Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/28592
Título: Anatomy and physiology of Cattail as related to different population densities
Título(s) alternativo(s): Anatomia e fisiologia de Taboa em relação a diferentes densidades populacionais
Palavras-chave: Plants – Anatomy
Plants – Physiology
Plantas – Anatomia
Plantas – Fisiologia
Typha angustifolia
Data do documento: Jan-2015
Editor: Sociedade Brasileira da Ciência das Plantas Daninhas
Citação: CORRÊA, F. F. et al. Anatomy and physiology of Cattail as related to different population densities. Planta Daninha, Viçosa, MG, v. 33, n. 1, p. 1-12, jan./mar. 2015.
Resumo: The objective of this work was to evaluate the effects of the population density of Typha angustifolia plants in the anatomical and physiological characteristics. Plants were collected from populations of high density (over 50% of colonization capacity) and low density (less than 50% of colonization capacity) and cultivated under controlled greenhouse conditions. Plants from both populations were grown in plastic trays containing 4 L of nutritive solution for 60 days. At the end of this period, the relative growth rate, leaf area ratio, net assimilatory rate, root/shoot ratio, leaf anatomy, root anatomy, and catalase and ascorbate peroxidase activities were evaluated. Plants from high density populations showed increased growth rate and root/shoot ratio. Low density populations showed higher values of stomatal index and density in leaves, as well as increased palisade parenchyma thickness. Root epidermis and exodermis thickness as well as the aerenchyma proportion of high density populations were reduced, these plants also showed increased vascular cylinder proportion. Only catalase activity was modified between the high and low density populations, showing increased values in low density populations. Therefore, different Typha angustifolia plants show differences in its anatomy and physiology related to its origins on high and low density conditions. High density population plants shows increased growth capacity related to lower apoplastic barriers in root and this may be related to increased nutrient uptake capacity.
URI: http://repositorio.ufla.br/jspui/handle/1/28592
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