Components of fecundity and abortion in a tropical tree, Dahlstedtia pentaphylla (Leguminosae)

Teixeira, Simone de Pádua; Pereira, Rodrigo Augusto Santinelo; Ranga, Neusa Taroda

doi:10.1590/s1516-89132006000700007

Cited by 16 publications

(20 citation statements)

References 31 publications

(38 reference statements)

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“…Seed abortion rates of 20-60% have been described for other plant species (García et al 2000;Allphin et al 2002;López-Almansa et al 2004;Teixeira et al 2006), corroborating data showing that seed abortion is especially common among self-incompatible trees and perennial trees (Sorensen 1982;Wiens 1984).…”

Section: Seed Abortionsupporting

confidence: 78%

Pre-dispersal seed predation and abortion in species of Callisthene and Qualea (Vochysiaceae) in a Neotropical savanna

et al. 2014

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The ability of plants to generate fertile offspring is influenced by morpho-physiological and ecological factors. Hence, reproductive success is directly linked to factors affecting quantity and quality of their progeny. In the Cerrado (savanna) of Brazil, the Vochysiaceae is a widely distributed and ecologically important family. Factors affecting pre-dispersal seed predation and abortion were studied for populations of Callisthene fasciculata, C. major, Qualea multiflora and Q. parviflora. To characterize differences between genera, as well as among species, study areas, and individuals, we quantified pre-dispersal seed predation and abortion. Differences of seed abortion among the species were related to intrinsic reproductive features and not to area or other factors. In contrast, seed predation varied not only among species but also among areas and among individuals. Only C. fasciculata showed no seed predation. In Qualea species, insect predators were found inside the seeds; whereas predators of Callisthene species were outside seeds. In both genera, seed abortion correlated negatively with area size, as did pre-dispersal seed predation, which suggest seed abortion may be a counter-measure to avoid predation. Although seed abortion and predation reduced the progenies of the studied species, seed production did not differ from other Cerrado species.

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Section: Seed Abortionsupporting

confidence: 78%

Pre-dispersal seed predation and abortion in species of Callisthene and Qualea (Vochysiaceae) in a Neotropical savanna

et al. 2014

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“…But high densities of honey bees could be harmful to crop production since many flowers are pollinated leading to competition of ovules for the resources required for fruit or seed development (Lloyd, 1980). This competition could result in abortion of ovules, seeds and fruits and then reduce the production (Teixeira et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Western honey bee management for crop pollination

Toni¹,

Djossa²,

Yédomonhan³

et al. 2018

Afr. Crop Sci. J.

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“…This aspect of regulation probably depends upon the carbon balance of the tree, and operates through pollinated flowers becoming such strong carbon sinks that they suppress ovules that are pollinated later (Bangerth, ). Competition of this kind has been reported for many plants, including tropical trees, though more commonly amongst the ovules within a fruit rather than amongst flowers within an inflorescence (Mohan Raju, Uma Shaanker, & Ganeshaiah, ; Teixeira, Pereira, & Ranga, ).…”

Section: Discussionmentioning

confidence: 99%

Tracing coco de mer's reproductive history: Pollen and nutrient limitations reduce fecundity

Morgan

Kaiser‐Bunbury

Edwards³

et al. 2017

Ecology and Evolution

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Habitat degradation can reduce or even prevent the reproduction of previously abundant plant species. To develop appropriate management strategies, we need to understand the reasons for reduced recruitment in degraded ecosystems. The dioecious coco de mer palm (Lodoicea maldivica) produces by far the largest seeds of any plant. It is a keystone species in an ancient palm forest that occurs only on two small islands in the Seychelles, yet contemporary rates of seed production are low, especially in fragmented populations. We developed a method to infer the recent reproductive history of female trees from morphological evidence present on their inflorescences. We then applied this method to investigate the effects of habitat disturbance and soil nutrient conditions on flower and fruit production. The 57 female trees in our sample showed a 19.5‐fold variation in flower production among individuals over a seven‐year period. Only 77.2% of trees bore developing fruits (or had recently shed fruits), with the number per tree ranging from zero to 43. Flower production was positively correlated with concentrations of available soil nitrogen and potassium and did not differ significantly between closed and degraded habitat. Fruiting success was positively correlated with pollen availability, as measured by numbers and distance of neighboring male trees. Fruit set was lower in degraded habitat than in closed forest, while the proportion of abnormal fruits that failed to develop was higher in degraded habitat. Seed size recorded for a large sample of seeds collected by forest wardens varied widely, with fresh weights ranging from 1 to 18 kg. Synthesis: Shortages of both nutrients and pollen appear to limit seed production of Lodoicea in its natural habitat, with these factors affecting different stages of the reproductive process. Flower production varies widely amongst trees, while seed production is especially low in degraded habitat. The size of seeds is also very variable. We discuss the implications of these findings for managing this ecologically and economically important species.

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Components of fecundity and abortion in a tropical tree, Dahlstedtia pentaphylla (Leguminosae)

Cited by 16 publications

References 31 publications

Pre-dispersal seed predation and abortion in species of Callisthene and Qualea (Vochysiaceae) in a Neotropical savanna

Pre-dispersal seed predation and abortion in species of Callisthene and Qualea (Vochysiaceae) in a Neotropical savanna

Western honey bee management for crop pollination

Tracing coco de mer's reproductive history: Pollen and nutrient limitations reduce fecundity

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