ArticlePlants (Basel, Switzerland)2022
Phenotypic Differences and Physiological Responses of Salt Resistance of Walnut with Four Rootstock Types.
Article in Plants (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 28 citations in OpenAlex.
- Insights into physiological, biochemical and molecular mechanisms of abiotic stress tolerance in Persian walnut (Juglans regia L.).Protoplasma · 2026Review
- Responses of Processing Tomato Genotypes Under Varying NaCl Stress Levels and Durations.Plants (Basel, Switzerland) · 2026Article
- Integrative Evaluation of Salt Tolerance in Cherry Rootstocks Using Phenotypic and Biochemical Markers.Plants (Basel, Switzerland) · 2026Article
- Response ofBiology · 2025Article
- Silicon-induced mitigation of salt stress in GF677 and GN15 rootstocks: insights into physiological, biochemical, and molecular mechanisms.BMC plant biology · 2025Article
- Comparative physiological and co-expression network analysis reveals potential hub genes and adaptive mechanisms responsive to NaCl stress in peanut (Arachis hypogaea L.).BMC plant biology · 2025Article
- Effect of Persistent Salt Stress on the Physiology and Anatomy of Hybrid Walnut (Plants (Basel, Switzerland) · 2024Article
- Genome-wide identification analysis of the 4-Coumarate: CoA ligase (4CL) gene family expression profiles in Juglans regia and its wild relatives J. Mandshurica resistance and salt stress.BMC plant biology · 2024Article
- Provenance and family variations in early growth of Manchurian walnut (Juglans mandshurica Maxim.) and selection of superior families.PloS one · 2024Article
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8 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Walnut is one of the world’s four largest nuts. Currently, the bottleneck in walnut breeding is the production of resistant variants. Soil salinization is a global problem, and the use of salt-tolerant rootstocks is a basic strategy to overcome the challenge of sustained walnut production. Providing a scientific basis for the selection of walnut salt-tolerant rootstocks is possible by studying the physiological and biochemical response characteristics and salt tolerance variations of different walnut genotypes under salt stress. In the present study, seedlings of four genotypes of walnut rootstocks, including J1 (Juglans hindsii), J2 (J. mandshurica), J3 (J. regia × J. mandshurica), and J4 (J. regia × J. hindsii), were employed as test materials to conduct a 28-day pot experiment under NaCl stress with five NaCl concentrations (0, 50, 100, 200, and 300 mmol/L). Under different NaCl treatment concentrations, seedling morphology, growth indices, chlorophyll content, photosynthetic parameters, relative electrical conductivity (REC), malondialdehyde (MDA), proline (Pro), soluble sugar (SS), and the activity of superoxide dismutase (SOD) and peroxidase (POD) in the leaves were examined. Salt stress altered the morphological characteristics and growth indices of seedlings from four genotypes to varying degrees. In addition, according to the analysis of physiological and biochemical data, salt stress had a considerable impact on both the physiological and biochemical processes of seedlings. Salt stress decreased the chlorophyll content and photosynthetic parameters of four genotypes, the REC, MDA content, Pro content, and SS content of each genotype increased by different degrees, and the enzymatic activities showed different trends. The salt tolerance of rootstocks was evaluated thoroughly using principal component analysis and membership function analysis based on the 16 parameters. The results of a comprehensive evaluation of salt tolerance showed that the order of salt tolerance of the four genotypes was J4 > J1 > J3 > J2, which corresponded to the order of the morphological symptoms of salt injury. In conclusion, J4 has strong salt tolerance and is an important germplasm resource for walnut salt-tolerant rootstock breeding.
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