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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
14/05/1992 |
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Data da última atualização: |
17/10/2024 |
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Autoria: |
PASSOS, O. S.; CUNHA SOBRINHO, A. P. D.; SOARES FILHO, W. dos S. |
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Afiliação: |
ORLANDO SAMPAIO PASSOS, CNPMF; ALMIR PINTO DA CUNHA SOBRINHO, CNPMF; WALTER DOS SANTOS SOARES FILHO, CNPMF. |
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Título: |
A Comparison among Citrus aurantium, L., Citrus paradisi, Macf. and Poncirus trifoliata (L.) Raf. as pollen grain sources to Obtain nucellar lines in citrus. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
In: INTERNATIONAL CITRUS CONGRESS, 6., 1988, Philadelphia. Proceedings of the Sixth International, p.257-264, 1988. |
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ISBN: |
3-8236-1136-4 |
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Idioma: |
Inglês |
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Conteúdo: |
Citrus improvement through the attainment of nucellar lines has been extensively used and many comprehensive works have been published showing the practical advantages of this method. Since under tropical condition, the trifoliate orange has a poor growth behaviour and since the possibility of using other species such as sour orange and grapefruit as marker genes exist, crosses with 'Pera', 'Natal', 'Barao', and 'Valencia' sweet oranges (C. sinensis (L.) Osbeck) were made and true nucellar plants were obtained and released. In 1975, an experiment was carried out in order to determine the effectiveness of these species on 'Valencia', 'Pera', and 'Hamlin' sweet oranges and 'Ponkan' tangerine, (C. reticulata Blanco). Based on data regarding pollen germination, fruit set, number of seeds per fruit, poliembryony, seed germination and an estimate on the proportion of nucellar and zygotic seedlings, it seems that 'Duncar' grapefruit (C. paradisi Macf.) and sour orange can function as successfully as trifoliate as far as the attainment of nucellar lines is concerned. However, a survey made on the budded trees 7 years after planting showed that no zygotic trees existed. This leads to the conclusion that the use of crosses with any marker gene species could be dispensable. |
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Palavras-Chave: |
grapefruit; Marker gene; sour orange; wing-petiole. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02010nam a2200193 a 4500
001 1646177
005 2024-10-17
008 1988 bl uuuu u00u1 u #d
020 $a3-8236-1136-4
100 1 $aPASSOS, O. S.
245 $aA Comparison among Citrus aurantium, L., Citrus paradisi, Macf. and Poncirus trifoliata (L.) Raf. as pollen grain sources to Obtain nucellar lines in citrus.$h[electronic resource]
260 $aIn: INTERNATIONAL CITRUS CONGRESS, 6., 1988, Philadelphia. Proceedings of the Sixth International, p.257-264, 1988.$c1988
520 $aCitrus improvement through the attainment of nucellar lines has been extensively used and many comprehensive works have been published showing the practical advantages of this method. Since under tropical condition, the trifoliate orange has a poor growth behaviour and since the possibility of using other species such as sour orange and grapefruit as marker genes exist, crosses with 'Pera', 'Natal', 'Barao', and 'Valencia' sweet oranges (C. sinensis (L.) Osbeck) were made and true nucellar plants were obtained and released. In 1975, an experiment was carried out in order to determine the effectiveness of these species on 'Valencia', 'Pera', and 'Hamlin' sweet oranges and 'Ponkan' tangerine, (C. reticulata Blanco). Based on data regarding pollen germination, fruit set, number of seeds per fruit, poliembryony, seed germination and an estimate on the proportion of nucellar and zygotic seedlings, it seems that 'Duncar' grapefruit (C. paradisi Macf.) and sour orange can function as successfully as trifoliate as far as the attainment of nucellar lines is concerned. However, a survey made on the budded trees 7 years after planting showed that no zygotic trees existed. This leads to the conclusion that the use of crosses with any marker gene species could be dispensable.
653 $agrapefruit
653 $aMarker gene
653 $asour orange
653 $awing-petiole
700 1 $aCUNHA SOBRINHO, A. P. D.
700 1 $aSOARES FILHO, W. dos S.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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