...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>African Journal of Agricultural Research >Effect of drought on water use efficiency, agronomic traits and yield of spring wheat landraces and modern varieties in Northwest China
【24h】

Effect of drought on water use efficiency, agronomic traits and yield of spring wheat landraces and modern varieties in Northwest China

机译：干旱对西北地区春小麦地方品种及现代品种水分利用效率，农艺性状和产量的影响

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

摘要

A pot experiment with five typical landraces (Heshangtou, Hongnong No. 1, Dingxi 24, Damaizi and Jieba), three modern varieties (Qingchun 533, Plateau 602 and Abbondanza) and two water levels was carried out in the present study. The result showed that fertile spike, plant height, grains number of main spike (except Dingxi 24), above ground dry material, grain yield and grain yield water use efficiency of all varieties decreased, but grain weight (except Qingchun 533 and Plateau 602) and harvest index (except Plateau 602) of all varieties increased from 70% to 40% field capacity. The landraces had more fertile spikes, higher plant height, more above ground dry material (except Jieba), higher evaporation transpiration and lower harvest index than modern varieties under both 70% and 40% field capacity. Modern varieties had more grain number of main spike and grain weight than landraces under 70% field capacity on the whole. Although Qingchun 533 and Abbondanza had higher leaf-level water use efficiency than other varieties from heading stage to 30 days after anthesis, still they had lower grain yield water use efficiency than Heshangtou, Dingxi 24 and Damaizi under 40% field capacity. Varieties with higher evaporation transpiration and above ground dry material (higher ability of soil moisture capture) always had higher grain yield, grain yield water use efficiency and drought tolerance under drought stress.
机译：本研究对五个典型地方品种（鹤山头，洪农1，定西24，大麦子和解坝），三个现代品种（清春533，高原602和阿邦丹扎）和两个水位进行了盆栽试验。结果表明：所有品种的增产穗数，株高，主穗粒数（定西24除外），地上干物质，籽粒产量和籽粒水分利用效率均降低，但籽粒重（青春533和高原602除外）所有品种的收获指数（高原602除外）均从70％提高到40％。与现代品种相比，在70％和40％的田间生产能力下，这些地方品种的穗粒肥沃，株高更高，高于地面干燥物质（除ba坝），更高的蒸发蒸腾和更低的收获指数。在整体田间持水量为70％的情况下，现代品种的主要穗粒数和粒重比地方品种更多。虽然从抽穗期到开花后30天，清春533和阿邦丹扎的叶面水分利用效率均高于其他品种，但在40％的田间持水量下，它们的谷物产量水分利用效率仍低于鹤山头，定西24和大麦子。蒸发蒸腾作用和地上干燥物质含量较高（土壤水分捕获能力较高）的品种在干旱胁迫下始终具有较高的籽粒产量，籽粒水分利用效率和耐旱性。

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