Anatomia do escapo floral do cacaueiro (Theobroma cacao L) (Interpretação do fenômeno "pêco")
Palavras-chave:
escapo floral, base floral, almofada floral, caules secos, floração cacaueiraResumo
The cacao (Theobroma cacao L.) is a plant which blooms on the stem. Flowers emerge in there distinct regions on the stem: a) in leaf axils; b) in the axils of the branches along the entire length; c) in the middle or between prophylls of the branches.
When the flower-cluster emerge in close bunches, they may, in the course of development, merge into only one.
An inflorescence was divided, for the purposes of the study, into two parts.
The first was named the scape which has its origin in the periphery of the pith, and grows together with all of the tissues of the stem, but always maintaining its own individuality, and extends to the base of the flower-cluster, and therefore in the normal sense to the axis of the stem.
The second was named the flower-cluster, which has the form of a cone whose base is located in the periphery of the stem, and which is properly named an inflorescence since this is where the flowers are emited from.
Referências
BOUHARMONT, J., - Recherches cytologiques sur la fructification et l'incompatibilité chez Theobroma cacao L., Publications de l'Institut National pour 1'Etude agronomique du Congo, Série Scientifique, 89:7-117 (plus 41 photos), 1960.
BOUREAU, E., - Anatomie Végétale. Tome L II e III, Presses Universitaires de France, Boulevard Saint-Germain, 108, Paris, 753 pp. 1954, 56,57.
CABRALES,E.A.B., - Un arbol de cacao con frutos partenocarpicos en el valle del Cauca. Cacao en Colombia, 3: 93-105, 1964.
HALL, C.J.J. Van., - Cacao. Second Edition, with illustrations, MacMillan & Co., Limited, St. Martin's Street, London, 514pp. 1932.
NICHOLS, R., Xylem Occlusions in the Fruit of Cacao (Theobroma cacao) and their Relation to Cherelle Wilt, Annals of Botany, N.S., 25(100):463-475.1961.
Referenciado não informado ~ Studies of Fruit Development of Cacao (Theobroma cacao) in Relation to Cherelle Wilt, L Development of the pericarp. Annals of Botiny, N.S. 28 (112):619-635, 1964.
Referenciado não informado ~ Studies of Fruit Development of Cacao (Theobroma cacao) in Relation to Cherelle Wilt, II. Auxins and Development of the Seeds. Annals of Botany, N.S. 29(114); 181-196, 1965.
Referenciado não informado ~ Studies of Fruit Development of Cacao (Theobroma cacao) in Relation to Cherelle Wilt. III. Effects of Fruit-thinning. Annals of Botany, N.S. 29 (114):197-203, a, 1965.
SHIMOYA, C., Microsporogenese em cacaueiro "Catongo" (Theobroma cacao L. ), Experientiae, Viçosa 5(1): 1-16, 1965.
