Selekcija i Semenarstvo (Jan 2000)
The zonation of the Zemun Polje maize hybrids
Abstract
The present study encompasses the three-year results of macro trials with 17 ZP maize hybrids in 12 out of 13 introduced regions. The trials were carried out by agricultural farms, stations and institutes with the aim to select the top yielding and the most stable hybrids for a certain growing region. Due to favorable climatic conditions of 1997 and 1999 and greater genetic yield potential, the yields per area unit of medium late maturity hybrids the majority of regions were higher than the yields of medium early and medium maturity hybrids. The following medium late maturity hybrids were among the best yielding ones: ZP 735, ZP 680 and ZP 677. According to the obtained yield, the hybrid ZP 735 ranked the first, second and fifth in three, two and one region, respectively. The hybrid ZP 680 ranked the first in five regions and the second in two regions. The hybrid ZP 677 ranked the first in two regions, the second, third and fourth in two regions each and the fifth in one region. The hybrids ZP 580 (ranking the second and fourth in two regions each and the third in four regions) and ZP 570 (ranking the third in two regions, the fourth and fifth in two and one region, respectively) were the best yielding medium maturity hybrids. The hybrids ZP 434, ZP 480 and ZP 42A were the top yielding medium early maturity hybrids. .
