O processo de infecção das raízes do feijão jugo (vigna subterrânea) por fungos micorrízicos no solo arenoso do campus, e viveiros da estufa

Abstract

Jugo beans are the second legume in the country in terms of cultivated area (excluding peanuts), which has been greatly underestimated by research. Even at the international level, little work is done on beans and much less in Mozambique. The trial for the present study was set up in March 2000, in the sandy loam soil of the campus and nurseries of the greenhouse of the Department of Biological Sciences of UEM in Maputo. The investigation started one week after sowing, extending until April of the same year, with a daily sampling, excluding Saturdays and Sundays, during a period of 7 weeks. The objectives of this work were to analyze the process of infection of the roots of the common bean (Vigna underground L.) by soil mycorrhizal fungi, symbiotic nitrogen fixation and the growth of a variety of the common bean from white seeds. Sampling in the present study consisted of a destructive analysis of eight plants harvested daily. The analysis of mycorrhizal fungus infection was based on the microscopic observation of ten root segments with about 1cm in length for each of the eight plants of each daily sample, and symbiotic nitrogen fixation based on the number of nodules. In turn, vegetative growth was analyzed through the dry weights of leaves, stems, roots and leaf area (TRADUÇÃO NOSSA)