...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Revista Brasileira de Fruticultura >Fases da germina??o de sementes de Annona emarginata (Schltdl.) H. Rainer em diferentes temperaturas
【24h】

Fases da germina??o de sementes de Annona emarginata (Schltdl.) H. Rainer em diferentes temperaturas

机译：Annona emarginata（Schltdl。）H. Rainer种子在不同温度下的萌发阶段

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study was carried out with the aimed to identify the germination phases of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) seeds under different temperatures. Thus, the work was divided into two experiments: one for evaluating phases I and II, and a second one for phase III. The experimental design was completely randomized, with 3 treatments and 4 replicates of 25 seeds per plot in both experiments. Treatments consisted of constant temperatures equal to 25oC and 30oC, besides the alternate temperature 20-30oC (8-16h, respectively), under constant light. Humidity degree variation over time (experiment 1), and germination percentage and mean velocity (experiment 2) were assessed. Data were subjected to analysis of variance, and means were compared by the Tukey's test at 5% significance, besides polynomial regression. Humidity degree variation over time was evaluated through non-linear monomolecular regression; the parameters of functions were compared according to treatments, then fit and subjected to analysis of variance and Tukey's test at 5% significance. Seeds kept at 30oC had higher water absorption velocity, peaking 27.85% humidity degree during the change from phase I to phase II. When seeds were subjected to 25oC, phase I lasted 60 h, peaking 28.35% humidity degree. Under 20/30oC, such phase lasted 72 h, peaking 28.33% humidity degree. The temperature 30oC led to the highest imbibition velocity but not to a higher germination percentage (phase III), which was detected in seeds kept at 20/30oC.
机译：进行该研究的目的是鉴定在不同温度下“花生到赤土”（Annona emarginata（Schltdl。）H. Rainer）种子的萌发阶段。因此，这项工作分为两个实验：一个用于评估I和II期，另一个用于III期。实验设计是完全随机的，在两个实验中，每块地进行3种处理和4个重复，每块25个种子。在恒定光照下，除交替温度20-30oC（分别为8-16h）外，处理包括等于25oC和30oC的恒定温度。评估了湿度随时间的变化（实验1），发芽率和平均速度（实验2）。对数据进行方差分析，除多项式回归外，均以5％的显着性通过Tukey检验比较均值。通过非线性单分子回归评估湿度随时间的变化;根据治疗方法对功能参数进行比较，然后拟合并以5％的显着性进行方差分析和Tukey检验。保持在30oC的种子具有更高的吸水速度，在从第一阶段到第二阶段的转变过程中，湿度最高达到27.85％。当种子置于25oC下时，阶段I持续60 h，达到28.35％的湿度峰值。在20 / 30oC下，这种相持续了72小时，达到了28.33％的湿度最高峰。 30°C的温度导致最高的吸收速度，但并未导致更高的发芽率（III期），这在保持20/30°C的种子中被检测到。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号