Water availability influences plant metabolism during the various stages of development, especially in the period between germination and seedling emergence. The aim of this study was to evaluate the effect of water deficit during the germination process on seeds of A. oleracea. The experiment was carried out in a completely randomised design, with four replications of 50 seeds. The treatments were arranged in ...
The objective of this study was to evaluate the efficiency of methods for overcoming dormancy in Caesalpinia ferrea seeds. The experimental design was completely randomized, with twelve treatments and four replicates of 25 seeds per experimental unit. The pre germinative treatments used were: control (T1); immersion in water at 100, 80 and 65 °C for 5 minutes (T2, T3 and T4, respectively); immersion in sulfuric...
Pithecellobium dulce destaca-se por apresentar potencial madeireiro e forrageiro, além de diminuir o risco de erosão do solo, aumentar a fixação de nitrogênio e possuir propriedades medicinais. A profundidade e a posição de semeadura são fatores importantes dentro do processo de germinação por garantir um desenvolvimento rápido e uniforme das plântulas. O objetivo deste estudo foi avaliar a influência da posiçã...
Mimosa tenuiflora Willd., popularly known as jurema-preta, is an arboreal species of great importance for the brazilian Northeast due to its uses as a medicinal plant and in the restoration of degraded soils. No information is available in the Rules for Seed Analysis and the Instructions for Seed Analysis of Forest Species regarding ideal conditions for of this species. Thus, this study aimed at evaluating the ...
Made available in DSpace on 2016-08-12T19:15:40Z (GMT). No. of bitstreams: 1 ClarissePB_DISSERT.pdf: 876109 bytes, checksum: 2b9b6e9c81e4877788386a95342c3ee2 (MD5) Previous issue date: 2010-01-28; Conselho Nacional de Desenvolvimento Científico e Tecnológico; This study aimed to evaluate the viability of catanduva seeds of stored for two hundred and ten days in controlled environmental and uncontrolled environm...
Objetivou-se avaliar a viabilidade do uso de indutores de enraizamento para a propagação vegetativa por estaquia do mofumbo. O experimento foi conduzido no período de setembro de 2011 a Junho de 2012 em casa de vegetação do Horto de Plantas Medicinais, do Departamento de Ciências Vegetais da Universidade Federal Rural do Semi-Árido – UFERSA, situada no município de Mossoró-RN. O delineamento experimental adotad...
Sementes de flamboyant (Delonix regia) apresentam germinação baixa e irregular devido à presença de dormência causada pela impermeabilidade do tegumento. Com a finalidade de determinar-se um método eficiente para acelerar e uniformizar a germinação, suas sementes foram submetidas à métodos de quebra de dormência. O delineamento experimental utilizado foi o inteiramente casualizado com oito tratamentos e quatro ...
O uso de substratos é um fator de extrema importância na produção de mudas de espécies florestais, sobretudo por proporcionar o seu rápido desenvolvimento. A presente pesquisa teve o objetivo de avaliar o efeito de diferentes substratos na produção de mudas de Pithecellobium dulce (Roxb.) Benth. Os tratamentos foram constituídos de subtratos obtidos de cinco misturas, nas seguintes proporções: S1 (solo + arei...
The gherkin is quite grown in northern and northeastern Brazil by uses water from wells often exhibit high levels of salt. Therefore, this paper aimed to evaluate the behavior of three gherkin cultivars when subjected to salt stress by soaking the seeds and irrigation at different levels of salinity. The treatments were completely randomized in factorial scheme 2 x 3 x 6 (seeds treated with and without pre-soak...
Controlled hydration can promote the germination and establishment of plants of various species. The objective of this study was to evaluate the effects of hydropriming on germination, emergence and seedling development of melon. To this end, melon seeds of the hybrids Mandacaru and Vereda, represented by two lots, were hydroprimed on paper towel at 20 °C until they reached 39.1% (Vereda) and 44.1% (Mandacaru) ...