Use of floral descriptors to study variability in wild cocoa trees (Theobroma cacao L.) in French Guiana
155 clones of wild cocoa trees (Theobroma cacao L.) in French Guiana, belonging to 16 populations identified by surveyors in two different river basins (three sub-basins), along with four international clones used as controls, were characterized with four floral descriptors: petal ligule width, sepa...
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Veröffentlicht in: | Genetic resources and crop evolution 1999-10, Vol.46 (5), p.491-500 |
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description | 155 clones of wild cocoa trees (Theobroma cacao L.) in French Guiana, belonging to 16 populations identified by surveyors in two different river basins (three sub-basins), along with four international clones used as controls, were characterized with four floral descriptors: petal ligule width, sepal width, gynoecium length and number of ovules per ovary. The data underwent an analysis of variance and a factorial discriminant analysis, and the Mahalanobis distances between the populations were calculated. Significant differences existed between the populations for the four descriptors and the discriminant analysis revealed two main groups among the Guianan cocoa trees. It also isolated them from the controls. The populations in the two basins were not homogeneous, and the sub-basin of origin did not seem to be the main factor structuring the variability of the study populations. There proved to be substantial genotypic variability in the Guianan material for the floral descriptors. Variation within the same family (trees derived from the same pod) was low. |
doi_str_mv | 10.1023/A:1008763321959 |
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(CIRAD, Abidjan (Cote d'Ivoire).) ; Bonnot, F ; Oliver, G</creator><creatorcontrib>Lachenaud, P. (CIRAD, Abidjan (Cote d'Ivoire).) ; Bonnot, F ; Oliver, G</creatorcontrib><description>155 clones of wild cocoa trees (Theobroma cacao L.) in French Guiana, belonging to 16 populations identified by surveyors in two different river basins (three sub-basins), along with four international clones used as controls, were characterized with four floral descriptors: petal ligule width, sepal width, gynoecium length and number of ovules per ovary. The data underwent an analysis of variance and a factorial discriminant analysis, and the Mahalanobis distances between the populations were calculated. Significant differences existed between the populations for the four descriptors and the discriminant analysis revealed two main groups among the Guianan cocoa trees. It also isolated them from the controls. The populations in the two basins were not homogeneous, and the sub-basin of origin did not seem to be the main factor structuring the variability of the study populations. There proved to be substantial genotypic variability in the Guianan material for the floral descriptors. 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It also isolated them from the controls. The populations in the two basins were not homogeneous, and the sub-basin of origin did not seem to be the main factor structuring the variability of the study populations. There proved to be substantial genotypic variability in the Guianan material for the floral descriptors. Variation within the same family (trees derived from the same pod) was low.</description><subject>Basins</subject><subject>Cocoa</subject><subject>Cocoa industry</subject><subject>Discriminant analysis</subject><subject>FLEUR</subject><subject>FLORES</subject><subject>FLOWERS</subject><subject>FRENCH GUIANA</subject><subject>Genetic variability</subject><subject>GENETIC VARIATION</subject><subject>GERMOPLASMA</subject><subject>GERMPLASM</subject><subject>GUAYANA FRANCESA</subject><subject>GUYANE FRANCAISE</subject><subject>Ovules</subject><subject>PLANTAS SILVESTRES</subject><subject>PLANTE SAUVAGE</subject><subject>Population studies</subject><subject>Populations</subject><subject>River basins</subject><subject>Rivers</subject><subject>THEOBROMA CACAO</subject><subject>Trees</subject><subject>VARIACION GENETICA</subject><subject>Variance analysis</subject><subject>VARIATION GENETIQUE</subject><subject>WILD PLANTS</subject><issn>0925-9864</issn><issn>1573-5109</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNotzcFLwzAYBfAgCs7p2ZMQ8KKHzuRLkzbexnBTKHrZzuVrmriM2sykU_bfuzHf5V1-vEfILWcTzkA8TZ85Y2WhhACupT4jIy4LkUnO9DkZMQ0y06XKL8lVShvGmC5UOSLrVbI0OOq6ELGjrU0m-u0QYqJDoGnYtXv6g9Fj4zs_7Knv6a_vWmqCCUiHaG2iD8u1DU0MX0gNGgy0mjwe4Tza3qzpYuexx2ty4bBL9ua_x2Q1f1nOXrPqY_E2m1aZgVwPWdE2EsEqKJ3RFgoHyghA1WqjGmgKxVFZKLXgrsUil6aVwJvSGAXKWWbEmNyfdrcxfO9sGupN2MX-cFkDSF1ynhfsoO5OymGo8TP6VL9XwI4BzkH8AeLpYbI</recordid><startdate>19991001</startdate><enddate>19991001</enddate><creator>Lachenaud, P. 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(CIRAD, Abidjan (Cote d'Ivoire).) ; Bonnot, F ; Oliver, G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c249t-7db5a2e628fc9e27f26c32a6d9c6b2b761a6e28931fda745cd521b8cc626fe0c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Basins</topic><topic>Cocoa</topic><topic>Cocoa industry</topic><topic>Discriminant analysis</topic><topic>FLEUR</topic><topic>FLORES</topic><topic>FLOWERS</topic><topic>FRENCH GUIANA</topic><topic>Genetic variability</topic><topic>GENETIC VARIATION</topic><topic>GERMOPLASMA</topic><topic>GERMPLASM</topic><topic>GUAYANA FRANCESA</topic><topic>GUYANE FRANCAISE</topic><topic>Ovules</topic><topic>PLANTAS SILVESTRES</topic><topic>PLANTE SAUVAGE</topic><topic>Population studies</topic><topic>Populations</topic><topic>River basins</topic><topic>Rivers</topic><topic>THEOBROMA CACAO</topic><topic>Trees</topic><topic>VARIACION GENETICA</topic><topic>Variance analysis</topic><topic>VARIATION GENETIQUE</topic><topic>WILD PLANTS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lachenaud, P. (CIRAD, Abidjan (Cote d'Ivoire).)</creatorcontrib><creatorcontrib>Bonnot, F</creatorcontrib><creatorcontrib>Oliver, G</creatorcontrib><collection>AGRIS</collection><collection>ProQuest Central (Corporate)</collection><collection>Agricultural Science Collection</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Biological Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><jtitle>Genetic resources and crop evolution</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lachenaud, P. (CIRAD, Abidjan (Cote d'Ivoire).)</au><au>Bonnot, F</au><au>Oliver, G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Use of floral descriptors to study variability in wild cocoa trees (Theobroma cacao L.) in French Guiana</atitle><jtitle>Genetic resources and crop evolution</jtitle><date>1999-10-01</date><risdate>1999</risdate><volume>46</volume><issue>5</issue><spage>491</spage><epage>500</epage><pages>491-500</pages><issn>0925-9864</issn><eissn>1573-5109</eissn><abstract>155 clones of wild cocoa trees (Theobroma cacao L.) in French Guiana, belonging to 16 populations identified by surveyors in two different river basins (three sub-basins), along with four international clones used as controls, were characterized with four floral descriptors: petal ligule width, sepal width, gynoecium length and number of ovules per ovary. The data underwent an analysis of variance and a factorial discriminant analysis, and the Mahalanobis distances between the populations were calculated. Significant differences existed between the populations for the four descriptors and the discriminant analysis revealed two main groups among the Guianan cocoa trees. It also isolated them from the controls. The populations in the two basins were not homogeneous, and the sub-basin of origin did not seem to be the main factor structuring the variability of the study populations. There proved to be substantial genotypic variability in the Guianan material for the floral descriptors. Variation within the same family (trees derived from the same pod) was low.</abstract><cop>Dordrecht</cop><pub>Springer Nature B.V</pub><doi>10.1023/A:1008763321959</doi><tpages>10</tpages></addata></record> |
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subjects | Basins Cocoa Cocoa industry Discriminant analysis FLEUR FLORES FLOWERS FRENCH GUIANA Genetic variability GENETIC VARIATION GERMOPLASMA GERMPLASM GUAYANA FRANCESA GUYANE FRANCAISE Ovules PLANTAS SILVESTRES PLANTE SAUVAGE Population studies Populations River basins Rivers THEOBROMA CACAO Trees VARIACION GENETICA Variance analysis VARIATION GENETIQUE WILD PLANTS |
title | Use of floral descriptors to study variability in wild cocoa trees (Theobroma cacao L.) in French Guiana |
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