| dc.creator | Tremblay, Raymond L. | |
| dc.creator | Pomales-Hernández, Grizel | |
| dc.creator | Méndez-Cintrón, María de Lourdes | |
| dc.date | 2014-05-07T19:05:42Z | |
| dc.date | 2014-05-07T19:05:42Z | |
| dc.date | 2006-04 | |
| dc.date.accessioned | 2017-03-17T16:54:05Z | |
| dc.date.available | 2017-03-17T16:54:05Z | |
| dc.identifier | 0008-6452 | |
| dc.identifier | http://hdl.handle.net/10586 /373 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/647493 | |
| dc.description | Plants have theoretically multiple alternatives for preventing self pollination and consequently the effect of inbreeding, such as sequential flowering, dichogamy and self–incompatibility to name a few. We investigated the reproductive biology of three sequentially flowering (acropetal) endemic orchids from Puerto Rico. Since sequential flowering is present in the studied species and very rarely (1.0%) is there more than one flower open simultaneously on an inflorescence, we hypothesized that the orchids should be
self-compatible and show no effect of protandry (dichogamy). We performed hand self—and crosspollinations and evaluated whether the species are self-compatible and whether the receptivity to pollination
success (fruit set) is influenced by the age of flowers (protandry). We define protandry as pertaining to a hermaphroditic organism that assumes a functional male condition prior to shifting to a functional female
state. We found that all three species are self-incompatible. Furthermore, flower age is important for predicting the likelihood of fruits set. Older flowers (6+ days) are significantly more likely to produce fruits
(functional protandry). The multiple mechanisms for preventing self-pollination (sequential flowering, dichogamy
and self-incompatibility) that are noted for these species suggest that the historical evolutionary
processes for preventing inbreeding may be complex. We hypothesized that because multiple mechanisms
are present for preventing self-pollination inbreeding depression is likely to be high. | |
| dc.description | College of Arts and Sciences University of Puerto Rico, Mayagüez | |
| dc.language | en_US | |
| dc.publisher | Caribbean Journal of Science, Vol. 42, No. 1, 75-80, 2006 | |
| dc.subject | Lepanthes | |
| dc.subject | Puerto Rico | |
| dc.subject | reproductive success | |
| dc.subject | dichogamy | |
| dc.subject | self-incompatible | |
| dc.title | Flower Phenology and Sexual Maturation: Partial Protandrous Behavior in Three Species of Orchids | |
| dc.type | Artículos de revistas | |
