Koffi et al Greener Journal of Agricultural Sciences Vol. 6 (4), pp. 134-144, April 2016. ISSN: 2276-7770 Research Paper Manuscript Number: 020416032 (DOI: http://doi.org/10.15580/GJAS.2016.4.020416032) Morphological Diversity among 18 Genitors of Vanuatu Tall (VTT) Coconut (Cocos nucifera L.) Population used in Crosses for Hybrids Resistant to Lethal Yellowing Disease Selection at Port-Bouët, Côte d’Ivoire Koffi Eric-BZ*1,2, Yao SDM3, Sie RS1, Konan KJL2, Koffi Y1,2, Doh F1,2, Issali AE2, Allou K2 1UFR Sciences de la Nature, Nangui Abrogoua University, 02 BP 801 Abidjan 02, Côte d’Ivoire. 2Marc Delorme Research Station, CNRA, 07 BP 13 Abidjan 07, Côte d’Ivoire. 3UFR des Sciences Biologiques, Peleforo Gon Coulibaly University, BP 1328 Korhogo, Côte d’Ivoire. Abstract Genetic control by creation of the coconut varieties expressing both Lethal Yellowing (LY) disease resistance and good agronomic performances led breeders to select in Tall populations which contain large diversity, some peculiar palms used as genitors. Thus, 18 genotypes of Vanuatu Tall (VTT) coded from G1 to G18 were described from 30 quantitative descriptors assessed on the coconut organs that are stem, leaf, inflorescence and fruit. The results showed that these 18 VTT genotypes were divided into two agro-morphological clusters: (i) genotypes providing large nuts with heavy components and (ii) the genotypes characterized by small fruit with weak component weights. Therefore, the genotypes that belong to first cluster G1, G4, G6, G7, G8, G9, G11, G13, G14, G16, G17 and specially G15 which also exhibited a vegetative robustness. could be selected as parent palms and involved in crosses with Dwarf or Tall coconut populations to develop hybrids that are potentially resistant to LY disease and producing large fruits with heavy components. Keywords: Coconut palms, genitor VTT, genotype, morphological trait, Lethal Yellowing (LY) disease, selection, Côte d’Ivoire. Return to Content View [Full Article – PDF] [Full Article – HTML] [Full Article – EPUB] Post-review Rundown View/get involved, click [Post-Review Page] References Baudouin L. and Santos G., (2005). Morphometric methodes of determining diversity in coconut. In Coconut Genetic Resources: Batugal P, Ramanatha Rao V, Olivier J (eds). International Plant Genetic Resources Institute: Selangor DarulEhsan, Malaisie; 209 – 224. Bourdeix R., Konan J.L. and Labouisse J.P., (2010). Vanuatu Tall (VTT). In: Batugal P, Bourdeix R, Olivier JT, George MLC, editors. Catalogue of conserved coconut germplasm. International, Regional Office for Asia, the Pacific and Oceania, Serdang, Selangor Darul Ehsan, Malaysia: 292-293. Bourdeix R., Konan J.L. and N’cho Y.P., (2005). Cocotier, guide des variétés traditionnelles et améliorées. CIRAD /CNRA ISBN 2-9525-4080-2, Montpellier (France), 58p. De Nuce L. and Wuidart W., (1982). L’observation des caractéristiques de développement végétatif, de floraison et de production chez le cocotier. Oléagineux, 37 (6) : 291-300. Dollet M., Jannot C., Baudouin L. and Cirad J.O., (2009). Le cocotier en Afrique et la maladie du jaunissement mortel. OCL, 16 (2): 74-75. Gunn B.F., Baudouin L. and Olsen K.M., (2011). Independent Origins of Cultivated Coconut (Cocos nucifera L.) in the Old World Tropics. PLoS ONE 6(6): e21143, 8p. Harries C., (1981). Identification pratique des variétés de cocotier. Oléagineux, 36 (2) : 62-79. Kanniah J., (2005). Village-level production of high-value coconut products to enhance incomes of resource-poor coconut farmers. Coconut hybrids for smallholders. CFC / IPGRI, Amsterdam (Netherlands): 209-235. Konan J.L. and Allou K.R., (2006). Jaunissement mortel du cocotier. Rapport de mission (Ghana 24-30 septembre 2006). Projet FSP, OPRI (Ghana)/CIRAD (France). 15p. Konan J.L., (2005). Status of coconut genetic resources research in Côte d’Ivoire. Coconut genetic resources, edition Future Harvest ISBN 92-9043-629-8, IPGRI, Selangor Darul Ehsan (Malaisie): 654-660. Konan J.L., Bourdeix R., Sangare A., Mondeil F., (2006). Caractérisation de quelques cultivars de cocotier (Cocos nucifera L.) tolérant à la sécheresse en Côte d’Ivoire. Agronomie Africaine 18 (2) : 145-156. Konan J.L., Sie S.R., N’guetta S.P, Lekadou T.T. and Allou K., (2010). Assessment of vegetative growth and production of new improved coconut (Cocos nucifera L.) hybrids. Journal of Applied Biosciences 26: 1664-1674. Konan J.L., 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. New Disease Reports 28, 3. Konan K.J.N., Konan J.L., Koffi K.E., Lebrun P. and Sangare A., (2007). Coconut Microsatellite gene diversity analysis technology transfer to Côte d’Ivoire. Biotechnology 6 (3) : 383-388. Le Saint J.P. and De Nuce L.M., (1987). Les hybrides de cocotiers nains : Performances et intérêt. Oléagineux, 42 (10) : 353-362. Oropeza C., Escamilla J.A., Mora G., Zizumbo D. and Harrison N.A., (2005). Coconut lethal yellowing. Coconut genetic resources, edition Future Harvest ISBN 92-9043-629-8, IPGRI, Selangor Darul Ehsan (Malaisie) : 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. Sangare A., Le Saint J.P., De Nuce L., (1988). Hybride de cocotiers prometteurs PB-122, PB-132, PB-214. Oléagineux, 43 (5) : 207-215. Sangare A. De Taffin G., De Franqueville H., Arkhust E.D. and Pomier M., (1992). Le jaunissement mortel du cocotier au Ghana. Premier résultats sur le comportement au champ du matériel végétal. Oléagineux, 47 (12): 699-704. StatSoft France, (2005). Statistica, logiciel d’analyse de données version 7.1. www.statsoft.fr. Sugimura Y., Itano M., Salud C., Otsuji K. and Yamaguchi H., (1997). Biometric analysis on diversity of coconut palm: cultivar classification by botanical and agronomical traits. Euphytica 98: 29 -35. Van Der Vossen, H.A.M. and Chipungahelo G.S.E., (2007). Cocos nucifera L. In: van der Vossen, H.A.M., Mkamilo, G.S. (Editeurs). PROTA 14 : Vegetable oils/Oléagineux. [CD-Rom]. PROTA, Wageningen, Pays Bas. Yao S.D.M., (2014). Impact de la régénération de la collection internationale de cocotier (Cocos nucifera L.) pour l’Afrique et l’Océan indien sur la diversité agromorphologique et moléculaire. PhD thesis, Nangui Abrogoua University, Côte d’Ivoire ; 162 p. Yao S.D.M., Konan J.L., Sie R., Diarrassouba N., Lekadou T.T., Koffi E.BZ., Yoboue K., Bourdeix R., Issali A.E., Doh F., Allou K. and Zoro Bi I.A., (2015). Fiabilité d’une liste minimale de descripteurs agromorphologiques recommandée par le COGENT dans l’étude de la diversité génétique du cocotier (Cocos nucifera L.). Journal of Animal and Plant Sciences, 26 (1): 4006-4022.
