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On-farm banana (Musa) cultivar diversity status across different altitudes in North and South Kivu provinces of eastern Democratic Republic of Congo

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Title On-farm banana (Musa) cultivar diversity status across different altitudes in North and South Kivu provinces of eastern Democratic Republic of Congo
 
Creator Ocimati, W.
Karamura, D.
Sivirihauma, Charles
Ndungo, V.
Langhe, E. de
Adheka, J.
Dheda Djailo, B.
Ntamwira, J.
Muhindo, H.
Ragama, P.E.
Blomme, Guy
 
Subject genetic erosion
varieties
selection criteria
germplasm conservation
farms
horticulture
 
Description A Musa germplasm diagnostic study assessed on-farm Musa diversity and farmer selection criteria in different altitudes of North Kivu (NK) and South Kivu (SK) in eastern Democratic Republic of Congo, an important zone of secondary diversification of plantains (AAB genome) and East African highland bananas (EAHB, AAA genome). Diversity was defined using the indices of richness and dominance/evenness. More cultivars (35) were recorded in SK compared to NK (32). However, NK sites had higher cultivar evenness compared with SK. For example, 21 cultivars were grown widely (in three localities) in NK compared with 12 in SK. Long-term on-farm Musa diversity conservation will hence be easier in NK. Cooking EAHB cultivars (35% of Musa landscape) dominated in NK, followed by beer (27%, EAHB + ABB), plantain (21%) and dessert (AAB + AAA, 17%) cultivars. Cooking cultivars were grown across all altitudes, while beer types dominated at the higher altitudes of Munoli (1,733 m) and plantains at the low altitudes in Mutwanga (1,049 m) and Mangodomu (969 m). SK, with predominantly high altitudes (1,553 to 1,992 m), was dominated by beer types (72%). 'Vulambya' (EAHB cooking, 22%), 'Nguma' (plantain, 13%), 'Tundu' (EAHB beer, 10%), 'Pisang Awak' (ABB genome, Pisang Awak subgroup, beer, 8%), and 'Mukingiro' (EAHB beer, 7%) dominated in NK, while 'Nshikazi' (EAHB beer, 66%) dominates in SK. Tolerance of infertile soil, pest and disease resistance and availability of planting materials were key farmer selection criteria that influenced Musa diversity on-farm. Ex situ conservation of rare cultivars with limited cultural importance is recommended to prevent genetic erosion.
 
Date 2016-03
2016-04-19T13:16:18Z
2016-04-19T13:16:18Z
 
Type Conference Paper
 
Identifier Ocimati, W.; Karamura, D.; Sivirihauma, C.; Ndungo, V.; De Langhe, E.; Adheka, J.; Dheda, B.; Ntamwira, J.; Muhindo, H.; Ragama, P.; Blomme, G. (2016) On-farm banana (Musa) cultivar diversity status across different altitudes in North and South Kivu provinces of eastern Democratic Republic of Congo. In: Proceedings. IX International Symposium on Banana: ISHS-ProMusa Symposium on Unravelling the Banana's Genomic Potential. (Smith, M. et al (eds.)) Acta Horticulturae, 1114: p. 35-44. Leuven (Belgium) ISHS ISBN: 978-94-62611-08-5
978-94-62611-08-5
0567-7572
2406-6168
https://hdl.handle.net/10568/72953
https://doi.org/10.17660/ActaHortic.2016.1114.5
 
Language en
 
Relation https://hdl.handle.net/10568/72946
Acta Horticulturae
 
Rights Limited Access
 
Format p. 35-44
application/pdf
 
Publisher International Society for Horticultural Science