lokaliteta tokom 2007. Kombinovani podaci obuhvatili su 15 hibrida i 9 test lokaliteta, zajedničkih za obe godine istraživanja, pri čemu je analizirano kao izbalansirani eksperiment. Analiza komponenti varijanse pokazala je da interakcija hibrid puta lokalitet objašnjava 2,74, 5,8 i 3,72 puta više varijacija nego hibrid na prinos zrna za 2006. i 2007. u kombinovanim podacima, tim redom, i ukazuje na potencijalno postojanje mega-sredina. Naši rezultati su pokazali postojanje dve mega-sredine u reonima gajenja suncokreta u Srbiji: (1) Kula Vitovnica, Aleksa Šantić, Sombor i (2) Rimski Šančevi, Kikinda. Zaključeno je da ako želimo da perspektivni hibridi suncokreta budu optimalno iskorišćeni, moraju biti drugačije obrađeni za dve utvrđene mega-sredine.