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1.陕西省林业科学院, 陕西 西安 710082
2.榆阳区林业和种苗工作站,陕西 榆林 719000
3.陕西省榆林市沙生植物国家林木种质资源库, 陕西 榆林;719000
4.陕西榆林毛乌素沙地荒漠生态系统定位观测研究站, 陕西 榆林 719000
Received:25 March 2025,
Revised:2025-06-13,
Published:10 October 2025
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李荣, 张艳, 曹庆喜, 等.不同种源长柄扁桃种子萌发期耐旱及耐盐性[J].水土保持通报,2025,45(5):111-123.
Li Rong, Zhang Yan, Cao Qingxi, et al. Drought and salt tolerance during seed germination of different provenances of Amygdalus pedunculata [J]. Bulletin of Soil and Water Conservation,2025,45(5):111-123.
李荣, 张艳, 曹庆喜, 等.不同种源长柄扁桃种子萌发期耐旱及耐盐性[J].水土保持通报,2025,45(5):111-123. DOI: 10.13961/j.cnki.stbctb.2025.05.018. CSTR: 32312.14.stbctb.2025.05.018..
Li Rong, Zhang Yan, Cao Qingxi, et al. Drought and salt tolerance during seed germination of different provenances of Amygdalus pedunculata [J]. Bulletin of Soil and Water Conservation,2025,45(5):111-123. DOI: 10.13961/j.cnki.stbctb.2025.05.018. CSTR: 32312.14.stbctb.2025.05.018..
目的
2
探究长柄扁桃(
Amygdalus pedunculata
)种子萌发期抗逆性,揭示不同种源长柄扁桃种子性状之间的差异及其萌发特性间的差异,为筛选长柄扁桃优良种源及其在干旱和盐碱地区的合理引种及生态修复提供理论指导。
方法
2
以榆林市榆阳区小纪汗乡(XJH)、榆林市神木市锦界镇(JJZ)、包头市固阳县金山镇(JSZ)、锡林郭勒盟苏尼特右旗赛汉塔拉镇(SHT)4个种源长柄扁桃种子为试验材料,使用聚乙二醇(PEG-6000)和NaCl分别模拟干旱胁迫和盐胁迫,探究萌发期内的变化,并采用主成分分析法(PCA)和隶属函数法对种子抗逆性进行综合评价。
结果
2
4个种源长柄扁桃种子在耐旱性和耐盐性上有显著差异,其分别表现为:SHT>XJH>JJZ>JSZ和XJH>JJZ>SHT>JSZ,其中SHT种源的耐旱性综合评价指数为90.12,XJH种源的耐盐性综合评价指数为89.51。
结论
2
SHT种源更抗旱,JJZ种源更耐盐,不同种源的长柄扁桃种子对胁迫的耐受性存在差异性。
Objective
2
The stress tolerance of
Amygdalus pedunculata
seeds during germination were investigated, and the differences in seed traits and germination characteristics among different provenances were analyzed, in order to provide theoretical guidance for selecting superior
A.
pedunculata
provenances and their rational introduction and ecological restoration in arid and saline-alkali areas.
Methods
2
Seeds from four provenances of
A. pedunculata
were used as experimental materials: Xiaojihan Township(XJH), Yuyang District, Yulin City; Jinjie Town(JJZ), Shenmu City, Yulin City; Jinshan Town(JSZ), Guyang County, Baotou City; and Saihantala Town(SHT), Sonid Right Banner, Xilin Gol League. Polyethylene glycol (PEG-6000) and NaCl were used to simulate drought stress and salt stress, respectively. Changes during the germination period were investigated. Principal component analysis (PCA) and the membership function method were employed for a comprehensive evaluation of seed stress tolerance.
Results
2
There were significant differences in drought tolerance and salt tolerance among the four
A. pedunculata
provenances, respectively ranked as SHT
>
XJH
>
JJZ
>
JSZ and XJH
>
JJZ
>
SHT
>
JSZ. The comprehensive evaluation index of drought tolerance was 90.12 for SHT provenance, while the index for salt tolerance was 89.51 for XJH provenance.
Conclusion
2
The SHT provenance is more drought-resistant and the JJZ provenance is more salt-resistant, revealing that seed stress tolerance varies among different
A. pedunculata
provenances.
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