Ortiz Rios, Rodomiro Octavio
- Department of Plant Breeding, Swedish University of Agricultural Sciences
Abstract
Rice is a staple food in West Africa, where its demand keeps increasing due to population growth. Hence, there is an urgent need to identify high yielding rice cultivars that fulfill this demand locally. Rice hybrids are already known to significantly increase productivity. This study evaluated the potential of Asian hybrids with good adaptability to irrigated and rainfed lowland rice areas in Mali, Nigeria, and Senegal. There were 169 hybrids from China included in trials at target sites during 2009 and 2010. The genotype x environment interaction was highly significant (p < 0.0001) for grain yield indicating that the hybrids' and their respective cultivar checks' performance differed across locations. Two hybrids had the highest grain yield during 2010 in Mali, while in Nigeria, four hybrids in 2009 and one hybrid in 2010 had higher grain yield and matured earlier than the best local cultivar. The milling recovery, grain shape and cooking features of most hybrids had the quality preferred by West African consumers. Most of the hybrids were, however, susceptible to African rice gall midge (AfRGM) and Rice Yellow Mottle Virus (RMYV) isolate Ng40. About 60% of these hybrids were resistant to blast. Hybrids need to incorporate host plant resistant for AfRGM and RYMV to be grown in West Africa.
Keywords
Oryza sativa; adaptability; food security; genotype x environment interaction; grain yield; heterosis; hybrid vigor; quality; resilience; sustainability
Published in
Diversity
2017, volume: 9, number: 3, article number: 27
SLU Authors
Associated SLU-program
SLU Plant Protection Network
Global goals (SDG)
SDG2 Zero hunger
SDG17 Partnerships for the goals
UKÄ Subject classification
Genetics and Breeding in Agricultural Sciences
Publication identifier
- DOI: https://doi.org/10.3390/d9030027
Permanent link to this page (URI)
https://res.slu.se/id/publ/83559