Preprint Article Version 1 This version is not peer-reviewed

Forage Performance and Detection of Marker Trait Associations with Potential for Napier Grass (Cenchrus Purpureus) Improvement

Version 1 : Received: 14 February 2020 / Approved: 15 February 2020 / Online: 15 February 2020 (15:01:37 CET)

How to cite: Habte, E.; Muktar, M.S.; Abdena, A.; Hanson, J.; Sartie, A.M.; Negawo, A.T.; Machado, J.; ledo, F.; Jones, C.S. Forage Performance and Detection of Marker Trait Associations with Potential for Napier Grass (Cenchrus Purpureus) Improvement. Preprints 2020, 2020020202 (doi: 10.20944/preprints202002.0202.v1). Habte, E.; Muktar, M.S.; Abdena, A.; Hanson, J.; Sartie, A.M.; Negawo, A.T.; Machado, J.; ledo, F.; Jones, C.S. Forage Performance and Detection of Marker Trait Associations with Potential for Napier Grass (Cenchrus Purpureus) Improvement. Preprints 2020, 2020020202 (doi: 10.20944/preprints202002.0202.v1).

Abstract

The evaluation of forage crops for adaptability and performance across production systems and environments is one of the main strategies used to improve forage production. To enhance the genetic resource base and identify traits responsible for increased feed potential of Napier grass, forty-five genotypes from EMBRAPA, Brazil, were evaluated for forage biomass yield and feed nutritional quality in a replicated trial under wet and dry season conditions in Ethiopia. The results revealed significant variation in forage yield and feed nutritional qualities among the genotypes and between the wet and dry seasons. Feed fibre components were lower in the dry season while crude protein, in vitro organic matter digestibility and metabolizable energy were higher. Based on the cumulative biomass yield and metabolizable energy yield, top performing genotypes were identified that are candidates for future forage improvement studies. Furthermore, the marker-trait association study identified diagnostic SNP and SilicoDArT markers and potential candidate genes that could differentiate high biomass yielding and high metabolizable energy genotypes in the collection.

Subject Areas

Napier grass; elephant grass; EMBRAPA; forage yield; feed quality; marker trait association

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