Pollen-pistil interactions inHermodactylus tuberosusMill. (Iridaceae)

Autor:	Federica Brandizzi, M. Grilli Caiola
Rok vydání:	1997
Předmět:	Gynoecium Pollination food and beverages Plant Science Biology medicine.disease_cause Iridaceae Germination Pollen Ornamental plant Botany otorhinolaryngologic diseases medicine Pollen tube Ovule Ecology Evolution Behavior and Systematics
Zdroj:	Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology. 131:197-205
ISSN:	1724-5575 1126-3504
DOI:	10.1080/11263504.1997.10654182
Popis:	Hermodactylus tuberosus Mill. (Iridaceae) is a species with a very short style and a tricarpellar unilocular ovary. For ornamental purposes it is usually reproduced by means of tubers, although both vegetative and seed reproduction occur in nature. However, its capsules do not contain many seeds in comparison to the high number of ovules inside the ovary. To understand this conflicting process a study on H. tuberosus pollen-pistil interaction was carried out. Pollen viability was evaluated by different techniques. Germination rate was tested in vitro and in vivo after stigma, intrastylar and intraovarian pollinations. A high percentage of the pollen grains were found to be viable resulting in a high percentage of in vitro germination and a low rate of germination on the stigma. Indeed, many pollen tubes developed after intrastylar and intraovarian pollinations. Several anomalies characterized pollen germination and pollen tube growth in vitro and in vivo. Observations from field trials indicated ...
Databáze:	OpenAIRE
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