• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of food, agriculture & environment >Comparative study on drought tolerance of wheat and wheat-Aegilops biuncialis 6Ub addition lines.
【24h】

Comparative study on drought tolerance of wheat and wheat-Aegilops biuncialis 6Ub addition lines.

机译：小麦和小麦-埃及神庙6U b 添加系的抗旱性比较研究。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Alien chromatin has been exploited in wheat genetic improvement for increased drought tolerance. Aegilops species have a variety of germplasm resources about abiotic stress tolerance. Some new germplasms have been bred from crossing between Aegilops biuncialis and Chinese Spring (CS). The information about a series of physiological responses on wheat-Ae. biuncialis lines to drought stress is important for precise evaluation of their drought tolerance and developing new tolerant lines. In the present study, two promising wheat-Ae. biuncialis 6Ub addition lines Ae9041 and Ae9061 and two strong drought-tolerant wheat varieties Shi 4185 (S4185) and Jinmai 47 (JM47) were used to specify the response of physiological and agronomic characteristics to drought stress. Germination test with different levels (0%, 15%, 20%, 25% and 30%) (w/v) with polyethylene glycol (PEG)-6000 simulated drought stress showed that the wheat-Ae. biuncialis 6Ub addition lines exhibited strong growth of coleoptile, radicle, shoot and higher seed reserve transfer rate under severe drought stress. In rainfed field trial, the wheat-Ae. biuncialis 6Ub addition lines maintained higher relative water content (RWC) than control wheat genotypes and showed positive agronomic performance in terms of spike length, spikelet number per spike, kernel number per spike, and grain yield except tall plant height. It was notable that Ae9061 manifested the lowest rate of excised-leaf water loss, the highest RWC and maximum grain yield under drought stress. These results indicated that the wheat-Ae. biuncialis 6Ub addition lines had stronger drought tolerance, which are of great potential to be used in wheat breeding programs designed to improve drought tolerance.
机译：外来染色质已被用于小麦遗传改良中，以提高抗旱性。埃及伊蚊具有有关非生物胁迫耐受性的多种种质资源。已经从比目鱼（Aegilops biuncialis）和中国春（CS）之间的杂交育出了一些新种质。有关小麦Ae的一系列生理反应的信息。 Biuncialis抗旱品系对于准确评估其耐旱性并开发新的耐性品系很重要。在本研究中，两个有前途的小麦Ae。用biuncialis 6U b 添加系Ae9041和Ae9061以及两个抗旱性强的小麦品种Shi 4185（S4185）和Jinmai 47（JM47）来确定生理和农艺特性对干旱胁迫的响应。用聚乙二醇（PEG）-6000模拟干旱胁迫在不同水平（0％，15％，20％，25％和30％）（w / v）的发芽试验中显示小麦Ae。在严重干旱胁迫下，biuncialis 6U b 添加系表现出胚芽鞘，胚根，芽的强劲生长，并且种子储备的转移速率更高。在雨育田间试验中，小麦Ae。 Biuncialis 6U b 添加系保持的相对水分含量（RWC）高于对照小麦基因型，并且在穗长，每穗小穗数，每穗粒数和除高以外的谷物产量方面表现出正的农艺性能植物高度。值得注意的是，Ae9061在干旱胁迫下表现出最低的切叶失水率，最高的RWC和最大的谷物产量。这些结果表明小麦Ae。 biuncialis 6U b 添加系具有较强的耐旱性，在旨在提高耐旱性的小麦育种计划中具有巨大的潜力。

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