新疆农业科学 ›› 2024, Vol. 61 ›› Issue (2): 393-401.DOI: 10.6048/j.issn.1001-4330.2024.02.015
欧源1,2(), 罗莎莎1,2, 王如月1,2, 孙雅丽3, 虎海防4()
收稿日期:
2023-06-22
出版日期:
2024-02-20
发布日期:
2024-03-19
通信作者:
虎海防(1975-),男,新疆乌鲁木齐人,研究员,博士,研究方向为经济林选育与栽培,(E-mail)作者简介:
欧源(1989-),男,重庆人,硕士研究生,研究方向为森林培育技术与应用,(E-mail)376908921@qq.com
基金资助:
OU Yuan1,2(), LUO Shasha1,2, WANG Ruyue1,2, SUN Yali3, HU Haifang4()
Received:
2023-06-22
Online:
2024-02-20
Published:
2024-03-19
Correspondence author:
HU Haifang(1975-),male,from Urumqi Xinjiang,the main research direction is fruit tree germplasm resources and cultivation physiology,(E-mail)Supported by:
摘要:
【目的】研究美国黑核桃(以下简称黑核桃)在盐胁迫下幼苗生长和生理特性变化规律,综合分析不同黑核桃幼苗的耐盐性,为选育黑核桃耐盐品种、抗盐性机制及其在新疆核桃种植区耐盐性砧木的筛选提供参考依据。【方法】以黑核桃品种小果黑核桃(Juglans regia.microcarpa)、北加州黑核桃(Juglans regia.hindsii)、东部黑核桃(Juglans regia.nigra)和魁核桃(Juglans regia.major)实生苗为材料,分析4种黑核桃幼苗在不同NaCl浓度胁迫下地上干重、地下干重、主根长、侧根数、MDA含量等9项生长指标和生理响应,采用相关性分析、隶属函数分析法综合评价幼苗耐盐性。【结果】在盐胁迫下,4种黑核桃幼苗生长均受到抑制,盐胁迫40 d后,地上干重、地下干重、主根长和侧根数均有不同程度的下降,不同材料的变化幅度不同;随着盐浓度增加,丙二醛含量上升,SOD活性、POD活性、脯氨酸含量和可溶性糖含量总体呈先增加后降低的趋势。【结论】4种黑核桃耐盐能力由强至弱为东部黑核桃>小果黑核桃>魁核桃>北加州黑核桃。
中图分类号:
欧源, 罗莎莎, 王如月, 孙雅丽, 虎海防. 盐胁迫对美国黑核桃幼苗生长和生理特性的影响[J]. 新疆农业科学, 2024, 61(2): 393-401.
OU Yuan, LUO Shasha, WANG Ruyue, SUN Yali, HU Haifang. Effects of salt stress on the growth and physiological characteristics of american black walnut seedlings[J]. Xinjiang Agricultural Sciences, 2024, 61(2): 393-401.
指标 Indicators | MDA | SOD | POD | Pro | 可溶性糖 Soluble sugars | 地上干重 Dry weight on the ground | 地下干重 Underground dry weight | 主根长 Main root length | 侧根数 Number of lateral roots |
---|---|---|---|---|---|---|---|---|---|
MDA | 1.000 | ||||||||
SOD | -0.275 | 1.000 | |||||||
POD | -0.331 | 0.851** | 1.000 | ||||||
Pro | -0.239 | 0.946** | 0.865** | 1.000 | |||||
可溶性糖 Soluble sugars | -0.330 | 0.816** | 0.671** | 0.832** | 1.000 | ||||
地上干重 Dry weight on the ground | -0.585** | 0.625** | 0.541* | 0.527* | 0.532* | 1.000 | |||
地下干重 Underground dry weight | -0.258 | 0.066 | 0.176 | 0.116 | 0.214 | 0.262 | 1.000 | ||
主根长 Main root length | -0.450* | 0.581** | 0.571** | 0.595** | 0.591** | 0.443 | -0.016 | 1.000 | |
侧根数 Number of lateral roots | -0.794** | 0.402 | 0.485* | 0.376 | 0.463* | 0.361 | 0.356 | 0.571** | 1.000 |
表1 4种黑核桃指标相关性矩阵
Tab.1 Correlation matrix of indicators for the four black walnut species
指标 Indicators | MDA | SOD | POD | Pro | 可溶性糖 Soluble sugars | 地上干重 Dry weight on the ground | 地下干重 Underground dry weight | 主根长 Main root length | 侧根数 Number of lateral roots |
---|---|---|---|---|---|---|---|---|---|
MDA | 1.000 | ||||||||
SOD | -0.275 | 1.000 | |||||||
POD | -0.331 | 0.851** | 1.000 | ||||||
Pro | -0.239 | 0.946** | 0.865** | 1.000 | |||||
可溶性糖 Soluble sugars | -0.330 | 0.816** | 0.671** | 0.832** | 1.000 | ||||
地上干重 Dry weight on the ground | -0.585** | 0.625** | 0.541* | 0.527* | 0.532* | 1.000 | |||
地下干重 Underground dry weight | -0.258 | 0.066 | 0.176 | 0.116 | 0.214 | 0.262 | 1.000 | ||
主根长 Main root length | -0.450* | 0.581** | 0.571** | 0.595** | 0.591** | 0.443 | -0.016 | 1.000 | |
侧根数 Number of lateral roots | -0.794** | 0.402 | 0.485* | 0.376 | 0.463* | 0.361 | 0.356 | 0.571** | 1.000 |
品种 Variety | MDA | SOD | POD | Pro | 可溶性糖 Soluble sugars | 地上 干重 Dry weight on the ground | 地下 干重 Undergr- ound dry weight | 主根长 Main root length | 侧根数 Number of lateral roots | 隶属 均值 Subordinate mean | 排序 Ranking |
---|---|---|---|---|---|---|---|---|---|---|---|
小果黑核桃 Small-fruited black walnut | 0.43 | 0.73 | 0.62 | 0.60 | 0.59 | 0.6 | 0.38 | 0.87 | 0.50 | 0.59 | 2 |
北加州黑核桃 Northern California black walnut | 0.59 | 0.57 | 0.49 | 0.53 | 0.52 | 0.59 | 0.60 | 0.50 | 0.30 | 0.52 | 4 |
东部黑核桃 Eastern black walnut | 0.59 | 0.74 | 0.84 | 0.67 | 0.61 | 0.53 | 0.49 | 0.78 | 0.59 | 0.65 | 1 |
魁核桃 Quebracho black walnut | 0.66 | 0.58 | 0.49 | 0.56 | 0.71 | 0.30 | 0.44 | 0.72 | 0.45 | 0.54 | 3 |
表2 4种黑核桃耐盐指标隶属函数值及排序
Tab.2 Affiliation function values and ranking of salt tolerance indicators for four black walnut variety
品种 Variety | MDA | SOD | POD | Pro | 可溶性糖 Soluble sugars | 地上 干重 Dry weight on the ground | 地下 干重 Undergr- ound dry weight | 主根长 Main root length | 侧根数 Number of lateral roots | 隶属 均值 Subordinate mean | 排序 Ranking |
---|---|---|---|---|---|---|---|---|---|---|---|
小果黑核桃 Small-fruited black walnut | 0.43 | 0.73 | 0.62 | 0.60 | 0.59 | 0.6 | 0.38 | 0.87 | 0.50 | 0.59 | 2 |
北加州黑核桃 Northern California black walnut | 0.59 | 0.57 | 0.49 | 0.53 | 0.52 | 0.59 | 0.60 | 0.50 | 0.30 | 0.52 | 4 |
东部黑核桃 Eastern black walnut | 0.59 | 0.74 | 0.84 | 0.67 | 0.61 | 0.53 | 0.49 | 0.78 | 0.59 | 0.65 | 1 |
魁核桃 Quebracho black walnut | 0.66 | 0.58 | 0.49 | 0.56 | 0.71 | 0.30 | 0.44 | 0.72 | 0.45 | 0.54 | 3 |
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