Conservação de sementes de marizeiro <i>Geoffroea spinosa</i> Jacq. utilizando diferentes embalagens e ambientes

Abstract

RESUMOO marizeiro (Geoffroea spinosa Jacq.) é uma espécie florestal importante, sobretudo por ser adaptada às condições de matas ciliares do semi-árido e ecossistemas associados, ocorrendo em vastas áreas do Nordeste brasileiro e no vale do rio São Francisco, sempre restrita a ambientes sazonalmente inundados. Este trabalho teve como objetivos avaliar o efeito de diferentes tipos de embalagens e do período de armazenamento sobre o processo germinativo e o vigor de sementes de Geoffroea spinosa Jacq. acondicionadas também em diferentes ambientes. O experimento foi instalado no Laboratório de Ecologia Vegetal do CCA/UFPB, seguindo um delineamento inteiramente casualizado. As sementes foram distribuídas em dois ambientes (condições naturais, no laboratório e câmara fria), acondicionadas em dois tipos de embalagens (sacos de papel e sacos plásticos) durante cinco períodos de armazenamento: 0, 15, 30, 60 e 90 dias. Foram avaliados o teor de água, o índice de velocidade de emergência, a massa seca e o comprimento de plântulas. Os dados foram submetidos à análise de regressão polinomial. Na embalagem plástica e no ambiente de câmara fria, houve menor redução da viabilidade e do vigor ao longo do armazenamento. As sementes acondicionadas em sacos de papel e armazenadas em ambiente de laboratório perderam rapidamente a viabilidade e o vigor a partir dos 30 dias de armazenamento. Palavras-chave: matas ciliares; sementes florestais; armazenamento; viabilidade. ABSTRACTGeoffroea spinosa Jacq., commonly known as marizeiro in Brazil, is an important tree species, mainly because it is adapted to riparian forest conditions in semi-arid and associated ecosystems. The species occur in large areas of northeastern Brazil and in the São Francisco river valley, always restricted to seasonally flooded environments. This study aimed to evaluate the effect of different types of packaging and storage periods, as well the influence of environments on the process of seed germination and vigor of Geoffroea spinosa. The experiment was carried out at the Laboratory of Plant Ecology -CCA/UFPB, following a completely randomized design. The seeds were distributed among two environments (natural conditions in the laboratory and cold room), packed in two types of packaging (paper bags and plastic bags) for five periods of storage: 0; 15; 30; 60 and 90 days. Water content, the emergence velocity index, dry weight and length of seedlings were evaluated. The data were submitted to a polynomial regression analysis. In plastic packaging and the environment of the cold room there was less reduction of viability and vigor during

STORAGE OF PITOMBEIRA SEEDS [Talisia esculenta (A. St. Hil) Radlk - SAPINDACEAE] IN DIFFERENT ENVIRONMENTS AND PACKAGINGS

“…-Malphiguiaceae) from the 60 th storage day, packed in Kraft paper bag and under laboratory natural environment (27.2 ± 2 °C, 80% RH). In marizeiro seeds (Geoffroea spinosa Jacq -Fabaceae, Papolionoideae) kept in Kraft paper bag and stored in laboratory natural conditions (23.5 °C and 19.2 °C, 85% RH), rapid decrease in germination and vigor was observed from the 30 th storage day (SOUZA et al, 2011).…”

Storage of Calophyllum brasiliense Cambess. seeds

“…In contrast, Souza et al (2011), studying the storage of Geoffrea spinosa, a recalcitrant species from riparian forests (34.16% moisture), reported that cold storage and polyethylene packaging did not favor storage and, in the first three storage periods, there was a gradual decrease, followed by a slight increase in storage to ninety days.…”

How do meteorological factors alter the phenology of a neotropical tree species?

“…In this respect, G. spinosa has occurrence restricted to certain habitats and may be vulnerable to extinction due to anthropic actions. However, remedial actions are hampered by the lack of data on the species (Souza et al, 2011).…”