|本期目录/Table of Contents|

[1]曹宇航,潘宇,徐洪伟,等.绿色木霉对干旱胁迫玉米幼苗光合及叶绿素荧光特性的影响[J].江苏农业科学,2024,52(11):67-73.
 Cao Yuhang,et al.Effects of Trichoderma viride on photosynthesis and chlorophyll fluorescence characteristics of maize seedlings under drought stress[J].Jiangsu Agricultural Sciences,2024,52(11):67-73.
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绿色木霉对干旱胁迫玉米幼苗光合及叶绿素荧光特性的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第52卷
期数:
2024年第11期
页码:
67-73
栏目:
遗传育种与耕作栽培
出版日期:
2024-06-05

文章信息/Info

Title:
Effects of Trichoderma viride on photosynthesis and chlorophyll fluorescence characteristics of maize seedlings under drought stress
作者:
曹宇航1潘宇2徐洪伟1周晓馥1
1.吉林师范大学吉林省植物资源科学与绿色生产重点实验室,吉林四平136000; 2.吉林省土壤肥料总站,吉林长春130000
Author(s):
Cao Yuhanget al
关键词:
干旱胁迫绿色木霉玉米叶绿素含量叶绿素荧光特性
Keywords:
-
分类号:
S513.01
DOI:
-
文献标志码:
A
摘要:
为探究绿色木霉(Trichoderma viride)对干旱胁迫玉米幼苗光合及叶绿素荧光特性的影响。以玉米品种稷秾107号为试验材料,采用室内盆栽试验法,于玉米4叶1心期绿色木霉灌根处理,共设4个处理:清水(CK)、干旱(DSCK)、正常水分条件接种绿色木霉(TK)、干旱胁迫下接种绿色木霉(DSTK),研究对幼苗地上部形态及光合特性的影响。TK与 CK处理组相比,玉米幼苗的地上部株高、茎粗、叶宽、叶面积均显著增加(P<0.05),玉米幼苗的净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、胞间CO2浓度(Ci)和水分利用效率(WUE)均差异显著(P<0.05)。干旱胁迫下接种绿色木霉处理(DSTK)与 DSCK相比,玉米幼苗的株高、茎粗、叶宽、叶面积、净光合速率、蒸腾速率、气孔导度、胞间CO2浓度、水分利用效率均显著提高(P<0.05);分别增加4396%、168.91%、96.32%、168.21%、91.56%、138.46%、158.68%、141.16%、66.41%。DSTK组玉米幼苗叶片最大光化学效率(Fv/Fm)、光化学淬灭系数(qP)、光合电子传递速率(ETR)也显著高于DSCK组(P<0.05),而非光化学淬灭系数(NPQ)降低了22.55%(P<0.05);玉米叶片色素含量的增幅表现一致,菌液处理的幼苗总叶绿素、叶绿素a、叶绿素b含量显著高于CK处理组(P<0.05)。相关性分析表明,玉米幼苗叶片的地上形态学指标与光合特性各参数呈显著正相关。而非光化学猝灭系数与形态学指标、叶绿素含量、气体交换参数呈显著负相关。绿色木霉能够促进玉米幼苗生长,且提高玉米幼苗的光合特性,从而提高玉米的抗旱能力。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2023-07-13
基金项目:国家自然科学基金(编号:31070224);吉林省科技发展计划(编号:20210202017NC)。
作者简介:曹宇航(1998—),男,安徽池州人,硕士研究生,主要从事植物遗传学研究。E-mail:cyh980312@163.com。
通信作者:周晓馥,博士,教授,主要从事植物分子生物学研究。E-mail:zhouxiaofu@jlnu.edu.cn。
更新日期/Last Update: 2024-06-05