Seedling growth of the invader Calotropis procera in ironstone rupestrian field and seasonally dry forest soils



Document title: Seedling growth of the invader Calotropis procera in ironstone rupestrian field and seasonally dry forest soils
Journal: Neotropical : biology and conservation
Database: PERIÓDICA
System number: 000325259
ISSN: 1809-9939
Authors: 1
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Institutions: 1Universidade Federal de Minas Gerais, Instituto de Ciencias Biologicas, Belo Horizonte, Minas Gerais. Brasil
2Universidade Federal de Pernambuco, Centro de Ciencias Biologicas, Recife, Pernambuco. Brasil
Year:
Season: May-Ago
Volumen: 4
Number: 2
Pages: 69-76
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
English abstract The present study evaluated the growth, biomass allocation and nutrient content in seedlings of the invasive and exotic especies Calotropis procera (Aiton) W.T. Aiton (Apocynaceae), cultured in greenhouse, in soils from two different ecosystems: ironstone rupestrian fi elds (Canga) of Brumadinho, Minas Gerais; and seasonally dry forest (Caatinga), of Serra Talhada, Pernambuco. Seedlings from the Canga treatment were signifi cantly higher in concern to stem length, leaf biomass and total biomass. In respect to nutrient content there were higher phosphorus, iron and zinc levels in the seedlings from the Canga treatment. The iron accumulation indicates the capacity of C. procera to tolerate high levels of iron, which is characteristic of Canga soils. In the Caatinga treatment there was a higher root/ shoot ratio and a higher potassium accumulation in the plant tissues. The obtained results suggest that C. procera displays a good adaptation to the edaphic conditions of the Canga treatment, which indicates an invasive potential towards the Canga ecosystem
Portuguese abstract O presente estudo avaliou o crescimento, a alocação de biomassa e os teores de nutrientes em plântulas da espécie exótica e invasora Calotropis procera (Aiton) W.T. Aiton (Apocynaceae), cultivadas em casa de vegetação, em solos provenientes de dois ecossistemas distintos: campo rupestre ferruginoso (Canga, Brumadinho, Minas Gerais) e fl oresta seca sazonal (Caatinga, Serra Talhada, Pernambuco). Plântulas do tratamento Canga foram signifi cativamente maiores em relação ao comprimento do caule, biomassa de folhas e biomassa total. Em relação aos teores de nutrientes, houve maior teor de fósforo, ferro e zinco nos tecidos de plântulas do tratamento Canga. O acúmulo de ferro indica a capacidade de C. procera em tolerar os altos teores de ferro característicos dos solos de Canga. No tratamento Caatinga, houve uma maior razão raiz-ramo e maior acúmulo de potássio em seus tecidos. Os resultados obtidos sugerem que C. procera demonstra boa adaptação às condições dos solos do tratamento Canga, indicando um potencial para invasão no ecossistema de Canga
Disciplines: Biología
Keyword: Angiospermas,
Ecología,
Plantas invasoras,
Plántulas,
Crecimiento,
Suelos forestales,
Calotropis procera,
Apocynaceae
Keyword: Biology,
Angiosperms,
Ecology,
Invader species,
Seedlings,
Growth,
Forest soils,
Calotropis procera,
Apocynaceae
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