2008
DOI: 10.1590/s1516-89132008000400003
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Development and growth curve of the pine cones of Araucaria angustifolia (Bert.) O. Ktze, in the region of Curitiba - PR

Abstract: The objectives of this work were to describe the development and growth rate of the pine cones of Araucaria angustifolia during and after the pollination period, to identify the period of maximum growth of the cones and the period of pollination and maturation of the pine nuts. The adult individuals were found at the Setor de Ciencias Agrarias of the UFPR, in Curitiba -PR. Collections and measurements of pine cones were made in 2003 and 2005. The diameter and the length of the pine cones were measured 15 diffe… Show more

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Cited by 11 publications
(12 citation statements)
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“…The lower total content of soluble carbohydrates may have been reflected in the lower physiological quality of this variety due to less availability of soluble reserves for the development of seeds and seedlings. In general, pollination of A. angustifolia occurs between September and October regardless of the variety (Mattos, 2011), and cone maturation occurs after 20 months (Anselmini & Zanette, 2008). Thus, the seeds of the P-25 variety ripen more quickly and therefore could accumulate lower levels of reserves during seed development.…”
Section: Resultsmentioning
confidence: 99%
“…The lower total content of soluble carbohydrates may have been reflected in the lower physiological quality of this variety due to less availability of soluble reserves for the development of seeds and seedlings. In general, pollination of A. angustifolia occurs between September and October regardless of the variety (Mattos, 2011), and cone maturation occurs after 20 months (Anselmini & Zanette, 2008). Thus, the seeds of the P-25 variety ripen more quickly and therefore could accumulate lower levels of reserves during seed development.…”
Section: Resultsmentioning
confidence: 99%
“…A descrição de Mattos (2011) assemelhou-se aos dados obtidos neste estudo, uma vez que o número de plantas masculinas foi maior que o número de plantas femininas naquela população. Conhecer a distribuição de plantas juvenis, masculinas e femininas em uma população nativa, bem como conhecer a ontogenia e o rendimento de sementes dos megaestróbilos, são dados importantes para a compreensão sobre a dinâmica e a regeneração de uma população nativa (BURLINGAME, 1914, SHIMOYA, 1962, MANTOVANI et al, 2004, ANSELMINI et al, 2006, ANSELMINI & ZANETTE, 2008. Observações de campo sobre a fenologia reprodutiva constituem ferramentas essenciais para estimar o número de indivíduos que estão contribuindo, efetivamente, na reprodução de uma determinada população de espécies florestais.…”
Section: Discussionunclassified
“…Nas plantas femininas, é possível reconhecer simultaneamente na mesma planta megaestróbilos em dois ou três diferentes estágios de desenvolvimento (ANSELMINI et al, 2006, ANSELMINI & ZANETTE, 2008. De maneira semelhante ao que foi descrito por Anselmini et al (2006) e Anselmini & Zanette (2008) em seus trabalhos com A. angustifolia, foi possível observar até dois diferentes estágios de desenvolvimento dos megaestróbilos nas plantas femininas estudadas.…”
Section: Discussionunclassified
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“…This time interval takes approximately 20 months (MANTOVANI et al, 2004;ANSELMINI;ZANETTE, 2008). The size of Araucaria angustifolia (Bertol.…”
Section: Paludo Gf Et Almentioning
confidence: 99%