Assessment of the agronomic performance of Malayan Yellow Dwarf × Vanuatu Tall coconut (Cocos nucifera L.) hybrid variety tolerant to lethal yellowing disease of Ghana in Côte d’Ivoire.
Abstract
This article aims to study the agronomic performance of 18 hybrid progenies of coconut MYD x VTT and their parents VTT in Côte d'Ivoire. The evaluation was focused on the number of bunches per year (Nbb), the number of fruits per year (NBFR), copra produced per tree per year (Cop / tree / year) and per hectare per year (Cop / hectare / year). It appears from this work that the hybrids MYD x VTT produces 9 to 11 bunches and 76 to 121 fruits, per year with the weight of 12.54 to 19.82 kg of copra per tree and 2.01 and 3.17t of copra per hectare. These values are statistically equal to those of PB121+ used as a control in the study. Progenies of d5 , d6 , d8 , d11, d12, d15 and d18 give the best yields and similar to the control PB121+. VTT Parent produce an average of 11 bunches 96 fruits, and 11.62 kg of copra per tree and 1.66 t of copra per hectare per year. Parent G1, G 4, G6, G7, G12, G15 and G16 have the best yield. Heterosis effects were observed for copra tree (42.08%) and copra per hectare (50.04%). Parents that have better yields with best progenies can be selected for the seed production of MYD x VTT (tolerant and good yield). MYD x VTT hybrid results are advised to Ivorian and Ghanaian farmers to prevent expansion of this disease.
References
Assa RRA, Konan JL, Nemlin J, Prades A, Agbo N and Sie RS. 2006. Diagnostic de la cocoteraie paysanne du littoral ivoirien. Sciences et nature 3(2): 113-120.
Bonnot F, Danyo G, Philippe R, Dery S and Ransford A. 2009. Preliminary results on epidemiology of Coconut Lethal Yellowing in Ghana.Oléagineux, Corps Gras, Lipides.16(2):116-122.
Bourdeix R, Konan JL and N’cho YP. 2005a. Cocotier, guide des variétés traditionnelles et améliorées. Co-production CIRAD /CNRA, edition diversiflora; Montpellier (France). 58p.
Bourdeix R, Baudouin L and Konan JL. 2005b. Coconut hybrids developed by CIRAD and its partner institutions. In Coconut Hybrids for Smallholders: Batugal P, Dante B, Oliver J. (eds). CFC technical paper No.42.Chapter. II: other experiences related to coconut hybrid development, Common Fund for Commodities / International Plant Genetic Resources. Institute (CFC / IPGRI): Amsterdam, Netherlands. 111-131.
Bourdeix R et Konan JL. 2005. Coconut hybrid trials in Côte d’Ivoire. Coconut hybrids for smallholders CFC technical paper No.42.Chapter.I: results of the Common Fund for Commodities-funded multilocation hybrid trials project, Common Fund for Commodities / International Plant Genetic Resources Institute (CFC/IPGRI), Amsterdam (Netherlands). 26-51.
Bourdeix R, N’cho YP, Sangare A, Baudoin L and De Nuce De Lamothe M. 1992. L’hybride de cocotier PB 121 amélioré, croisement du nain Jaune Malaiset de géniteurs grand Ouest-Africain sélectionnés. Oléagineux.47(11) : 619-633.
Dery SK, Owusu Nipah J, Andoh-Mensah E, Nuertey BN, Nkansah Poku J, Arthur R and Philippe R. 2005. On-farm evaluation of the coconut hybrid, Malayan yellow dwarf x Vanuatu tall for tolerance to the lethal yellowing disease of coconut in Ghana. Cord. 21 (1): 50-56.
Jayaraman K. 1999. Manuel de statistique pour la recherche forestière. FAO, Coopération Hollandaise, Commission Européenne. 239 P.
Konan Konan JL, Allou K, Atta Diallo H, Saraka Yao D, Koua B, Kouassi N, Benabid R, Michelutti R, Scott J and Arocha-Rosete Y. 2013. First report on the molecular identification of the phytoplasma associated with a lethal yellowing-type disease of coconut palms in Côte d’Ivoire.NewDiseaseReports.28 :3.
Konan JL. 2002. Le programme cocotier :Pilier du développement de la filière cocotier. Atelier bilan des programmes de recherches. Centre National de Recherche Agronomique, Direction Générale Abidjan (Côte d’Ivoire). 15p.
Labouisse J.-P, Sileye T, Morin J.-P, Hamelin C, Baudouin L, Bourdeix R and Rouziere A. 2005. Coconut (Cocosnucifera L.) genetic improvement in Vanuatu: Overview of research achievements from 1962 to 2002. Part 2: Improvement of the Vanuatu Tall by hybridization. Oléagineux, Corps Gras, Lipides.12 (2): 170-179.
Lu H, Romero-Severson J and Bernardo R. 2003. Genetic basis of heterosis explored by simple sequence repeat markers in a random-mated maize population.Theor Appl Genet. 107(3): 494–502.
Oropeza C, Escamilla JA, Mora G, Zizumbo D and Harrison NA. 2005. Coconut lethal yellowing. In Coconut genetic resources, edited by Batugal p., Ramanatha Rao V., et Oliver J, IPGRI, Selangor Darul Ehsan (Malaysia).349-363.
Rohde W, Kullaya A, Mpunami A and Becker D. 1993. Rapid and sensitive diagnosis of mycoplasma like organisms associated with lethal disease of coconut palm by a specially primed polymerase chain reaction for the amplification of 16S rDNA. Oléagineux. 48 (7): 319-322.
Roupsard O, Bonnefond JM and Luyssaert S. 2007. Productivity of a tropical plantation of coconut tree (Cocosnucifera L.) compared with tropical evergreen humid forests. AsiaFlux Newsletter. 23: 4-9.
Wuidart W and Rognon F. 1981. La production de semences de cocotier. Oléagineux.36 (3) : 131-134.
Van Der Vossen HAM and Chipungahelo GSE. 2007. Cocosnucifera L. In: van der Vossen, H.A.M. &Mkamilo, G.S. (Editors). PROTA 14: Vegetable oils/Oléagineux. [CD-Rom]. PROTA, Wageningen, Pays Bas.
Verrier E, Brabant P and Gallais A. 2001. Faits et concepts de base en génétique quantitative. Polycopié INA Paris-Grignon.2001 ; 134
