Reproductive biology in the primitive relic Angiosperm Drimys brasiliensis (Winteraceae)


Autoria(s): Gottsberger, Gerhard; Silberbauer-Gottsberger, Ilse; Ehrendorfer, Friedrich
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

26/05/2014

26/05/2014

01/03/1980

Resumo

From field observations on Drimys brasiliensis, principally in the Botucatu region of São Paulo State, Brazil, new data on the reproductive biology, the rhythm of growth, and the development of lateral cymose inflorescences, flowers and fruits are presented. Pollination accelerates the rate of flower-development for about 4-6 days. Pollination experiments show that D. brasiliensis is not self-sterile; because of mechanical devices the sticky pollen grains do not normally come into contact with the stigmata unless an animal pollen vector is involved. The pollinators are diurnal Coleoptera, Diptera and Thysanoptera which eat from the pollen, lick from the stigmatic exudates and (in case of the flies) probably also from the staminal glands. Fruit- and seedeaters are birds which seem to be the main dispersal agents. Establishment of new individuals normally is through seedlings, but also by vegetative propagation through plagiotropous branches which may root and separate from the mother plant. The morphological, developmental and reproductive aspects in D. brasiliensis are discussed in a wider context, compared with data from other Magnoliidae, and related to aspects of early Angiosperm evolution. © 1980 Springer-Verlag.

Formato

11-39

Identificador

http://dx.doi.org/10.1007/BF00983005

Plant Systematics and Evolution, v. 135, n. 1-2, p. 11-39, 1980.

0378-2697

1615-6110

http://hdl.handle.net/11449/63480

10.1007/BF00983005

2-s2.0-0002777251

Idioma(s)

eng

Relação

Plant Systematics and Evolution

Direitos

closedAccess

Palavras-Chave #Angiosperms #Development of inflorescences #Drimys brasiliensis #early Angiosperm evolution #flowers and fruits #pollination #reproductive biology #seed dispersal #vegetative propagation #Winteraceae
Tipo

info:eu-repo/semantics/article