Formação de mudas de maracujazeiro "amarelo" sob níveis de sombreamento em Ji-Paraná/RO

• Autor(a) principal: Zanella, Fábio
• Data de Publicação: 2006
• Outros Autores: Soncela, Regiani, Lima, Ana Lúcia da Silva
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UFLA
• Texto Completo: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542006000500009; http://repositorio.ufla.br/jspui/handle/1/6274
• topic: Passiflora edulis; Crescimento vegetativo; Clorofila; Propagação vegetal; Vegetative growth; Chlorophyll; Plant propagation

The shading is an important technique used to the formation of passion fruit seedlings. Thus, the shadow intensity can directly affect the growth of the seedlings and the further formation of the orchard. The present work aimed at evaluating the growth and the photosynthetic pigments content in yellow passion fruit seedlings (Passiflora edulis Sims f. flavicarpa Deg.) grown under different shading levels. Four shading treatments were used: 0%; 30%; 50% and 80%, with five replications each one in a complete randomized design. After 90 days of the sowing the growth and the photosynthetic pigments concentration were analyzed. The seedlings growth was impaired under full sunshine. The most favorable shading treatments for the seedlings growth were 50% and 80%. The chlorophyll a/b ratio decreased and the total concentration of chlorophyll and carotenoids increased with the increase of the shading.