Pollination and breeding system of Couepia uiti (Mart. and Zucc.) Benth (Chrysobalanaceae) in the Pantanal da Nhecolândia

Paulino-Neto, Hipólito Ferreira

doi:10.1590/s1519-69842007000400018

Cited by 6 publications

(8 citation statements)

References 8 publications

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“…In self-incompatible plants, self-pollination lowered the seed-setting rate 16 whereas cross-pollinated plants gave a higher fruit setting rate 35,36,38,39 . Manual selfpollination did not increase the seed-setting rate due to inbreeding depression 36,39,40 . Self-incompatibility in Crape myrtle (Lagerstroemia spp.…”

Section: Self-incompatibility Testmentioning

confidence: 88%

Pollen viability, germination, and seed setting of Nelumbo nucifera

Khatfan¹,

Zuo²,

Chen³

et al. 2014

ScienceAsia

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In tropical countries, low seed setting is a major problem when cultivating lotus (Nelumbo nucifera Gaertn.). This study determined seed setting in six wild lotus cultivars: Sai Rung (SR), Sam Roi Yot (SY), Klong Yong, Puttha Monthon (PM), Rachine (RC), and Nakhon Sawan (NW). In nature, the seed-setting rates range from 52-78%. From a stigma removal study, only a 53% seed-setting rate by self-pollination was recorded in the SR cultivar. This result was similar to the seed setting of self-pollinated PM, although high viability of PM pollen from day 2 full bloom flowers was observed. Self-incompatibility was studied in RC and NW cultivars. The indices of self-incompatibility of RC and NW were both 96% indicating that self-incompatibly affects low seed setting in these two cultivars. The results showed that the low seed-setting rate also came from seed abortion. A high value of self-incompatibility was observed in RC and NW cultivars, but not in the other cultivars studied.

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Section: Self-incompatibility Testmentioning

confidence: 88%

Pollen viability, germination, and seed setting of Nelumbo nucifera

Khatfan¹,

Zuo²,

Chen³

et al. 2014

ScienceAsia

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“…Manual cross-pollination resulted in 11% fruit set (xenogamy). In natural conditions, where flowers are mostly visited by honeybees, fruit set did not exceed 15% (Paulino-Neto 2007).…”

Section: Introductionmentioning

confidence: 90%

“…The flowers were unbagged at 12:00 am (period of stigmatic receptivity, see Paulino-Neto 2007), and single visits were recorded until 2:00 pm. We carried out this experiment for a maximum time of 2 h. Unvisited flowers or flowers that we were unable to evaluate bee visitation behavior were discarded.…”

Section: Pollination Efficiencymentioning

confidence: 99%

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High visitation rate of oil bees may increase pollination efficiency of Couepia uiti in Pantanal wetland

et al. 2018

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Pollen transfer to the stigma is the primary mechanism of sexual reproduction in plants. Among bee species that act as pollen vectors and pollinators, attributes such as floral visitation rate, synchrony with the receptive phase of the flower, compatibility between flower shape and foraging behavior, and morphological traits are often used to infer pollination efficiency. Herein, we evaluate visitation frequency and behavior of bee species on Couepia uiti (Chrysobalanaceae) flowers in the southern Pantanal, Brazil. Additionally, after experimental manipulation of flower visitation and by accompanying pollen tube growth in the pistil after one single visit to the flowers, we were able to pinpoint the roles of Centris spilopoda and Apis mellifera on the pollination of C. uiti. Centris spilopoda was the most important pollinator of C. uiti in the study area. In fact, we found that this oil bee might enhance plant reproductive success by almost 40% after a single visit. In addition to its high abundance, the efficiency of C. spilopoda as pollinator may be explained by its tight synchrony with pollen liberation and stigmatic receptivity of flowers of C. uiti.

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“…O sistema de polinização pode variar de acordo com o clima, altitude, região geográfica e tipo de vegetação (e.g., Silberbauer- Gottsberger & Gottsberger 1988). Além desses, outros fatores como diferenças entre borda e interior (Martins & Batalha 2006;2007;Yamamoto et al 2007) e a estratificação também podem influenciar significativamente a fenologia e disponibilidade dos recursos florais nos ecossistemas, que atuam diretamente na atração e manutenção dos polinizadores e consequentemente da flora associada (Bawa et al 1985;Kress & Beach 1994;Kinoshita et al 2006). Segundo Silberbauer-- Gottsberger & Gottsberger (1988), mais de 80% das plantas do cerrado produzem recursos florais que atraem abelhas e terminam sendo polinizadas primariamente ou secundariamente por estes insetos.…”

Section: Introductionunclassified

Distribuição vertical dos sistemas de polinização bióticos em áreas de cerrado sentido restrito no Triângulo Mineiro, MG, Brasil

2012

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RESUMO(Distribuição vertical dos sistemas de polinização bióticos em áreas de cerrado sentido restrito no Triângulo Mineiro, MG, Brasil). Alguns fatores podem influenciar a distribuição dos recursos florais e sistemas de polinização bióticos nos ecossistemas, como por exemplo, o clima, a altitude, a região geográfica, fragmentação de áreas naturais e as diferenças na composição florística na estratificação vertical. Este estudo teve por objetivo avaliar a distribuição dos sistemas de polinização bióticos na estratificação vertical em fragmentos de cerrado sentido restrito no Triângulo Mineiro. Não houve diferença significativa (χ 2 0,05,9=14,17; p = 0,12) na riqueza florística geral entre os fragmentos, nem quando comparada em separado para cada estrato (arbóreo, arbustivo, herbáceo e liana), estando o estrato arbustivo mais bem representado. Da mesma forma, não houve diferenças significativas entre fragmentos quanto aos sistemas de polinização (χ 2 0,05,21=13,80; p = 0,8778), sendo a polinização por abelhas mais comum, correspondendo ao menos 85% das espécies de plantas em cada fragmento. Em termos relativos, as plantas polinizadas por abelhas foram dominantes em todos os estratos, chegando a 100% das lianas e herbáceas em alguns fragmentos. Neste estudo, com base na composição florística e distribuição dos sistemas de polinização na estratificação vertical, podemos caracterizar um mosaico vertical no cerrado sentido restrito, que tem implicações na sustentabilidade das comunidades no cerrado, assim como os mosaicos horizontais de fitofisionomias. Palavras-chave: Cerrado, florística, formação vegetal, polinização ABSTRACT(Vertical distribution of biotic pollination systems in cerrado sensu stricto in the Triângulo Mineiro, MG, Brazil). Several factors can influence the distribution of floral resources and pollination systems in ecosystems, such as climate, altitude, geographic region, fragmentation of natural areas and differences in floristic composition along the vertical stratification. This study aimed to evaluate the distribution of the vertical stratification of biotic pollination systems in cerrado (sensu stricto) fragments in the Triângulo Mineiro. There was no significant difference (χ 2 0.05,9=14.17; P = 0.12) in total plant species richness among fragments, nor in the species richness of each layer (trees, shrubs, herbs and lianas) and the shrub layer was the best represented. Likewise, there was no significant difference between fragments for the systems of pollination (χ 2 0.05,21=13.80; P = 0.8778). Pollination by bees was the most common, corresponding to 85% of species in each fragment. In relative terms, plants pollinated by bees were dominant in all strata, reaching 100% for the lianas in fragments 1, 3 and 4 and for the herbs in fragments 1 and 4. In this study, based on floristic composition and distribution of biotic pollination systems in the vertical stratification, we could define a vertical mosaic in the cerrado studied, which has implications for the sustainability of communities in th...

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Pollination and breeding system of Couepia uiti (Mart. and Zucc.) Benth (Chrysobalanaceae) in the Pantanal da Nhecolândia

Cited by 6 publications

References 8 publications

Pollen viability, germination, and seed setting of Nelumbo nucifera

Pollen viability, germination, and seed setting of Nelumbo nucifera

High visitation rate of oil bees may increase pollination efficiency of Couepia uiti in Pantanal wetland

Distribuição vertical dos sistemas de polinização bióticos em áreas de cerrado sentido restrito no Triângulo Mineiro, MG, Brasil

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