水稻种子发芽率检测常见问题及解决方法研究

水稻种子的发芽率会到水稻生产产生直接的影响,科学精准的种子发芽率能够确定科学的水稻种植播种量,从而获得水稻生产的高产效能。水稻种子发芽率检测是种子生产经营企业开展种子生产销售工作的重要工作,也是相关的管理部门开展种子市场监管的重要依据,因此对水稻种子发芽率检测的相关工作进行分析具有十分重要的意义。基于此,本文对水稻种子发芽率检测的相关问题进行了分析和探究。

快速检测玉米种子发芽率方法研究

为检测玉米种子的发芽率,帮助农户完成种子前期管理,相关人员应提高对快速检测玉米种子发芽率方法的关注。围绕快速检测玉米种子发芽率,以种子活力测定法及浸种时间阶梯法作为对象开展深入研究,为相关人员提供借鉴。

不同发芽床对水稻种子发芽率的影响

用发芽纸和河砂(深褐色细砂)作为发芽床,对水稻种子进行发芽率检测。结果表明,不同的发芽床对发芽率结果影响很大。分析发现砂床可以明显减少不正常幼苗所占的比例。因此,在对水稻种子进行发芽检测时,对于纸床检测发芽率不合格且不正常幼苗多的情况下,应该用砂床进行重新检测,以得出种子的真实发芽率。

种子发芽实验中应注意的问题

种子发芽率检测是制种的关键环节，针对目前发芽实验易出现的问题，笔者结合几年的工作实践，浅谈发芽实验中应注意的问题：

Ecotoxicological Tools for Landfarming Soil Evaluation in a Petrochemical Complex Area

The demand for simple and rapid bioassays in ecotoxicological evaluations is of paramount importance in order to speed up environmental monitoring programs.In this study we performed bioassays with lettuce seeds and two species of terrestrial isopods (Armadillidium vulgare and Porcellio dilatatus) for the ecotoxicological assessment of a landfarming soil from a petrochemical complex area.The solubilized content of test soil demonstrated a concentration-response type toxic effect on seed germination rate,and a delay on germination,but showed toxic effect on seedlings wet weight only at the highest concentration.Toxic effects were also observed in mortality rate and avoidance behavior of the two woodlice species.These results demonstrated the sensitiveness of the organisms studied,and highlighted the possibility to use these bioassays in environmental monitoring programs in areas contaminated with fossil fuels.