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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria Tropical; Embrapa Meio-Norte. |
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Data corrente: |
25/02/1999 |
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Data da última atualização: |
24/05/2018 |
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Autoria: |
FREITAS, B. M. |
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Título: |
The pollination efficiency of foraging bees on apple (Malus domestica Borkh) and cashew (Anacardium occidentale L.). |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Wales: University of Wales College of Cardiff, 1995. |
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Páginas: |
197p. |
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Idioma: |
Inglês |
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Notas: |
Ph.D. Thesis. |
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Conteúdo: |
The increasing need for crop pollination has greatly promoted the use of insects as pollinators in recent years. However, there is no comprehensive pollination efficiency index to estimate pollinator effectiveness. The aims of this thesis were to study factors that could contribute to the pollination efficiency of floral visitors and to develop a general pollination index where the fitness of both male and female functions of a flower could be evaluated and the pollination efficiency of floral visitors could be determined. To achieve these goals, pollen- and nectar-collecting honeybees (Apis mellifera L.) foraging on apples (Malus domestica Borkh), and honeybees and the solitary bee, Centris (Hemisiella) tarsata Smith, foraging on cashew (Anacardium occidentale L.), were investigated between 1992 and 1994 in UK and Brazil, respectively. A sereis of experiments covered the efficiency of these bees in acquiring fresh, viable pollen on their bodies; in accumulating and distributing pollen grains over their bodies; in transferring compatible pollen to stigmas; and in setting seeds and fruits. To help interpretation of the data, the floral biology of apples and cashew were extensively investigated. As a result, interpretations of the plant species' pollination strategies and how interactions with the foraging strategy of the bees affect the pollinator's efficiency, are given and discussed. Aldo, a direct and comprehendive measure of pollinator effectiveness (GPEi), resulting from the arithmetic mean of the efficiency indices developed in this study for pollen removal from flowers, pollen acquirement by the pollinator's body, pollen transfer to stigmas and Spears' (1983) pollination efficiency index, is proposed. According to their GPEi, pollen-collecting honeybees were better polinators of apples than nectar-collecting honeybees and C. tarsata was a better pollinator of cashew than noneybees. The usefulness and limitations of GPEi are discussed. MenosThe increasing need for crop pollination has greatly promoted the use of insects as pollinators in recent years. However, there is no comprehensive pollination efficiency index to estimate pollinator effectiveness. The aims of this thesis were to study factors that could contribute to the pollination efficiency of floral visitors and to develop a general pollination index where the fitness of both male and female functions of a flower could be evaluated and the pollination efficiency of floral visitors could be determined. To achieve these goals, pollen- and nectar-collecting honeybees (Apis mellifera L.) foraging on apples (Malus domestica Borkh), and honeybees and the solitary bee, Centris (Hemisiella) tarsata Smith, foraging on cashew (Anacardium occidentale L.), were investigated between 1992 and 1994 in UK and Brazil, respectively. A sereis of experiments covered the efficiency of these bees in acquiring fresh, viable pollen on their bodies; in accumulating and distributing pollen grains over their bodies; in transferring compatible pollen to stigmas; and in setting seeds and fruits. To help interpretation of the data, the floral biology of apples and cashew were extensively investigated. As a result, interpretations of the plant species' pollination strategies and how interactions with the foraging strategy of the bees affect the pollinator's efficiency, are given and discussed. Aldo, a direct and comprehendive measure of pollinator effectiveness (GPEi), resulting from... Mostrar Tudo |
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Palavras-Chave: |
Cajueiro; Macieira; Polizacao. |
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Thesagro: |
Abelha; Anacardium Occidentale; Caju; Maçã; Malus Domestica; Polinização. |
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Categoria do assunto: |
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F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02641nam a2200241 a 4500
001 1051671
005 2018-05-24
008 1995 bl uuuu m 00u1 u #d
100 1 $aFREITAS, B. M.
245 $aThe pollination efficiency of foraging bees on apple (Malus domestica Borkh) and cashew (Anacardium occidentale L.).
260 $aWales: University of Wales College of Cardiff$c1995
300 $a197p.
500 $aPh.D. Thesis.
520 $aThe increasing need for crop pollination has greatly promoted the use of insects as pollinators in recent years. However, there is no comprehensive pollination efficiency index to estimate pollinator effectiveness. The aims of this thesis were to study factors that could contribute to the pollination efficiency of floral visitors and to develop a general pollination index where the fitness of both male and female functions of a flower could be evaluated and the pollination efficiency of floral visitors could be determined. To achieve these goals, pollen- and nectar-collecting honeybees (Apis mellifera L.) foraging on apples (Malus domestica Borkh), and honeybees and the solitary bee, Centris (Hemisiella) tarsata Smith, foraging on cashew (Anacardium occidentale L.), were investigated between 1992 and 1994 in UK and Brazil, respectively. A sereis of experiments covered the efficiency of these bees in acquiring fresh, viable pollen on their bodies; in accumulating and distributing pollen grains over their bodies; in transferring compatible pollen to stigmas; and in setting seeds and fruits. To help interpretation of the data, the floral biology of apples and cashew were extensively investigated. As a result, interpretations of the plant species' pollination strategies and how interactions with the foraging strategy of the bees affect the pollinator's efficiency, are given and discussed. Aldo, a direct and comprehendive measure of pollinator effectiveness (GPEi), resulting from the arithmetic mean of the efficiency indices developed in this study for pollen removal from flowers, pollen acquirement by the pollinator's body, pollen transfer to stigmas and Spears' (1983) pollination efficiency index, is proposed. According to their GPEi, pollen-collecting honeybees were better polinators of apples than nectar-collecting honeybees and C. tarsata was a better pollinator of cashew than noneybees. The usefulness and limitations of GPEi are discussed.
650 $aAbelha
650 $aAnacardium Occidentale
650 $aCaju
650 $aMaçã
650 $aMalus Domestica
650 $aPolinização
653 $aCajueiro
653 $aMacieira
653 $aPolizacao
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Embrapa Meio-Norte (CPAMN) |
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