水分亏缺条件下褪黑素对春小麦光合特性及产量性状的影响

doi:10.12190/j.issn.2096-1197.2021.02.04

北方农业学报 ›› 2021, Vol. 49 ›› Issue (2): 24-30.doi: 10.12190/j.issn.2096-1197.2021.02.04

水分亏缺条件下褪黑素对春小麦光合特性及产量性状的影响

叶君^1,2, 于美玲², 曹梦龙³, 崔国惠², 王小兵², 吴晓华², 张海斌², 赵轩微², 李元清², 李娟³, 路战远^1,2,3, 耿志勇⁴

1.河北农业大学,河北保定 071001;
2.内蒙古自治区农牧业科学院,内蒙古呼和浩特 010031;
3.内蒙古大学,内蒙古呼和浩特 010020;
4.奈曼旗新镇综合保障和技术推广中心,内蒙古新镇 028300

收稿日期:2021-02-18 出版日期:2021-04-20 发布日期:2021-06-21
通讯作者: 路战远（1964—）,男,研究员,博士,博士生导师,主要从事作物栽培与耕作及农业生态的研究工作。
作者简介:叶君（1980—）,男,助理研究员,博士,主要从事作物育种与栽培技术的研究工作。
基金资助:
内蒙古自治区自然科学基金面上项目（2017MS0312）; 内蒙古自治区“草原英才”工程领军人才; 河北省博士后科研高层次人才资助项目（B2018003017）; 国家自然科学基金项目（31860356）; 内蒙古科技成果转化项目（2060404）; 内蒙古自治区应用技术研究与开发资金项目（2019GG340）; 内蒙古大学大学生创新创业训练计划项目（201914337）

Effects of melatonin on photosynthetic characteristics and yield traits of spring wheat under water deficit

YE Jun^1,2, YU Meiling², CAO Menglong³, CUI Guohui², WANG Xiaobing², WU Xiaohua², ZHANG Haibin², ZHAO Xuanwei², LI Yuanqing², LI Juan³, LU Zhanyuan^1,2,3, GENG Zhiyong⁴

1. Agricultural University of Hebei,Baoding 071001,China;
2. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
3. Inner Mongolia University,Hohhot 010020,China;
4. Comprehensive Security and Technology Promotion Center of Xinzhen Town of Naiman Banner,Xinzhen 028300,China

Received:2021-02-18 Online:2021-04-20 Published:2021-06-21

摘要/Abstract

摘要： 【目的】明确水分亏缺条件下褪黑素处理对春小麦籽粒产量的调控机理。【方法】以内蒙古春小麦水地主栽品种农麦2号与永良4号为试验材料,采用完全随机区组设计,在正常灌水与水分亏缺处理下,研究外源褪黑素对春小麦叶绿素含量、光合速率、单株生物量、穗数、穗粒数、千粒重、籽粒产量等主要表型性状的影响。【结果】与正常灌水处理相比,水分亏缺处理降低了春小麦功能叶片叶绿素含量和光合速率,阻碍了植株生物量的积累,降低了穗数、穗粒数和千粒重,导致减产19.01%~20.35%。水分亏缺条件下,褪黑素处理可以缓解水分亏缺对叶片造成的伤害,维持较高的叶绿素含量与光合速率,促进了植株生物量的积累,抑制了穗数、穗粒数和千粒重的降低,较增产13.19%~17.27%。【结论】褪黑素作为一种绿色生长调节剂对增强春小麦适应能力、应对水分亏缺频繁发生具有重要作用。

关键词: 水分亏缺, 褪黑素, 春小麦, 光合特性, 籽粒产量

Abstract: 【Objective】To clarify the regulating effect of melatonin treatment on spring wheat yield under water deficit conditions.【Methods】In the experiment,the spring wheat irrigated varieties Nongmai2 and Yongliang4 were used as test materials. Using randomized complete block design,the effects of exogenous melatonin on the main phenotypic traits of spring wheat,such as chlorophyll content,photosynthetic rate,biomass per plant,spike number,grain number per spike,thousand kernel weight and grain yield,were studied under well-watered and water deficit treatments.【Results】Compared with well-watered treatment,water deficit treatment reduced the chlorophyll content and photosynthetic rate of functional leaves of spring wheat,hindered the accumulation of biomass per plant,reduced spike number,grain number per spike,and thousand kernel weight,reduced yield by 19.01%-20.35%. Under water deficit conditions,melatonin treatment could alleviate the damage to leaves caused by water deficit,maintain high chlorophyll content and photosynthetic rate,promote the accumulation of biomass per plant,inhibit the decrease of spike number,grain number per spike and thousand kernel weight,and increase yield by 13.19%-17.27%.【Conclusion】As a green growth regulator,melatonin played an important role in enhancing the adaptability of spring wheat and coping with frequent water deficit.

Key words: Water deficit, Melatonin, Spring wheat, Photosynthetic characteristics, Grain yield

中图分类号:

S512

叶君, 于美玲, 曹梦龙, 崔国惠, 王小兵, 吴晓华, 张海斌, 赵轩微, 李元清, 李娟, 路战远, 耿志勇. 水分亏缺条件下褪黑素对春小麦光合特性及产量性状的影响[J]. 北方农业学报, 2021, 49(2): 24-30.

YE Jun, YU Meiling, CAO Menglong, CUI Guohui, WANG Xiaobing, WU Xiaohua, ZHANG Haibin, ZHAO Xuanwei, LI Yuanqing, LI Juan, LU Zhanyuan, GENG Zhiyong. Effects of melatonin on photosynthetic characteristics and yield traits of spring wheat under water deficit[J]. Journal of Northern Agriculture, 2021, 49(2): 24-30.

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水分亏缺条件下褪黑素对春小麦光合特性及产量性状的影响

Effects of melatonin on photosynthetic characteristics and yield traits of spring wheat under water deficit

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