The genetic consequences of rarity in the western prairie fringed orchid (Sharma, J.
Contribution of inbreeding to extinction risk in threatened species. Biol. Conservation genetics of an endangered orchid in eastern Canada. Pollinator limitation and inbreeding depression in orchid species with and without nectar rewards. 2010. Rev. However, outbreeding depression does not seem likely given the evidence we have from genetic studies. Nat. 1986. Accepted Synonyms: Blephariglottis praeclara, Fimbriella praeclara, Habenaria leucophaea var. The scarcity of orchids at the South site necessitated a change in sourcing outcross pollen, which in 2012 came from a smaller roadside population of Statistical analyses were performed using the program R, version 2.13.2 (The ovaries of flowers that did not receive pollen failed to increase in length or diameter over the course of the growing season (Seed production differed across the three pollination treatments.
This particular species of Platanthera is diploid and self-compatible with a flower morphology typical of plants adapted to hawk moth pollination (Sheviak and Bowles, 1986). Rev. 2013. Mycobionts, germination and conservation genetics of federally threatened Sharma J, Zettler LW, Van Sambeek JW.
1990. Biol. The inflorescence has 10-24 creamy white colored flowers with petals that form a hood over the column. 2009. While drinking nectar, pollinia are placed on the compound eyes of the moth then transferred to a subsequent flower it visits.All images and text copyright Inbreeding depression and its evolutionary consequences. Math. However, low production of viable seeds represents an additional restriction on population growth through the limits it creates for adding new and genetically varied recruits. Minimum viable populations: processes of species extinction. Syst. Johnson SD, Neal PR, Harder LD. Processes of isolation and introgressive interplay between Paul J, Budd C, Freeland JR.
2012. The moth probes the nectar spur with its proboscis. The flowers are fragrant at night and are pollinated by large sphinx moths. Barrett, S.C.H., and Kohn, J.R. 1991.
Platanthera praeclara was originally described by Sheviak and Bowles (1986) as a hawkmoth-pollinated plant with an inflorescence that produces between one and 24 hermaphroditic and self-compatible flowers .
The prairie fringed orchids: a pollinator-isolated pair. Pleasants, J.M., and Klier, K. 1995. Population genetic consequences of small population size: Implications for plant conservation. Pollen fates and the limits on male reproductive success in an orchid population.
The genetics of inbreeding depression. It produces 2-5 basal and lower stem leaves, which are present at the time of flowering. Success rate of a biological invasion in terms of the spatial distribution of the founding population. Funding was provided by a grant from the San Diego County Orchid Society. The western prairie fringed orchid (Many orchid species rely on pollinators for sexual reproduction (Only rarely have investigators working on public lands been allowed to remove We collected data on field-grown plants in natural populations located at two sites in Ransom County, North Dakota, over the course of two summers (2011 and 2012). J. Linn. Seed mass is commonly used as a correlate of seed viability (e.g., Results from population genetic studies of both the western (Outbreeding depression is a concern in a species with the potential for long distance pollen dispersal by hawkmoths. 1994. 1983. Because hermaphroditic flowers mature pollinia and stigma simultaneously and multiple flowers of the inflorescence are open and receptive at the same time, so there is opportunity for self …
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Center for Plant Conservation. Experimental plants were in typical Several days later, when all three flowers on experimental plants had opened (they were covered with tule bags after labelling), we collected mature pollinaria from randomly selected non-experimental plants from each of the two populations. Bernhardt P, Edens-Meier R. 1986. Brook BW, Tonkyn DW, O’Grady JJ, Frankham R. The applicatin of minimum viable population theory to plants. 1993. 2015. Ecol. Capsule diameter was positively correlated with seed mass for both self and cross-pollinated flowers (The results of the experiment led us to conclude that outcrossing has a major impact on the quality of What is a viable seed? Genetic variation within and among populations of the eastern and western praire fringed orchids, R Development Core Team. 2003 Sheviak C, Bowles M. Ecol. Prairie Nat. Syst. CPC National collection plant profile. Self-pollinations were accomplished by removing a pollinarium from the same flower and applying its pollen to the stigma of the same flower. Here we present the results of the development of microsatellite markers for P. praeclara in the hopes of providing a tool for further study of this species and genus.
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