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Does inter-plant variation in sprouting time affect the growth/reproduction trade-off and herbivory in a tropical tree species? Acta Botanica
Fagundes,Marcilio; Xavier,Renata C.; Ramos,Letícia F.L.; Siqueira,Walisson K.; Reis-Junior,Ronaldo; Souza,Matheus L..
ABSTRACT The timing of phenological events varies within and among populations, affecting the performance of individual plants differently. We evaluated the effects of relative variation in sprouting time on the display of reproductive events, vegetative growth and herbivory in Copaifera langsdorffii (Fabaceae). A total of 93 trees of C. langsdorffii was monitored daily to determine their sprouting time. We collected ten terminal branches of each plant to evaluate vegetative growth, production of defense compounds and insect herbivore damage. The sprouting time for the studied population lasted 67 days. Variation in sprouting time did not affect the probability of plants to enter the reproductive stage. Plants that entered the reproductive stage showed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Copaifera langsdorffii; Flowering trigger; Herbivory escape; Phenological asynchrony; Resource allocation.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000400602
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Intraspecific variation in seed size and light intensity affect seed germination and initial seedling growth of a tropical shrub Acta Botanica
Veloso,Aniele C. R.; Silva,Priscila S.; Siqueira,Wallison K.; Duarte,Karen L.R.; Gomes,Ingrid L. V.; Santos,Henrique T.; Fagundes,Marcilio.
ABSTRACT Seed germination and seedling performance are affected by environmental factors and seed traits. In this study we investigated the effects of seed size and light intensity on germinability and seedling development of Copaifera oblongifolia. A total of 225 seeds were individually weighed and sown in three germination trays composed of 75 cells each. Each tray was placed in a different germination chamber with controlled photoperiod, temperature and light intensity. Seed size showed a positive relationship with time required for seed germination, and seeds exposed to high light intensity required more time to germinate. Seed size did not affect germination percentage, but seeds sown under high light intensity had a lower germination percentage than...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Cerrado; Copaifera oblongifolia; Diversity conservation; Dominancy; Habitat invasion; Seed-seedling conflict.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400736
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