中国农业气象 ›› 2014, Vol. 35 ›› Issue (02): 162-167.doi: 10.3969/j.issn.1000-6362.2014.02.007

• 论文 • 上一篇    下一篇

水杨酸和α-萘乙酸浸种对冬小麦幼苗抗旱性的影响

唐晓川,张元成,钟秀丽,白文波,吕国华,宋吉青   

  1. 1中国农业科学院农业环境与可持续发展研究所/作物高效用水与抗灾减损国家工程实验室/农业部农业环境重点实验室,北京100081;2胜利油田长安集团山东宝力生物质能源股份有限公司,东营257097
  • 收稿日期:2013-08-14 出版日期:2014-04-20 发布日期:2015-02-11
  • 作者简介:唐晓川(1988-),河北邯郸人,硕士生,主要研究方向为作物逆境生理与农业减灾。Email:tangxc123@126.com;张元成:并列第一作者。
  • 基金资助:

    公益性行业(农业)科研专项(201203031-02);“十二五”国家高技术研究发展计划(863计划)项目(2011AA100503);中国农业科学院科技创新工程

Effect of Seed Soaking With Salicylic Acid and α-Naphthaleneacetic Acid on Drought Resistance of Winter Wheat

TANG Xiaochuan,ZHANG Yuancheng,ZHONG Xiuli,BAI Wenbo,LV Guohua,SONG Jiqing   

  1. 1Institute of Environment and Sustainable Development in Agriculture,CAAS /State Key Engineering Laboratory of Crops Efficient Water Use and Drought Mitigation/Key Laboratory of Agricultural Environment,MOA,Beijing100081,China;2Shengli Oilfield Chang’an Group,Shandong Bori Bioenergy Co,Ltd,Dongying257097
  • Received:2013-08-14 Online:2014-04-20 Published:2015-02-11

摘要: 以冬小麦品种矮抗58为材料,设蒸馏水(CK)、水杨酸(SA)、α-萘乙酸(NAA)及水杨酸和α-萘乙酸复配(SA+NAA)4个浸种处理,通过观测冬小麦幼苗生长状况和生理特性指标,研究水杨酸(SA)和α-萘乙酸(NAA)对冬小麦幼苗的影响。试验在培养皿中进行,除空白对照组全程采用蒸馏水培养外,其它处理组先在蒸馏水中培养5d使种子完成发芽并积累一定的生物量,再转入15% PEG中胁迫培养4d,以模拟种子发芽后遭遇的干旱环境。结果表明,蒸馏水培养条件下,SA(0.5mmol/L)可促进幼苗的生长而NAA(20mg/kg)能提高幼苗的根冠比,二者共同作用表现出复配优势;胁迫培养条件下,NAA和SA+NAA处理的幼苗能积累较多的生物量,SA和SA+NAA处理的幼苗能保持较高的含水量和较低的电解质渗漏率。作为浸种制剂,SA和NAA能提高幼苗根冠比和生物量积累速度,减少胁迫对幼苗的伤害,提升冬小麦的抗旱性,且两者的复配作用效果优于单独作用。

关键词: 水杨酸(SA), α-萘乙酸(NAA), 冬小麦, 植物生长调节剂, 抗旱性

Abstract: Effect of SA and NAA on the winter wheat(Aikang58) seedling were studied by comparing the growth and physiological characteristics of seedling in different treatment There were four treatments,namely soaked in distilled water(CK),salicylic acid(SA),α-naphthaleneacetic acid (NAA) and the mixture of salicylic acid and α-naphthaleneacetic acid (SA+NAA)The experiment was conducted in the petri dish Seeds of the contrast check were always cultured in distilled water while others were firstly cultured in distilled water for 5 days to accomplish germination and accumulate certain biomass and then in PEG solution (15%) for 4 days to simulate drought stress The results showed that under distilled water condition,SA (0.5mmol/L) could enhance seedling growth rate and NAA (20mg/kg) could increase root/shoot ratio of the wheat seedling SA+NAA showed advantages as a mixture Under osmotic stress condition,NAA and SA+NAA could increase the biomass of the wheat seedling,SA and SA+NAA could improve plant water status and decrease the electrolyte leakage.As seed soaking agent,SA and NAA could increase root/shoot ratio and the biomass of wheat seeding,alleviate the damage of osmotic stress and enhance the drought resistance of wheat seedlings. The effect of SA+NAA was better than SA or NAA separately

Key words: Salicylic acid(SA), α-Naphthaleneacetic acid(NAA), Winter wheat, Plant growth regulator, Drought resistance