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Forskningsartikel2017Vetenskapligt granskadÖppen tillgång

Putting Plant Genetic Diversity and Variability at Work for Breeding: Hybrid Rice Suitability in West Africa

El-Namaky, Raafat; Coulibaly, Mamadou M. Bare; Alhassan, Maji; Traore, Karim; Nwilene, Francis; Dieng, Ibnou; Ortiz, Rodomiro; Manneh, Baboucarr

Sammanfattning

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.

Nyckelord

Oryza sativa; adaptability; food security; genotype x environment interaction; grain yield; heterosis; hybrid vigor; quality; resilience; sustainability

Publicerad i

Diversity
2017, Volym: 9, nummer: 3, artikelnummer: 27

    Associerade SLU-program

    SLU Nätverk växtskydd

    Globala målen

    Avskaffa hunger, uppnå tryggad livsmedelsförsörjning och förbättrad nutrition samt främja ett hållbart jordbruk
    Stärka genomförandemedlen och återvitalisera det globala partnerskapet för hållbar utveckling

    UKÄ forskningsämne

    Genetik och förädling

    Publikationens identifierare

    DOI: https://doi.org/10.3390/d9030027

    Permanent länk till denna sida (URI)

    https://res.slu.se/id/publ/83559