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首页> 外文期刊>Revista Brasileira de Fruticultura >Sensibilidade à desseca??o e aoarmazenamento em sementes de Eugenia pyriformis Cambess. (uvaia)
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Sensibilidade à desseca??o e aoarmazenamento em sementes de Eugenia pyriformis Cambess. (uvaia)

机译：对Eugenia pyriformis Cambess种子的干燥和贮藏敏感性。 （葡萄）

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摘要

This study aimed to evaluate the desiccation sensivity and storage and longevity behavior of uvaia seeds (Eugenia pyriformis Camb.). It was carried out with seeds from fruits collected at Amambai-MS city. To study the desiccation sensitivity, a protocol based on the dehydration level on each five percentage points reaching 45, 40, 30, 25, 20, 15, 10 and 5% seeds moisture contents was used. To study the longevity of seeds during storage were tested the following conditions of cold and dry chamber (16 ± 1C o / 40% UR), refrigerator (5 ± 1C o) and freezer (-18 ± 1 o C) for 30 days and seeds sown soon after processing constituted the control treatment. Seeds were sowed between sand at 20/30 oC at 10 h light/14 h darkness in B.O.D. Uvaia seeds are desiccation sensitivity and can not tolerate drying below 5% moisture content. The moisture content decrease caused the reduction on the fresh mass, primary root length, hypocotyls length and on the seedlings total length reduction as in the germination medium time. The fresh seeds presented approximately 77% germination and the 5% moisture content dehydration reduced the germination to 15%. The storage conditions under low temperatures and seeds dehydration reduced seed germination, thus indicating a recalcitrant behavior of uvaia seeds.
机译：这项研究旨在评估Uvaia种子（Eugenia pyriformis Camb。）的干燥敏感性，贮藏和长寿行为。它是使用Amambai-MS市收集的水果种子进行的。为了研究干燥敏感性，使用了基于脱水水平的协议，每五个百分点达到45、40、30、25、20、15、10和5％种子水分含量。为了研究种子在储存过程中的寿命，在以下条件下测试了冷室和干燥室（16±1C o / 40％UR），冰箱（5±1C o）和冷冻室（-18±1 o C）30天和加工后不久播种的种子构成对照处理。种子在B.O.D.中在20/30 oC的沙子中播种，光照10小时/黑暗14小时。 Uvaia种子具有干燥敏感性，不能忍受水分含量低于5％的干燥。水分含量的减少导致发芽中期的新鲜质量，初生根长度，下胚轴长度和幼苗总长度减少。新鲜种子发芽率约为77％，而5％的水分脱水会使发芽率降低至15％。低温和种子脱水条件下的储存条件减少了种子发芽，因此表明葡萄籽的顽强行为。

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