Performance of single-cross maize hybrids from several cross combination of inbred lines

Abstract

Dewi-Hayati PK, Sutoyo, Prasetyo TB. 2016. Performance of single cross maize hybrids from several cross combination of inbred lines. Pros Sem Nas Masy Biodiv Indon 2: 165-168. The objectives of the study were to evaluate some single cross maize hybrids from several cross combination of parental inbred lines and to obtain maize hybrids that perform good agronomic traits and high yield potential. The evaluation of 12 single-cross hybrids, 2 commercial hybrids, and one composite variety was conducted in West Pasaman District, the main producer of maize in West Sumatra Province from April to August 2015. The experiment was arranged in a Randomized Complete Block design with three replications. The seeds were sown in plot consisted of four plant rows with the length of 3 meters and spaced at 75 cm apart inter-rows and 25 cm apart within rows. The cultivation was conducted by following a standard cultural practice. Data were analyzed by using a variance F-test, whereas the mean comparisons were performed by using Tukey test at 5% level of the Statistical Analysis System (SAS) computer software. The results showed that several combinations of crosses performed agronomic traits and yield similarly to the commercial hybrids. The hybrids evaluated also performed a high heterosis both on agronomic and yield traits. Several single-cross hybrids, i.e., H80, H140, H170 and H185, had high yield around 8.5 t/ha, hence they had an opportunity for further development and evaluation in multi-location trials.