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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、细胞膜透性、旗叶SOD活性、Q_2~- 产生速率、MDA含量、成穗数、穗粒数、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,用胚芽鞘长和主胚根长进行品种抗旱性鉴定和筛选具有较高的应用价值。
From 1996 to 1997, the field physiological characteristics of drought resistance of three wheat cultivars were studied by field plot test and indoor simulation test. The results showed that under water stress conditions, the root length, root length, root activity, proline content, membrane permeability, flag leaf SOD activity, Q 2 ~ - production rate, MDA content The number of spikes, grains per spike, 1000-grain weight and yield had the smallest increase and decrease, and the best drought resistance. The second was Yumai 2 and the second was Yumai 41 with the largest increase and decrease of drought resistance. Among many physiological indicators of drought resistance, it is of high application value to identify and screen the drought resistance of varieties with coleoptile length and main radicle length.