黄淮旱地组小麦品种抗旱性鉴定比较分析

为了解近年来黄淮冬麦区旱地组小麦品种抗旱性的整体情况,对2017—2019年黄淮冬麦区132个区试品种（系）在干旱胁迫下的产量及抗旱指数,穗数、穗粒数、千粒重、株高等性状及抗旱系数,进行分析总结。结果表明：黄淮旱肥组、旱薄组、北部组区试品种（系）近年来品种的抗旱性趋势大体相同,胁迫情况下产量总的变化是旱肥组>旱薄组>北部组,且呈逐年稳中有升的趋势,从抗旱指数看,黄淮旱地小麦品种的抗旱整体还处于偏弱的水平;抗旱性状表现为干旱胁迫下均有不同程度的受损,均以千粒重的受损程度最小,有效穗、穗粒数、株高受损程度最大。

Drought Resistance Identification of Wheat Varieties in Huanghuai Dryland Group: Comparative Analysis

To understand the overall situation of drought resistance of wheat varieties in dryland groups in Huanghuai winter wheat area, the yield and drought resistance index of 132 regional trial varieties (lines) from 2017 to 2019 under drought stress, as well as the spike number, kernels per spike, thousand-grain weight, plant height and other traits and drought resistance coefficient were analyzed. The results showed that varieties (lines) in the Huanghuai dry-fertilizer group, dry-thin group and northern group had the similar trend of drought resistance, the total yield under stress was dry-fertilizer group> dry-thin group> northern group, and showed a steady upward trend year by year. From the perspective of the drought resistance index, drought resistance of wheat varieties in the Huanghuai dryland was still at a weak level, drought resistance traits were damaged differently under drought stress, among the traits, the thousand kernel weight suffered the lightest damage, the effective panicle, panicle number and plant height were the most serious damaged.