水分胁迫对不同小麦幼苗期生长的影响及抗旱品种筛选  

Effects of Water Stress on Growth of Different Wheat Varieties at Seedling Stage and Selection of Drought Resistant Varieties

作　　者：傅晓艺[1,2] 王红光[1] 刘志连[1] 李东晓[1] 何明琦[2] 李瑞奇[1] Fu Xiaoyi;Wang Hongguang;Liu Zhilian;Li Dongxiao;He Mingqi;Li Ruiqi(College of Agronomy,Hebei Agricultural University,Baoding 071000,Hebei,China;Shijiazhuang Academy of Agricultural and Forestry Sciences,Shijiazhuang 050041,Hebei,China)

机构地区：[1]河北农业大学农学院,河北保定071000 [2]石家庄市农林科学研究院,河北石家庄050041

出　　处：《作物杂志》2023年第4期224-229,共6页Crops

基　　金：石家庄市科技发展计划(211490092A);河北省重点研发计划(21326318D-1);国家重点研发计划(2017YFD03009)。

摘　　要：为探究小麦品种苗期的抗旱性,以14个不同小麦品种为试验材料,研究了正常水分(对照)和水分胁迫(15%PEG6000)条件下株高、最大根长、根条数、总根长、根系总表面积、根体积和干物质积累的差异。结果表明,水分胁迫下各品种株高、平均根长、最大根长和平均根条数以及干物质积累均受到严重抑制,处理和品种间差异显著。济麦22在对照处理下平均根长最大,其次是石麦22、衡0628和冀麦418;水分胁迫处理下,石麦22、石麦26和河农825平均根长较长,冀麦325最短。对照处理下冀麦418和石麦26最大根长较长,冀麦325最短;对照处理下石麦22的根条数最多,藳优5766最少。水分胁迫处理下石新828根条数最多,石麦26次之,藳优2018最少。石麦26和冀麦418的根系总体积和干物质积累在2个处理下表现一致,均与其他品种差异显著,表明冀麦418和石麦26属于苗期抗旱性强的小麦品种。In order to explore the drought resistance of wheat in seedling period,using 14 different wheat varieties as materials,the differences of plant height,the maximum root length,root number,the total root length,total root surface area,root volume,and dry matter accumulation under normal water(CK)and drought stress(15%PEG 6000)treatments were studied.The results showed that under drought stress,plant height,average root length,maximum root length,average root number and dry matter accumulation among different varieties were seriously inhibited,there were significant differences between treatments and varieties.The average root length of JM22 was the longest under the CK treatment,followed by SM22,H0628 and JM418.Under drought treatment,the average root length of SM22,SM26 and HN825 were longer,and that of JM325 was the shortest.Under the CK treatment,JM418 and SM26 had longer root length,JM325 had the minimum root length;SM22 had the most number of roots under the CK treatment,GY5766 had the least root number.Under drought treatment,SX828 had the most root number,SM26 was the second,and GY2018 was the least.Under the two treatments,SM26 and JM418 had the same trend in the total root volume and dry matter accumulation,which were significantly different from other varieties.These results showed that JM418 and SM26 were the varieties with strong drought resistance at seedling stage.

关 键 词：小麦 幼苗 水分胁迫 抗旱品种 筛选 

分 类 号：S512.1[农业科学—作物学]