| 基于3种水分控制条件的玉米品种抗旱性综合评价 |
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| 引用本文： | 张文新,段迎新,章爽,杨晶淇,张建军,黄蕊,杨晓军,王富贵,薛吉全,张兴华.基于3种水分控制条件的玉米品种抗旱性综合评价[J].干旱地区农业研究,2022,40(1):163-174. |
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| 作者姓名： | 张文新 段迎新 章爽 杨晶淇 张建军 黄蕊 杨晓军 王富贵 薛吉全 张兴华 |
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| 作者单位： | 西北农林科技大学农学院 西北旱区玉米生物学与遗传改良重点实验室,陕西 杨凌712100;甘肃省农业科学院旱地农业研究所,甘肃 兰州730000;山西省农业科学院旱地农业研究中心,山西 太原030031;陕西省榆林市农业科学院,陕西 榆林719000;内蒙古农业大学农学院,内蒙古 呼和浩特010000 |
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| 基金项目： | 国家重点研发计划(2018YFD0101203) |
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| 摘 要： | 基于大田试验、人工控制生长环境的旱棚与PEG模拟干旱胁迫的水培试验,对8个玉米品种成株期及苗期的抗旱性进行系统研究,调查分析了不同品种在3种水分控制条件下农艺性状、生理指标及产量表现,筛选出综合抗旱较好的品种。结果表明:通过2 a 5个试验点的大田试验和2 a旱棚试验筛选的抗旱性较强品种一致,分别为九圣禾2468、陕单650、联创825和MC703,在干旱和灌水条件下产量较高且抗旱指数较大,其中在大田条件下的抗旱指数分别为0.910、0.909、0.907和0.873,具有较短的散粉吐丝间隔期(ASI)、较高的SPAD值、较多的干物质等特点;水培试验通过相关指标隶属值筛选出的抗旱品种有陕单650、先玉335、九圣禾2468和MC703,隶属值分别为0.871、0.697、0.680和0.596,具有较发达的根系、较强的生理酶活性等特点。综合3种水分控制条件,结合第一性状(产量、抗旱指数)和第二性状(根系、ASI、生理)等指标的鉴定结果,筛选出稳定抗旱的玉米品种为MC703、九圣禾2468和陕单650。
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| 关 键 词： | 玉米 抗旱性 抗旱指数 综合评价 |
Comprehensive evaluation of drought resistance in maize varieties based on three water conditions |
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| ZHANG Wenxin,DUAN Yingxin,ZHANG Shuang,YANG Jingqi,ZHANG Jianjun,HUANG Rui,YANG Xiaojun,WANG Fugui,XUE Jiquan,ZHANG Xinghua.Comprehensive evaluation of drought resistance in maize varieties based on three water conditions[J].Agricultural Research in the Arid Areas,2022,40(1):163-174. |
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| Authors: | ZHANG Wenxin DUAN Yingxin ZHANG Shuang YANG Jingqi ZHANG Jianjun HUANG Rui YANG Xiaojun WANG Fugui XUE Jiquan ZHANG Xinghua |
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| Institution: | Northwest A&F University, College of Agronomy, The key Laboratory of Biology and Genetics Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture, Yangling, Shaanxi 712100, China;Gansu Academy of Agricultural Sciences,Lanzhou, Gansu 730000, China;Dryland Agriculture Research Center, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi 030031,China;Yulin Academy of Agricultural Sciences, Yulin, Shaanxi 719000, China;Inner Mongolia Agricultural University, Agricultural College, Hohehot Municipality, Inner Mongolia 010000, China |
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| Abstract: | To identify the drought resistance ability for different maize varieties and select strong drought resistance varieties accurately, a systematic study about drought resistance was conducted at adult and seedling stages for 8 maize varieties based on field experiment, drought shed and PEG simulating drought stress hydroponic experiment. By investigating and analysis of agronomic characters, physiological indexes and yield characters under threecontrolled water conditions, varieties with better comprehensive drought resistance were screen out. These results showed, under 2 years 5 pilot field tests and 2 years dry shed experiments, the varieties including Jiushenghe 2468, Shandan 650, Lianchuang 825 and MC703 performed large drought resistance index (DRI) with higher yields under drought and irrigation conditions. The DRI for each variety was 0.910, 0.909, 0.907 and 0.873 in the field conditions respectively, which had shorter powder separation (ASI) and more dry matter with higher SPAD. Based on the hydroponic test,the varieties of Shandan 650, Xinyu 335, Jiushenghe 2468 and MC703 were selectedas drought resistant varieties,and its membership was 0.871, 0.697, 0.680 and 0.596, respectively. This group had more developed roots and strong physiological enzymatic activities. Combining the identification results of the first traits (yield, DRI) with the second traits (root, ASI, physiology) under three controlled water conditions, MC703, Jiushenghe 2468 and Shandan 650 were selected as drought resistant varieties. |
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| Keywords: | maize drought resistance DRI comprehensive evaluation |
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