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

Author(s)

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

Affiliation

^[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

• Document type: Journal article
• Source: ALLELOPATHY JOURNAL; v. 42, n. 2, p. 279-294, NOV 2017.
• Web of Science Citations: 0

Abstract

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)

• FAPESP's process: 13/03978-1 - Phytotoxic potential of Sesbania virgata seeds on germination and early growth of seedlings Leucaena leucocephala (Lam.)de Wit
• Grantee: Daiane Salete Broch Mignoni
• Support type: Scholarships in Brazil - Master
• FAPESP's process: 12/16332-0 - Storage and cell wall carbohydrates from plants and filamentous fungi: changes in response to alelochemicals and environmental conditions
• Grantee: Marcia Regina Braga
• Support type: Regular Research Grants