Grain yield stability among maize hybrids of different fao maturity groups

Abstract

In this paper we investigated stability (phenotypic plasticity) for grain yield among different FAO maturity groups of maize hybrids (FAO 400 to 700). Twenty five hybrids in each maturity group were tested in a randomized complete block design at six different locations in 2002. The proportion of the location + hybrid x location interaction sum of squares on the total sum of squares within each FAO group were used for evaluation of phenotypic plasticity. The better performance of yield stability and approximately the same yield potential of the ten top yielded hybrids of the FAO 400 and FAO 500 groups versus FAO 600 and FAO 700 ones, are recommended that groups of hybrids for a commercial production.

U ovom radu proučavana je fenotipska plastičnost za prinos zrna hibrida kukuruza različitih FAO grupa zrenja (400 do 700). Korišćeni su rezultati predkomisijskih ogleda sa 6 različitih lokaliteta u 2002. godini. Procena fenotipske plastičnosti vršena je na osnovu proporcije zbira sume kvadrata ANOV-a lokaliteta i interakcije hibrid x lokalitet, u ukupnoj sumi kvadrata za svaku FAO grupu zrenja. Veća fenotipska plastičnost i približno podjednak prinos zrna (t/ha) hibrida FAO grupa zrenja 400 i 500, u odnosu na grupe zrenja 600 i 700 favorizuju ove hibride za komercijalnu proizvodnju.