Data/hora: 02/06/2024 02:18:25

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 27/07/1992
Data da última atualização: | 27/07/1992
Autoria: | WILLIAMSON, J. G.; CASTLE, W. S.; KOCH, K. E.
Afiliação: | Institute of Food and Agricultural Sciences, University of Florida.
Título: | Growth and 14 C-Photosynthate Allocation in Citrus Nursery Trees Subjected to One of three Bud-forcing Methods.
Ano de publicação: | 1992
Fonte/Imprenta: | Jornal of the American Society for Horticultural Science, v 117, n1, P: 37-40, 1992. U.S.A
ISSN: | 0003-1062
Idioma: | Inglês
Conteúdo: | Thee commercially employed treatments to force scion bud growth were compared using greenhousegrown 'Carrizo' citrange [Citrus sinensis (L.) osb. x poncirus trifoliata (L.) Raf.] seedlings budded with 'Hamlin' orange [Citrus sinensis (L.) Osb.]. scion buds were forced either by 1) cutting off (removing the rootstoch shoot above the bud union); 2) lopping (cutting half-way throuhg the rootstoch shoot abore the bud union and breaking over the rootstoch stem); or 3) bending the rootstoch shoot to its base and tying it in position). Plants were harvested, dried, and weighed at various time after scion shoot emergence. Plants on which rootstoch shoots remained attached (lopping or bending) had the largest scion leaf area and gained the most scion and whole-plant dry weight. Bending rootstock shoots also resulted in a longer scion, more leaves, and higher root dry weight than did removal of rootstock shoots by cutting off. Few differences in overall growth were observed among trees retaining their rootstock shoots after two scion growth flushes. Analysis of 14C-photosynthate transfer from labeled rootstock leaves showed that bending allowed the greatest movement of labeled assimilates to other plant parts during the 24 hours after 14CO2 fixation. Radiolabeled photosynthates from rootstock leaves were partitioned primarily to shoots during scion growth flushes and to roots during periods between growth flushes.
Palavras-Chave: | Enxertia; Propagacao.
Thesagro: | Citrus Sinensis.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)

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