The incidence of leaf diseases is one of the main factors limiting the tomato crop production, increasing the production cost due to excessive pesticide application. The basal leaf removal could reduce inoculum sources, disease severity and contribute to reducing the use of pesticide. Aiming to evaluate the efficiency of this practice on the reduction of tomato leaf diseases and the effect in the quality and in the productivity of the tomato plants for in natura consumption, two experiments were carried out to test four levels of basal leaf removal. Basal leaves removal, at fruit harvesting, is efficient in reducing the infected plant area by disease, what can mean smaller disease severity and least inoculum source in the field. Also, the all basal leaf removal does not affect yield and quality of the tomato fruits. Other studies are necessary to evaluate the effect of adopting this practice in different planting dates, spacing, varieties, successive plantings and the financial viability of adopting this practice.

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-The objective was to evaluate the percentage of emergency plantlets and lipid peroxidation in seeds of 29 half-sib progenies of yellow passion fruit (Passiflora edulis Sims.) after 24 months under storage. The experimental design was completely randomized, with four replications of 50 seeds each, from which the treatments were the progenies (1-29). The evaluation of the percent plantlet emergency was accomplished at 14 and 28 days after sowing. The lipid peroxidation of the seeds was expressed as malondialdehyde (MDA) content that was determined by the TBARS method. Approximately 21% of those half-sib progenies maintained the viability of their seeds for twenty-four months under storage. The results point out a remarkable genetic variability for vigor and emergency of the yellow passion fruit plantlets, with occurrence of individuals with high and other ones with low capacity to maintaining the physiologic quality of their seeds after storage. Index terms: Passiflora edulis, genotypes, seeds, vigor, stress oxidative. PEROXIDAÇÃO LIPÍDICA E EMERGÊNCIA EM SEMENTES DE PROGÊNIES DE MARACUJAZEIRO-AMARELORESUMO -O objetivo foi avaliar a porcentagem de emergência de plântlulas e a peroxidação lipídica de sementes de 29 progênies de meio-irmãos do maracujazeiro-amarelo (Passiflora edulis Sims.), após 24 meses sob armazenamento. O delineamento experimental foi o inteiramente casualizado, com quatro repetições de 50 sementes cada, a partir do qual os tratamentos foram as progênies (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28 e 29). A avaliação da porcentagem de emergência das plântulas foi realizada aos 14 e 28 dias após a semeadua. A peroxidação lipídica das sementes foi expressa como conteúdo de malondialdeído (MDA), que foi determinado pelo método de TBARS. Aproximadamente 21% das progênies de meios-irmãos mantiveram a viabilidade de suas sementes para 24 meses de armazenamento. Os resultados apontam para uma variabilidade genética quanto ao vigor e á emergência de plântulas de maracujazeiro-amarelo, com ocorrência de indivíduos com alta e outros com baixa capacidade de manter a qualidade fisiológica de suas sementes após o armazenamento.

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