Effects of Habitat, Plant Size, and Floral Display on Male and Female Reproductive Success of the Neotropical Orchid Brassavola nodosa

Biotropica ◽  
1996 ◽  
Vol 28 (1) ◽  
pp. 30 ◽  
Author(s):  
Courtney J. Murren ◽  
Aaron M. Ellison
Keyword(s):  
Reproductive Success ◽  
Plant Size ◽  
Floral Display ◽  
Female Reproductive Success ◽  
Male And Female

scholarly journals Male and female reproductive success in natural and anthropogenic populations of Malaxis monophyllos (L.) Sw. (Orchidaceae)

2015 ◽  
Vol 39 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Edyta Jermakowicz ◽  
Beata Ostrowiecka ◽  
Izabela Tałałaj ◽  
Artur Pliszko ◽  
Agata Kostro-Ambroziak
Keyword(s):  
Reproductive Success ◽  
Fruit Set ◽  
Natural Populations ◽  
Floral Display ◽  
Natural Habitats ◽  
Female Reproductive Success ◽  
Male And Female ◽  
Demographic Processes ◽  
Preliminary Study ◽  
Effective Pollinators

Abstract In the presented study, male and female reproductive success was analyzed in relation to the population size, floral display and pollinators’ availability in natural and anthropogenic populations of the orchid Malaxis monophyllos (L.) Sw. Our results indicated significant differences between all investigated populations in parameters of floral display, including heights and number of flowers per inflorescence, as well the number of flowering individuals and their spatial structure. Additionally, populations differed both in male (pollinia removal) and female (fruit set) reproductive success, but only the fruit set clearly differentiated anthropogenic and natural populations. Despite the average flower number per plant being significantly higher in two of the anthropogenic populations, it was not related to the fruits set, which was significantly lower there. Moreover, our preliminary study concerning the potential pollinators of M. monophyllos showed a higher contribution of flies in natural habitats than in anthropogenic ones. Thus, we can suspect that the main factors influencing the level of female reproductive success in M. monophyllos populations are abundance of effective pollinators, as well as flower visitors, which may have resulted in a different level of pollen discounting in populations. Therefore, further studies concerning breeding system and pollination as important forces that shape demographic processes in M. monophyllos populations are necessary. Our results also indicate that suitable conservation methods in M. monophyllos should always include the preservation of potential pollinators, especially in these new, secondary habitats.

Floral Display in Phyla Incisa: Consequences for Male and Female Reproductive Success

Evolution ◽  
1988 ◽  
Vol 42 (3) ◽  
pp. 505 ◽  
Author(s):  
Mitchell B. Cruzan ◽  
Paul R. Neal ◽  
Mary F. Willson
Keyword(s):  
Reproductive Success ◽  
Floral Display ◽  
Female Reproductive Success ◽  
Male And Female

The effects of plant size and light availability on male and female reproductive success and functional gender in a hermaphrodite tree species, Magnolia stellata

Botany ◽  
2011 ◽  
Vol 89 (9) ◽  
pp. 593-604 ◽  
Author(s):  
Suzuki Setsuko ◽  
Nobuhiro Tomaru
Keyword(s):  
Reproductive Success ◽  
Tree Species ◽  
Local Population ◽  
Light Availability ◽  
Plant Size ◽  
Photon Flux ◽  
Photon Flux Density ◽  
Female Reproductive Success ◽  
Chloroplast Microsatellite ◽  
Male And Female

Plant size and light availability may affect male and (or) female reproductive success and their relative contribution (functional gender). To test this hypothesis, we identified parents of 184 seedlings in a local population within a metapopulation of a hermaphroditic, insect-pollinated tree species, Magnolia stellata (Siebold & Zucc.) Maxim., using 14 nuclear and 3 chloroplast microsatellite markers. Parent pairs of all the seedlings were determined, and both seed and pollen parents could be distinguished for 49.5% of the seedlings. We also measured the parents’ plant size (diameter at breast height of the thickest ramet within each genet; DBHt) and the relative photosynthetic photon flux density (rPPFD) they received. The proportion of seedlings that originated from selfing was 20.7%. The number of seedlings parental trees produced as seed parents (S) was positively affected by DBHt and rPPFD. DBHt (but not rPPFD) also positively affected the number of seedlings sired as pollen parents (P). The femaleness of the parental trees (S/(S + P)) was positively affected by DBHt, probably because DBHt had a stronger effect on the trees’ reproductive success as seed parents than on their success as pollen parents. These results suggest that plant size affects not only reproductive success (male and female), but also functional gender.

scholarly journals FLORAL DISPLAY IN PHYLA INCISA : CONSEQUENCES FOR MALE AND FEMALE REPRODUCTIVE SUCCESS

Evolution ◽  
1988 ◽  
Vol 42 (3) ◽  
pp. 505-515 ◽  
Author(s):  
Mitchell B. Cruzan ◽  
Paul R. Neal ◽  
Mary F. Willson
Keyword(s):  
Reproductive Success ◽  
Floral Display ◽  
Female Reproductive Success ◽  
Male And Female

Floral display influences male and female reproductive success of the deceptive orchid Phaius delavayi

2011 ◽  
Vol 296 (1-2) ◽  
pp. 21-27 ◽  
Author(s):  
P. Li ◽  
B. Q. Huang ◽  
R. W. Pemberton ◽  
Y. B. Luo ◽  
J. Cheng
Keyword(s):  
Reproductive Success ◽  
Floral Display ◽  
Female Reproductive Success ◽  
Male And Female
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