• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>African Journal of Biotechnology >Seed ageing and field performance of maize under water stress
【24h】

Seed ageing and field performance of maize under water stress

机译：水分胁迫下玉米种子的老化和田间性能

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

摘要

A sub-sample of maize (cv.Ksc 301) seeds was kept as control or high vigor seed lot (V1) and two other sub-samples with about 15% moisture content were artificially aged at 40°C for 9 and 12 days (V2?and V3, respectively). Hence, three seed lots with acceptable normal germinations of 98% (V1), 92% (V2) and 88% (V3), but with different levels of vigor were provided.?Laboratory tests were carried out as completely randomized design with four replicates. However, the field experiment was conducted as factorial based on RCB design in three replicates. Factors were seed ageing (three levels) and irrigation treatments (irrigation after 70, 90, 110 and 130 mm evaporation).?Seeds were then sown with a density of 10 seeds m-2?on the9th?May, 2010.?Mean germination and emergence times significantly increased, but normal germination percentage, seedling dry weight and emergence percentage decreased with increasing seed ageing and decreasing seed vigor. As a result, plant biomass and grain yield per unit area for plants from aged seeds were considerably lower than those from non-aged seeds. No significant interaction of irrigation × seed ageing was observed for grain yield, suggesting that aged seeds had low yield under both well and limited irrigation conditions. Therefore, production of high vigor seeds and proper storage are necessary to ensure optimum stand establishment and satisfactory yield of maize under favorable and unfavorable field conditions.
机译：保留玉米子样品（cv.Ksc 301）作为对照或高活力种子批次（V1），另两个水分含量约15％的子样品在40°C人工老化9天和12天（分别为V2和V3）。因此，提供了三批种子，它们的正常发芽率分别为98％（V1），92％（V2）和88％（V3），但具有不同的活力水平。 。但是，基于RCB设计的三项重复实验是作为因子分析进行的。影响因素包括种子老化（三级）和灌溉处理（蒸发70、90、110和130 mm后灌溉）。然后在2010年5月9日播种种子，种子密度为10 m-2。出苗时间明显增加，但正常发芽率，幼苗干重和出苗率随种子衰老和种子活力的降低而降低。结果，来自老化种子的植物的植物生物量和单位面积的谷物产量显着低于未老化种子的植物。灌溉与种子老化之间没有显着的交互作用×籽粒的衰老，表明在良好和有限的灌溉条件下，老化的种子单产较低。因此，高产种子的生产和适当的储存对于确保在有利和不利的田间条件下确保最佳的林分建立和令人满意的玉米产量是必要的。

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