Termos da biologia da polinização aplicados à fruticultura

Pereira, Douglas de Almeida; Brasileiro, Bruno Portela; Amaral, Cláudio Lúcio Fernandes

doi:10.5007/2175-7925.2009v22n1p141

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Studying the reproduction of plant species with small, isolated populations in stressful habitats such as the campo rupestre (Zappi et al 2017) is particularly important to support their conservation (Martínez‐Peralta and Mandujano 2011). An insight to the cactus reproductive mechanisms is the first step towards understanding genetic structure and demographic dynamics (Pereira et al 2009) of plant species. Only 10% of the 270 Brazilian cacti have been studied from the floral and reproductive biology (Schlindwein and Wittmann 1995, Aona et al 2006, Colaço et al 2006, Lenzi and Orth 2011, Rego et al 2012, Gomes et al 2014, Martins et al 2016, Paulino‐Neto et al 2016, Martins and Freitas 2018, Rocha et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Pollen‐feeding bees in Uebelmannia pectinifera subsp. pectinifera – reproductive biology of an endemic cactus from the campo rupestre of eastern Brazil

Sousa

Verola

Ribeiro‐Silva

et al. 2021

Nordic Journal of Botany

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Uebelmannia pectinifera Buining subsp. pectinifera (Cactaceae) is an endangered species endemic to quartzitic rocks in campo rupestre vegetation of Minas Gerais state, Brazil. Understanding its reproductive biology and pollinators is needed for effective conservation planning for the species. The study took place in the Parque Nacional Sempre Vivas where 35 individuals were monitored. Analyses of floral morphology, pollen/ovule ratio, stigma receptivity and presence of osmophores were carried out, while observations of floral visitors were made and, according to their behavior, the potential pollinators were ascertained. The reproductive system of the plant was evaluated by means of manual self‐ and cross‐pollination and growth and morphology of pollen tubes were observed. The anthesis occurs by 06 a.m. and ends around 03 p.m., the flowers re‐opening for two days and finishing on the third day, being protandrous and melittophilous, offering pollen only. Two species of solitary bees (Ceratina sp. and Chilicola huberi) were observed pollinating the flowers, the female bees collecting pollen. The reproductive system is allogamic with endogamic self‐incompatibility and is served by specific pollinators. U. pectinifera subsp. pectinifera occurs in small populations, its reproduction relies on the presence of pollen‐gathering bees that also depend on the associated flora for nectar provision, highlighting the importance of maintaining its surrounding habitat in good condition.

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Section: Introductionmentioning

confidence: 99%

Pollen‐feeding bees in Uebelmannia pectinifera subsp. pectinifera – reproductive biology of an endemic cactus from the campo rupestre of eastern Brazil

Sousa

Verola

Ribeiro‐Silva

et al. 2021

Nordic Journal of Botany

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“…Studies related to reproductive biology, involving knowledge of its phenology are efficient tools to contribute to the improvement of management strategies in cultivation and conservation (Perleberg, 2017). Phenology is the study of the flowering and fruiting patterns of a species, that is, the study of the biological cycle of plants that includes the monitoring of phases such as flowering, fruiting, and leaf change (Pereira et al, 2009). Such monitoring is necessary if the objective is their commercial exploitation, allowing the producer to estimate the time of harvest, care for fungal diseases and serve as a parameter for possible management practices.…”

Section: Introductionmentioning

confidence: 99%

Phenological follow-up of strawberry-guava in the Southeast Region of Paraná

Neto¹,

Radaelli

Guollo³

et al. 2020

RSD

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Brazil has a considerable variety of species edible fruits, such as strawberry-guava (Psidium cattleianum), which has significant environmental plasticity and great potential for use. Studies related to reproductive biology, involving the knowledge of phenology are efficient tools to contribute to the improvement of species management and conservation strategies. Thus, this study aimed to monitor and record the phenological development of yellow and red Strawberry-guava, contrasting the differences between both. The study was developed in Dois Vizinhos, with red and yellow strawberry-guava, cultivar Ya-Cy, with branches marked at random, proceeding with photographic record and annotations of the peculiarities. The data were presented through images and a detailed description of each phase. The vegetative growth of the red strawberry-guava occurs between July and November, flowering between October and November with fruit ripening from late December to March. The vegetative growth of the yellow strawberry-guava occurs between July and October and between January and April, flowering from September to November and, January to March with fruit maturation between December and February and, from April to September. The red strawberry-guava produced only once a year, while the yellow strawberry-guava tree shows three outbreaks of production in the same period.

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“…Destaca-se o estudo da biologia floral que consiste na investigação das manifestações que ocorrem durante a vida da flor, inclusive a fertilização, mesclando-se com a ecologia da polinização, englobando estudos de interação entre flores e seus visitantes [16]. A exemplo de estudos sobre a viabilidade do grão de pólen e da receptividade do estigma como fenômenos importantes no sucesso reprodutivo da espécie vegetal, uma vez que quanto maior for o número de grãos de pólen viáveis depositado sobre o estigma, maior será o número e a qualidade de frutos e sementes produzidos pela planta [17].…”

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Fenologia e biologia floral de espécies de Byrsonima Rich. ex Kunth em área de caatinga na Bahia, Brasil

Nascimento Júnior,

Gama,

Lima

et al. 2023

Sci. Plena

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Estudos fenológicos e de biologia floral são importantes para o entendimento da dinâmica dos eventos biológicos que ocorrem entre as espécies vegetais ao longo do tempo. O presente estudo foi realizado visando identificar padrões fenológicos, florais e eficiência de polinizadores de espécies de Byrsonima Rich. ex Kunth em área remanescente de vegetação de caatinga na Bahia, Brasil. Vinte espécimes de três espécies de Byrsonima spp. foram marcados e acompanhados diariamente durante o período de floração, entre novembro de 2017 a abril de 2018. As populações das espécies estudadas apresentaram padrão de floração anual e duração intermediária com 40% das flores abertas por inflorescência/dia expressando a estratégia cornucópia. A sincronia foi interespecífica com distintos picos de floração com maior sincronia entre B. gardneriana e B. verbascifolia. Das variáveis climáticas, a umidade e a temperatura mostraram correlação forte com a atividade de floração. Na coleta de grãos de pólen, verificou-se uma redução significativa no quantitativo de grãos forrageado entre a primeira e a segunda visita. A biologia floral foi similar entre as espécies, além de produzirem quantidade satisfatória de pólen e alta viabilidade polínica, com destaque para B. verbascifolia. As espécies ofertam óleo e grãos de pólen como recompensa floral. As espécies de Byrsonima spp. estudadas nessa região de caatinga são potencialmente férteis e capacitadas a serem empregadas em programas de reflorestamento e melhoramento genético.

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Termos da biologia da polinização aplicados à fruticultura

Cited by 3 publications

References 6 publications

Pollen‐feeding bees in Uebelmannia pectinifera subsp. pectinifera – reproductive biology of an endemic cactus from the campo rupestre of eastern Brazil

Pollen‐feeding bees in Uebelmannia pectinifera subsp. pectinifera – reproductive biology of an endemic cactus from the campo rupestre of eastern Brazil

Phenological follow-up of strawberry-guava in the Southeast Region of Paraná

Fenologia e biologia floral de espécies de Byrsonima Rich. ex Kunth em área de caatinga na Bahia, Brasil

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