Stability parameters for grain yield and other agronomic traits of promising white maize hybrids

Abstract EN

Ten promising single crosses with two check hybrids SC10 and SC128 were evaluated at five different locations in Egypt i.e.

Sakha, Gemmeza, Sids, Nubaria and Mallawy Agricultural Research Stations in 2012 summer season.

The differences among locations were highly significant for all studied traits as well as the differences among hybrids and their interaction with location were significant or highly significant for all studied traits.

Linear and non-linear components were significant for all traits except for; variance linear for days to 50% silking.

A stable cross must be had desirable mean value, low values for; variance, coefficient of variability% and ecovalence, regression coefficient close to unity (bi=1) and deviation from regression as small as possible (S2di=0) also coefficient of determination more than 80%.

Therefore, SCSK146, SCSK151, SCSK154 were stable for earliness, SCSK150 and SCSK153 were stable for short plant height and two crosses SCSK146 and SCSK149 were stable for grain yield in addition to not significant than two checks for grain yield.