Studying the physiological and biochemical behavior of Myrcianthes pungens seeds stored in different packages for up to ten months was the objective of this work. Seeds were collected in Toledo, Pato Bragado, and Marechal Cândido Rondon and stored in a cold and dry chamber (11 ºC and 6,3% RH) for ten months. The germination test and the germination speed index (GSI), the seedling length (SL), the seedling dry matter mass (DMS), and the tetrazolium (ZT) test were performed and, for each evaluation, the water content was determined. Non-parametric analysis was used. During storage, the water content of the seeds in the plastic and glass containers varied little, but decreased in the paper packaging. The germination was maintained for ten months when the seeds were stored in plastic containers and for two months in the glass and paper ones. The variables GSI, SL, and DMS presented upwards and downwards variations during the storage period. The ZT revealed that, in the plastic packaging, the seeds remained viable for up to ten months, in glass, up to two months, and in paper, up to four months. Therefore, seeds of Myrcianthes pungens with high initial quality can be stored in a cold and dry chamber in plastic bags, maintaining viability and vigor for a period of ten months
The aim of this study was to evaluate the quality of Senegalia polyphylla seeds from different trees by X-ray (XR) and electric conductivity (EC) tests. Seeds from three different trees were used. The seeds were classified through radiography in: full, malformed, with small damage and empty, and were used in the germination test. For the EC test, the best volume of water (50 and 75 mL) was initially tested at 25 °C, and subsequently, the different soaking times (12, 24, 48, 72, 96 and 120 hours) using the best volume of water. Concomitantly, the germination test was performed. Tree I presented a higher percentage of full seeds in XR, higher percentage of germination and fewer leachates in the EC; tree III, however, was the opposite. The tests showed to be efficient for the quality evaluation of Senegalia polyphylla seeds, differentiating the trees.
Aims:This study aimed to evaluate the effects of different light spectra (quality of light) on the germination and vigour of seeds of Dovyalis abyssinica Warb. Study Design: The treatments were arranged in a completely randomized experimental design. Place and Duration of Study: The experiment was conducted in the Laboratory of Seed Technology, belonging to the State University of Western Paraná (UNIOESTE), Marechal Cândido Rondon -Paraná, Brazil, in the period from May to June 2017. Methodology: The seeds were subjected to the following light regimes: white, blue, yellow and red, and the absence of light. Absence of light was obtained by the use of aluminium foil involving the gerbox type plastic boxes. The lights red, yellow and blue were obtained with cellophane, involving the gerbox boxes, and for the white light were used gerbox without coverage. The effects of treatments were evaluated using the following tests: germination, germination speed index and seedling performance. The results were tested for normality by the lilliefors test and subjected to analysis of variance (F test) and the means were compared by the Tukey test at 0.05 probability. Results: The germination percentage was similar (p > 0.05) among the absence of light, and Gibbert et al.; JEAI, 26(1): 1-5, 2018; Article no.JEAI.43853 2 yellow, red and white lights. The results shows that the absence of light which the seeds and seedlings of D. abyssinica were submitted, stimulated a super stretching. Conclusion: In general appearance, the results observed in this study show that despite the seeds of D. abyssinica present themselves as indifferent to light for germination; it was revealed that the quality of light to which the seeds and seedlings are subjected has significant influence in its development. Short Communication
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