小麦抗旱鉴定指标的筛选研究  

Study on the Screening of Drought Resistance Appraisal Standards on Wheat

作　　者：李友军[1] 马淑琴[2] 郭秀璞[1] 史国安[1] 付国占[1] 陈明灿[1] 

机构地区：[1]洛阳农业高等专科学校农学系,洛阳471003 [2]河南省农科院科技开发处,郑州450002

出　　处：《洛阳农业高等专科学校学报》1999年第1期7-10,共4页Journal of Luoyang Agricultural College

基　　金：河南省科委和洛阳市科委重大科技攻关项目

摘　　要：1996～1997年采取田间小区试验和室内模拟试验相结合的方法，对3个小麦品种的抗旱形态生理特性进行了研究。结果表明，在水分胁迫条件下．郑旱1号胚芽鞘长、主胚根长、根系活力、叶片脯氨酸含量、细胞膜造性、旗叶SOD活性、O2产生速率、MDA含量、成稳数、稳粒数、千粒重和产量的增减幅度最小，抗旱性最好，豫麦2号次之，豫麦41号的增减幅度最大．抗旱性最差。在众多抗旱形态生理指标中，用胚芽鞘长和主胶很长进行品种抗旱性鉴定和筛选具有较高的应用价值。The drought-resistant form and physiological characteristics for three wheat cultivars were studied with the method of field small block test and indoor simulated test from 1996 to 1997. The result showed that the change of the plumule sheath length、main radicle length, roots vigor, leaf proline content, pemeability of cell membrane,SOD activity in flag leaf,O2 producing rate, MDA content,ear number, grain number per spike, 1000-kernel weight and grain yield of Zhenghan NO. 1 is the smallest and the drought resistance is the best among the three what cultivars under the drought stress conditions. The drought resistance of Yumai NO. 2 is in the middle. The change of above standards of Yumai NO. 41 is the largest and the drought resistance is the worst. The plumule sheath length and the main radicle length in many drought resistance forms and physiologlcal standards are the best drought resistance appraisal standards for drought-resis- tant wheat cultivars screening.

关 键 词：抗旱指标 筛选 小麦 抗旱品种 

分 类 号：S512.103.4[农业科学—作物学]