新疆农业科学 ›› 2024, Vol. 61 ›› Issue (2): 336-344.DOI: 10.6048/j.issn.1001-4330.2024.02.009
收稿日期:
2023-06-17
出版日期:
2024-02-20
发布日期:
2024-03-19
通信作者:
杨茹薇(1984-),女,宁夏人,正高级农艺师,研究方向为植物保护与高产栽培, (E-mail)作者简介:
刘易(1983-),男,河北人,副研究员,硕士,研究方向为马铃薯高产栽培及抗逆生理,(E-mail)liuyun_5511@163.com
基金资助:
LIU Yi(), LI Jiangtao, JIANG Yinghong, YANG Ruwei(), SUN Hui, WU Yan
Received:
2023-06-17
Online:
2024-02-20
Published:
2024-03-19
Correspondence author:
YANG Ruwei (1984-), female, from Ningxia, senior agronomist, research direction in Plant Protection and High Yield Cultivation, (E-mail)Supported by:
摘要:
【目的】研究NaCl胁迫下外源亚精胺(Spd)对马铃薯幼苗生理特征的影响,为新疆盐渍化区域马铃薯种植提供技术参考。【方法】以晋薯16号马铃薯幼苗为材料,采用不同浓度NaCl模拟盐胁迫处理,研究外源亚精胺Spd对马铃薯植株生长、叶片抗氧化酶活性、渗透调节物质含量的影响。【结果】盐胁迫抑制了马铃薯植株生长,使得超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)等酶促类抗氧化酶活性表现为低盐胁迫促进,高盐胁迫抑制;抗坏血酸(ASA)、谷胱甘肽(DSH)等非酶促类抗氧化酶含量均降低;脯氨酸、可溶性糖、氨基酸含量升高;外源亚精胺(Spd)通过提高叶绿素含量、根系活力,调节渗透调节物质含量,增强抗氧化酶活性等方式维持植物体的正常生理代谢功能。【结论】外源亚精胺(Spd)可提升马铃薯耐盐性,缓解盐胁迫对马铃薯植株的抑制作用,其中0.9 mmol/L Spd(S3)浓度缓解效果最明显。
中图分类号:
刘易, 李江涛, 江应红, 杨茹薇, 孙慧, 吴燕. NaCl胁迫下外源亚精胺对马铃薯幼苗生理特征的影响[J]. 新疆农业科学, 2024, 61(2): 336-344.
LIU Yi, LI Jiangtao, JIANG Yinghong, YANG Ruwei, SUN Hui, WU Yan. Effect of exogenous spermidine on physiological characteristics of potato seedlings under NaCl stress[J]. Xinjiang Agricultural Sciences, 2024, 61(2): 336-344.
盐处理 NaCl treatment (mmol/L) | Spd处理 Spd treatment (mmol/L) | 株高 Plant height (cm) | 茎粗 Stem diameter (mm) | 鲜重(g/株) Fresh weight (g/plant) | 干重(g/株) Dry weight (g/plant) |
---|---|---|---|---|---|
T0 | S0 | 8.86±0.36 a | 1.41±0.04 a | 1.02±0.05 a | 0.087±0.002 b |
S1 | 8.55±0.39 a | 1.41±0.02 a | 1.00±0.03 a | 0.09±0.002 ab | |
S2 | 9.09±0.42 a | 1.35±0.07 a | 1.02±0.03 a | 0.088±0.002 b | |
S3 | 9.32±0.37 a | 1.37±0.04 a | 1.06±0.02 a | 0.09±0.007 a | |
S4 | 8.59±0.39 a | 1.39±0.02 a | 1.02±0.03 a | 0.088±0.006 ab | |
T1 | S0 | 7.29±0.26 c | 1.38±0.01 a | 0.89±0.01 bc | 0.075±0.005 ab |
S1 | 7.15±0.10 c | 1.35±0.03 ab | 0.87±0.02 c | 0.074±0.001 b | |
S2 | 8.31±0.24 b | 1.30±0.05 b | 0.89±0.03 bc | 0.076±0.003 ab | |
S3 | 9.14±0.11 a | 1.34±0.02 ab | 0.96±0.03 a | 0.086±0.002 a | |
S4 | 8.09±0.31 b | 1.30±0.05 b | 0.91±0.01 b | 0.083±0.003 ab | |
T2 | S0 | 6.86±0.32 b | 1.29±0.01 b | 0.84±0.03 b | 0.065±0.002 b |
S1 | 6.93±0.21 b | 1.28±0.01 b | 0.86±0.01 b | 0.074±0.002 ab | |
S2 | 7.82±0.19 a | 1.29±0.01 b | 0.87±0.01 b | 0.081±0.003 ab | |
S3 | 7.84±0.17 a | 1.33±0.01 a | 0.95±0.01 a | 0.089±0.006 a | |
S4 | 7.46±0.35 a | 1.26±0.03 b | 0.93±0.01 a | 0.085±0.001 ab | |
T3 | S0 | 6.01±0.40 b | 1.25±0.00 bc | 0.6±0.01 b | 0.059±0.005 b |
S1 | 6.24±0.19 ab | 1.24±0.03 bc | 0.66±0.03 ab | 0.077±0.002 a | |
S2 | 6.55±0.32 ab | 1.21±0.02 c | 0.69±0.03 a | 0.076±0.001 ab | |
S3 | 6.79±0.26 a | 1.31±0.04 a | 0.69±0.04 a | 0.079±0.003 a | |
S4 | 6.34±0.19 ab | 1.28±0.01 ab | 0.68±0.01 a | 0.078±0.002 a |
表1 盐胁迫下喷施外源亚精胺马铃薯幼苗生长变化
Tab.1 Effects of exogenous spermidine on potato seedling growth under salt stress
盐处理 NaCl treatment (mmol/L) | Spd处理 Spd treatment (mmol/L) | 株高 Plant height (cm) | 茎粗 Stem diameter (mm) | 鲜重(g/株) Fresh weight (g/plant) | 干重(g/株) Dry weight (g/plant) |
---|---|---|---|---|---|
T0 | S0 | 8.86±0.36 a | 1.41±0.04 a | 1.02±0.05 a | 0.087±0.002 b |
S1 | 8.55±0.39 a | 1.41±0.02 a | 1.00±0.03 a | 0.09±0.002 ab | |
S2 | 9.09±0.42 a | 1.35±0.07 a | 1.02±0.03 a | 0.088±0.002 b | |
S3 | 9.32±0.37 a | 1.37±0.04 a | 1.06±0.02 a | 0.09±0.007 a | |
S4 | 8.59±0.39 a | 1.39±0.02 a | 1.02±0.03 a | 0.088±0.006 ab | |
T1 | S0 | 7.29±0.26 c | 1.38±0.01 a | 0.89±0.01 bc | 0.075±0.005 ab |
S1 | 7.15±0.10 c | 1.35±0.03 ab | 0.87±0.02 c | 0.074±0.001 b | |
S2 | 8.31±0.24 b | 1.30±0.05 b | 0.89±0.03 bc | 0.076±0.003 ab | |
S3 | 9.14±0.11 a | 1.34±0.02 ab | 0.96±0.03 a | 0.086±0.002 a | |
S4 | 8.09±0.31 b | 1.30±0.05 b | 0.91±0.01 b | 0.083±0.003 ab | |
T2 | S0 | 6.86±0.32 b | 1.29±0.01 b | 0.84±0.03 b | 0.065±0.002 b |
S1 | 6.93±0.21 b | 1.28±0.01 b | 0.86±0.01 b | 0.074±0.002 ab | |
S2 | 7.82±0.19 a | 1.29±0.01 b | 0.87±0.01 b | 0.081±0.003 ab | |
S3 | 7.84±0.17 a | 1.33±0.01 a | 0.95±0.01 a | 0.089±0.006 a | |
S4 | 7.46±0.35 a | 1.26±0.03 b | 0.93±0.01 a | 0.085±0.001 ab | |
T3 | S0 | 6.01±0.40 b | 1.25±0.00 bc | 0.6±0.01 b | 0.059±0.005 b |
S1 | 6.24±0.19 ab | 1.24±0.03 bc | 0.66±0.03 ab | 0.077±0.002 a | |
S2 | 6.55±0.32 ab | 1.21±0.02 c | 0.69±0.03 a | 0.076±0.001 ab | |
S3 | 6.79±0.26 a | 1.31±0.04 a | 0.69±0.04 a | 0.079±0.003 a | |
S4 | 6.34±0.19 ab | 1.28±0.01 ab | 0.68±0.01 a | 0.078±0.002 a |
图2 盐胁迫下喷施外源亚精胺马铃薯幼苗酶促类抗氧化物酶活性变化
Fig.2 Effects of exogenous spermidine on enzymatic antioxidant enzyme activities in potato seedlings under salt stress
图3 盐胁迫下喷施外源亚精胺马铃薯幼苗非酶促类抗氧化物酶活性变化
Fig.3 Effects of exogenous spermidine on the activities of non-enzymatic antioxidant enzymes in potato seedlings under salt stress
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