Phytotoxic effects of Leucaena leucocephala seeds on seeds germination and seedling growth of rice and tomato

Autor(es)

Mignoni, D. S. B. ^[1] ; Sant'ana Cabral, R. ^[2] ; Torres, L. M. B. ^[2] ; Braga, M. R. ^[2]

Afiliação do(s) autor(es)

^[1] Inst Bot, Programa Posgrad Biodiversidade Vegetal & Meio Am, Av Miguel Stefano 3687, BR-04301902 Agua Funda, SP - Brazil

^[2] Inst Bot, Dept Plant Physiol & Biochem, Av Miguel, Estefano 3687, BR-04301902 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ALLELOPATHY JOURNAL; v. 42, n. 2, p. 279-294, NOV 2017.
• Citações Web of Science: 0

Resumo

Under laboratory conditions, we assayed the phytotoxic potential of L. leucocephala seed leachates from (1 to 5 d after start of imbibitions) on germination and seedling growth of tomato (Solanum lycopersicum L.) and rice (Oryza sativa L.). The chemical composition of L. leucocephala seed leachates was also determined. The L. leucocephala seed leachates did not affect the germination, while root and shoot lengths were significantly reduced. In the beginning of imbibition the mimosine, abscisic acid, sugars, phenolics, proteins and amino acids were found in L. leucocephala seed leachates. The mimosine was very inhibitory to seedling growth of tomato than rice. The presence of mimosine in seed leachates could explain the high toxicity of L. leucocephala on the development of assayed crops. (AU)

• Processo FAPESP: 13/03978-1 - Potencial fitotóxico de sementes de Sesbania virgata sobre a germinação e o crescimento inicial de plântulas de Leucaena leucocephala (Lam.)de Wit
• Beneficiário: Daiane Salete Broch Mignoni
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 12/16332-0 - Carboidratos de reserva e de parede celular de plantas e de fungos filamentosos: alterações em resposta a aleloquímicos e a variações ambientais
• Beneficiário: Marcia Regina Braga
• Modalidade de apoio: Auxílio à Pesquisa - Regular