Farming and Management
  • Year: 2018
  • Volume: 3
  • Issue: 1

Standard heterosis for grain yield in maize hybrids

1National Maize Research Program, Rampur, Chitwan, Nepal

2Nepal Agricultural Research Council, Singh Durbar Plaza, Kathmandu, Nepal.

3National Commercial Agriculture Research Program, Pakhribas, Dhankuta, Nepal.

*E-mail: jibshrestha@gmail.com

Online published on 14 August, 2018.

Abstract

Determination of heterosis in maize hybrids is necessary for their commercial exploitation. Data derived from several experiments, namely, Coordinated Varietal Trial-Hybrid (CVTH), Diallel Crosses, Observation Nurseries (OBN), Top Crosses and Test Crosses conducted at Rampur (Chitwan) and Parwanipur (Bara), Nepal were complied to determine heterosis and identify high yielding hybrids. The maize hybrids, namely, RML-4/RML-7, RML-5/NML-1, NML-2/RML-6, RML-6/RML-7, RML-5/RL-47, RML-8/RL-47, RML-5/RML-8, NML-1/RML-17, RML-7/RML-18, RML-6/RML-18 and RML-5/NML-1 produced high heterosis (greater than 40%) indicating these hybrids superior for commercial cultivation.

Keywords

Grain yield, heterosis, maize hybrids