Production of Antirrhinum majus seedlings on different substrates and containers

Abstract

The aim of this study was to determine the effects of type of substrate and expanded polystyrene trays on the production of snapdragon seedlings. The experiment was completely randomized with a 3 x 2 factorial design (substrates x number of tray cells) and four replications. 'Baixa Sortida' snapdragon seeds, commercial substrate A (rice husk + vermiculite), commercial substrate B (Sphagnum + torrefied rice straw + perlite), A + B mixture (1:1) and expanded polystyrene trays with 72 and 128 cells were used. The characteristics evaluated were plant emergence rate, percentage of plant emergence at 14, 21, 28 and 35 days, number of leaves at 44 and 58 days after sowing, shoot height, root length and plant dry matter. The results showed that the substrates directly influenced the production of snapdragon seedlings. Seedling emergence and seedling development is favored by the mixture of the substrates A and B (1:1) as well as by the use of expanded polystyrene trays with 72 cells due to the higher volume available to the seedling.

Condicionamento fisiológico de sementes de chicória com Ascophyllum nodosum

“…A segunda etapa da pesquisa para verificar o efeito do condicionamento fisiológico na produção de mudas, foi realizada de acordo com a seguinte metodologia: Emergência de plantas: Quatro repetições de 50 sementes foram distribuídas em bandejas de 128 células (22,5 ml por célula), com substrato comercial para hortaliças composto de turfa e casca de arroz, dispostas sobre bancada, com irrigação por aspersão. Aos sete, 14, 21 e 28 dias após a semeadura (DAS) foram avaliados porcentagem de emergência de plântulas, altura de mudas e número de folhas, seguindo metodologia de Silva et al (2017) em 20 plantas, aleatoriamente, de cada repetição. Aos 28 DAS avaliou-se o comprimento de raízes de 20 plantas retiradas do substrato, aleatoriamente, lavadas em água e secas com papel toalha, e posteriormente realizada a medição com régua graduada, conforme SILVA et al (2017).…”

Effect of Transplanting Date and Pot Shapes on Flowering and Seed Production of Antirrhinum Majus L. Plants

“…In comparison to circular pots, square pots have a larger cultivated area and more effective irrigation in the root zone. They also allow more precise placement and appear decorative when delineating hallways or doorways [8,9] One of the most important aspects in the development of seedlings is the type and size of the pots, which have a significant impact on the growth and development of roots and buds [10]. As a result of the branches receiving fewer nutrients, the size, area, and growth of the roots and leaves are all diminished [11], alterations will also occur in the amount of dry matter, nutrient uptake, and hormone assimilation will also occer [12].…”