Fenologia reprodutiva, sazonalidade e germinação de Kielmeyera regalis Saddi (Clusiaceae), espécie endêmica dos campos rupestres da Cadeia do Espinhaço, Brasil

Ranieri, Bernardo D.; Negreiros, Daniel; Pezzini, Flávia Fonseca; Fernandes, Geraldo Wilson

doi:10.1590/s0102-33062012000300012

Cited by 19 publications

(10 citation statements)

References 58 publications

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“…Both shape mating possibilities between synchronous individuals, thereby influencing the transmission of genetic diversity from generation to generation and affecting the degree of genetic diversity and structure in populations (Ritland 1989, Ison et al 2014. Patterns of floral phenology are considered to reflect evolutionary compromises in response to a set of selective forces, including the availability of water (David et al 2012) and gene dispersers (pollinators and seed dispersers, Ranieri et al 2012). The onset of flowering i.e.…”

Section: Introductionmentioning

confidence: 99%

Reproductive biology of Pentadesma butyracea (Clusiaceae), source of a valuable non timber forest product in Benin

Ewedje¹,

Hardy²,

Ley³

2015

Plecevo

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Section: Introductionmentioning

confidence: 99%

Reproductive biology of Pentadesma butyracea (Clusiaceae), source of a valuable non timber forest product in Benin

Ewedje¹,

Hardy²,

Ley³

2015

Plecevo

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“…St.-Hil. ), and Ranieri et al (2012) with K. regalis Saddi, showing a rapid and numerous germination in the beginning of the rainy season. This strategy of taking advantage of favorable environmental conditions is also the standard used by Callisthene major.…”

Section: Resultsmentioning

confidence: 96%

Effect of Different Temperatures on the Germination of Callisthene major (Vochysiaceae)

et al. 2020

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Knowledge of environmental conditions for seed germination and seedling formation of forest species is essential. The objective of this work is to evaluate the germination of Callisthene major seeds under laboratory conditions using six different temperatures (20, 25, 30, 35, 20-30 and 25-35 °C) and germitest paper (on and between paper). A completely randomized design was used with four replicates of 25 seeds per experimental unit. The variables evaluated were germination (%), germination speed index (GSI), average germination time (AGT) in days and normal seedlings. The results indicated that the species has a high germination index (above 94%) for all tested substrates and temperatures; however, the highest germination vigor (GSI and AGT) was obtained by alternating the temperature between 25-35 °C with the substrate on paper.

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“…During the flowering peak individual plants daily produce a few newly‐opened, disc‐shaped and predominantly hermaphroditic solitary flowers 7–11 cm in diameter, with no nectar production (Saddi ; Ranieri et al . ; Teixido et al . ; Fig.…”

Section: Methodsmentioning

confidence: 99%

“…To date, there are no studies exploring pollinator visitation, floral biology and breeding system of this species (but see Ranieri et al . for phenological and germination patterns). However, recent findings based on the high pollen limitation level (Teixido et al .…”

Section: Methodsmentioning

confidence: 99%

One for all and all for one: retention of colour‐unchanged old flowers increases pollinator attraction in a hermaphroditic plant

et al. 2018

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Long-lived flowers increase pollen transfer rates, but these entail high water and carbon maintenance costs. The retention of pollinated and reward-free old flowers enhances pollinator visitation to young receptive flowers by increasing floral display size. This mechanism is associated with acropetal inflorescences or changes in flower colour and openness, but the retention of unchanging solitary flowers remains overlooked. We examined pollination-dependent variation in floral longevity and determined stigmatic receptivity, pollen viability and pollen removal rates among flower ages in Kielmeyera regalis, a Neotropical savanna shrub. We also evaluated the effects of floral display size on pollinator visitation rates. Lastly, we determined whether old flowers are unvisited and exclusively increase pollinator attraction to young flowers through flower removal experiments. Regardless of pollination treatment, flowers lasted fully open with no detectable physical changes for 3 days. Over time, stigmas remained receptive but >95% of pollen was removed. Pollinator visitation significantly increased with floral display size and intermediate percentages (15-30%) of newly opened flowers. Accordingly, the retention of reward-free and unvisited old flowers increased young flower-pollinator interaction. Our results reveal the importance of a prolonged floral longevity in increasing pollinator attraction toward newly opened receptive flowers without changes in flower colour and form. We conclude that the retention of pollinated, reward-free and unvisited colour-unchanged old flowers in K. regalis is a strategy that counteracts the water use costs associated with the maintenance of large flowers with increased mate opportunities in a pollen-limited scenario.

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Fenologia reprodutiva, sazonalidade e germinação de Kielmeyera regalis Saddi (Clusiaceae), espécie endêmica dos campos rupestres da Cadeia do Espinhaço, Brasil

Cited by 19 publications

References 58 publications

Reproductive biology of Pentadesma butyracea (Clusiaceae), source of a valuable non timber forest product in Benin

Reproductive biology of Pentadesma butyracea (Clusiaceae), source of a valuable non timber forest product in Benin

Effect of Different Temperatures on the Germination of Callisthene major (Vochysiaceae)

One for all and all for one: retention of colour‐unchanged old flowers increases pollinator attraction in a hermaphroditic plant

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