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Accueil du site → Doctorat → Brésil → Caracterização da variabilidade morfoagronômica de maracujazeiro (Passiflora cincinnata Mast.) no semi-árido brasileiro

Universidade Estadual Paulista (2007)

Caracterização da variabilidade morfoagronômica de maracujazeiro (Passiflora cincinnata Mast.) no semi-árido brasileiro

Araújo, Francisco Pinheiro de

Titre : Caracterização da variabilidade morfoagronômica de maracujazeiro (Passiflora cincinnata Mast.) no semi-árido brasileiro

Auteur : Araújo, Francisco Pinheiro de

Université de soutenance : Universidade Estadual Paulista

Grade : Doutorado (2007)

Résumé
The present work was developed aiming at evaluating the morphoagronomic variability of Passiflora cincinnata Mast., which is distributed in different agroecological regions in Northeast Brazil. Data from 32 characters were used in experiments, carried out at Embrapa Tropical Semi-Arid, Petrolina-PE, Brazil, in a randomized complete block design with four replications. The behaviour of accesses was evaluated by univariate analysis and the studies related to the genetic diversity were done based on the multivariate procedures, using the general distance of Mahalanobis (Dø) and the grouping technique by canonic variables. The graphic dispersion of the accesses used the first canonic variables as axis. The strategies for collecting the accesses of P. cincinnata proved to be effective because the collected accesses showed genetic variability for all the descriptors used in the evaluation. The most important characters for the discrimination among accesses were : stem diameter (SD), number of leaf glands (NLG), number of glands per bract (NGB), pollen viability (PV), fruit mass (FM), seed mass (SM) and total fruit mass (TFM). However, as the environment influences the characters, the accesses must be evaluated in more than one environment. Grouping of accesses based on their genetic variability was not correlated with their geographic origin. Since some accesses showed high fruit productivity, they can be recommended to farmers for experimental growing

Mots clés  : Maracuja - Morfologia - Pernambuco ; Passiflora - Pernambuco ; Germoplasma vegetal - Recursos - Pernambuco ; Plant germplasm resources ; Passiflora ; Passion fruit - Morphology

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Page publiée le 8 décembre 2015, mise à jour le 4 juillet 2017