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  1. AU="Pirnajmedin, Fatemeh"
  2. AU="Rebeyka, Ivan M"
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  4. AU="Yagi, Yoshitaka"
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  1. Article ; Online: Characterization, combining ability, and analysis of genetic inheritance of persistence and growth traits in tall fescue

    Pirnajmedin, Fatemeh / Majidi, Mohammad Mahdi / Taleb, Hadi / Mirmohammady Maibody, Sayed Ali Mohammad

    Crop Science. 2023 Mar., v. 63, no. 2 p.967-973

    2023  

    Abstract: Productivity and persistence in grasses are the results of a complex combination of many variables that affect plant growth all over the growing periods. The genetic variability and inheritance of seasonal productivity, persistence, and summer dormancy ... ...

    Abstract Productivity and persistence in grasses are the results of a complex combination of many variables that affect plant growth all over the growing periods. The genetic variability and inheritance of seasonal productivity, persistence, and summer dormancy and their associations are poorly understood in tall fescue. In this study, half‐sib (HS) families of tall fescue derived from polycrosses, along with their corresponding parental genotypes were assessed for agro‐morphological traits at three harvests, persistence, and summer dormancy in the field during 2016–2019. High genotypic variation was observed for all the measured traits in the evaluated germplasm. In both parental genotypes and HS families, summer cuts had the lowest values of forage mass than spring and autumn cuts during all years of experiment. Summer dormancy index was negatively correlated with forage production and yield‐related traits. Forage mass at three cuts, persistence, and summer dormancy had lower narrow‐sense heritability (h²PFM) than yield‐related traits, which indicates that these traits may control by small effects of many genes than yield‐related traits. Based on the general combining ability (GCA) and the biplot of principal component analysis (PCA), genotypes 21M and 1E with high forage production were identified as preferable genotypes for forage use, which can be used in other breeding programs. In contrast, genotypes 17M and 4E with low forage productivity and high level of summer dormancy may be suitable for turf application. However, further experiments are needed to assess turf‐related traits, root characteristics, survival and their association with summer dormancy in this germplasm. Preferable genotypes for forage use and turf application were identified for future programs.
    Keywords Festuca arundinacea ; autumn ; dormancy ; forage ; forage production ; genetic variation ; germplasm ; heritability ; inheritance (genetics) ; lawns and turf ; plant growth ; principal component analysis ; spring ; summer
    Language English
    Dates of publication 2023-03
    Size p. 967-973.
    Publishing place John Wiley & Sons, Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 410209-5
    ISSN 0011-183X
    ISSN 0011-183X
    DOI 10.1002/csc2.20859
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  2. Article ; Online: Genetic parameters and selection in full-sib families of tall fescue using best linear unbiased prediction (BLUP) analysis.

    Pirnajmedin, Fatemeh / Majidi, Mohammad Mahdi / Taleb, Mohammad Hadi / Rostami, Davoud

    BMC plant biology

    2022  Volume 22, Issue 1, Page(s) 293

    Abstract: Background: Better understanding of genetic structure of economic traits is crucial for identification and selection of superior genotypes in specific breeding programs. Best linear unbiased prediction (BLUP) is the most efficient method in this regard, ...

    Abstract Background: Better understanding of genetic structure of economic traits is crucial for identification and selection of superior genotypes in specific breeding programs. Best linear unbiased prediction (BLUP) is the most efficient method in this regard, which is poorly used in forage plant breeding. The present study aimed to assess genetic variation, estimate genetic parameters, and predict breeding values of five essential traits in full sib families (recognized by EST-SSR markers) of tall fescue using REML/BLUP procedure.
    Method: Forty-two full-sib families of tall fescue (included of 120 individual genotypes), recognized by EST-SSR markers along with twenty-one their corresponding parental genotypes were assessed for biomass production and agro-morphological traits at three harvests (spring, summer, and autumn) in the field during 4 years (2017-2020).
    Results: Considerable genotypic variability was observed for all traits. Low narrow-sense heritability (h
    Conclusion: Our results showed the adequacy of REML/BLUP procedure for identification and selection of preferable parental genotypes and progenies with higher breeding values for future breeding programs such as variety development in tall fescue. Parental genotypes 21 M, 1 M, and 20 L were identified as superior and stable genotypes and could also produce the best hybrid combinations when they were mostly used as maternal parent.
    MeSH term(s) Festuca/genetics ; Genotype ; Inheritance Patterns ; Lolium ; Models, Genetic ; Phenotype ; Plant Breeding ; Selection, Genetic
    Language English
    Publishing date 2022-06-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 2059868-3
    ISSN 1471-2229 ; 1471-2229
    ISSN (online) 1471-2229
    ISSN 1471-2229
    DOI 10.1186/s12870-022-03675-w
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  3. Article ; Online: Plant functional trait responses to cope with drought in seven cool-season grasses.

    Taleb, Mohammad Hadi / Majidi, Mohammad Mahdi / Pirnajmedin, Fatemeh / Maibody, Sayed Ali Mohammad Mirmohammady

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 5285

    Abstract: In semi-arid and arid regions, the selection of suitable grass species with high-yield production, tolerance to drought stress, and potential for recovery from drought is of special importance. Despite extensive research in cool-season grasses, inter- ... ...

    Abstract In semi-arid and arid regions, the selection of suitable grass species with high-yield production, tolerance to drought stress, and potential for recovery from drought is of special importance. Despite extensive research in cool-season grasses, inter-species differences in post-drought recovery, persistence, survival, and summer dormancy and their relationship with drought tolerance need more investigation. In the present study, 28 diverse genotypes belonged to seven cool-season grass species, including Festuca arundinacea (tall fescue), Festuca pratensis (meadow fescue), Festuca ovina (sheep fescue), Festuca rubra (red fescue), Lolium perenne (perennial ryegrass), Lolium multiflorum (Italian ryegrass) and Lolium × hybridum were evaluated during 2016-2019 under three irrigation regimes (normal, mild, and intense drought stress). Then in the fourth year (on August 2019), irrigation was withheld at all previous irrigation regimes for two months during summer, and then species were re-irrigated to study the effect of prolonged drought conditions. A wide range of genetic diversity was detected in all the measured traits among and within species in response to different irrigation levels. Recurrent drought stress decreased forage productivity, post-drought recovery, and survival in all grass species. Among the studied species, tall fescue had higher forage production, drought tolerance, survival, recovery rate, and persistence. Sheep fescue had low forage production and recovery after drought. Drought tolerance (based on stress tolerance score, STS) was highly associated with forage yield and post-drought recovery and partially with summer dormancy under both mild and intense drought stress conditions. This indicated that selection based on higher STS would lead to choosing genotypes with better recovery after prolonged drought. Superior species and preferable genotypes for forage use from species Festuca arundinacea and for turf application from species Festuca arundinacea, Lolium perenne and Lolium × hybridum were identified across different water environments for future programs.
    MeSH term(s) Animals ; Sheep ; Poaceae/genetics ; Droughts ; Seasons ; Lolium/genetics ; Plants ; Festuca/genetics
    Language English
    Publishing date 2023-03-31
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-31923-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Genetic parameters and selection in full-sib families of tall fescue using best linear unbiased prediction (BLUP) analysis

    Pirnajmedin, Fatemeh / Majidi, Mohammad Mahdi / Taleb, Mohammad Hadi / Rostami, Davoud

    BMC Plant Biol. 2022 Dec., v. 22, no. 1 p.293-293

    2022  

    Abstract: BACKGROUND: Better understanding of genetic structure of economic traits is crucial for identification and selection of superior genotypes in specific breeding programs. Best linear unbiased prediction (BLUP) is the most efficient method in this regard, ... ...

    Abstract BACKGROUND: Better understanding of genetic structure of economic traits is crucial for identification and selection of superior genotypes in specific breeding programs. Best linear unbiased prediction (BLUP) is the most efficient method in this regard, which is poorly used in forage plant breeding. The present study aimed to assess genetic variation, estimate genetic parameters, and predict breeding values of five essential traits in full sib families (recognized by EST-SSR markers) of tall fescue using REML/BLUP procedure. METHOD: Forty-two full-sib families of tall fescue (included of 120 individual genotypes), recognized by EST-SSR markers along with twenty-one their corresponding parental genotypes were assessed for biomass production and agro-morphological traits at three harvests (spring, summer, and autumn) in the field during 4 years (2017–2020). RESULTS: Considerable genotypic variability was observed for all traits. Low narrow-sense heritability (h²ₙ) for dry forage yield (DFY) at three harvest indicates that non-additive gene actions may play an important role in the inheritance of this trait. Higher h²ₙ of yield related traits and flowering time and also significant genetic correlation of these traits with forage yield, suggests that selection based on these traits may lead to indirect genetic improvement of DFY. CONCLUSION: Our results showed the adequacy of REML/BLUP procedure for identification and selection of preferable parental genotypes and progenies with higher breeding values for future breeding programs such as variety development in tall fescue. Parental genotypes 21 M, 1 M, and 20 L were identified as superior and stable genotypes and could also produce the best hybrid combinations when they were mostly used as maternal parent.
    Keywords Festuca arundinacea ; autumn ; biomass production ; forage ; forage yield ; genes ; genetic correlation ; genetic improvement ; genetic variation ; heritability ; hybrids ; prediction ; spring ; summer
    Language English
    Dates of publication 2022-12
    Size p. 293.
    Publishing place BioMed Central
    Document type Article ; Online
    ZDB-ID 2059868-3
    ISSN 1471-2229
    ISSN 1471-2229
    DOI 10.1186/s12870-022-03675-w
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  5. Article: Crop yield and irrigation water productivity of silage maize under two water stress strategies in semi-arid environment: Two different pot and field experiments

    Gheysari, Mahdi / Pirnajmedin, Fatemeh / Movahedrad, Hamid / Majidi, Mohammad Mahdi / Zareian, Mohammad Javad

    Agricultural water management. 2021 Sept. 01, v. 255

    2021  

    Abstract: Research on water stress strategies (WSS) and crop response to water stress is important to improve irrigation water productivity (WPI) and crop production especially for regions where water is a limited resource. This study was conducted to assess (i) ... ...

    Abstract Research on water stress strategies (WSS) and crop response to water stress is important to improve irrigation water productivity (WPI) and crop production especially for regions where water is a limited resource. This study was conducted to assess (i) the response of silage maize to water stress at different growth stages for contrasting water stress strategies in the semi-arid environment under pot and field experiments irrigated by a drip-tape system, (ii) to determine the relationship between applied water and total biomass (TB) in different WSS in both experiments. The hybrid 704-single-cross of maize was assessed at pot experiment during 2009 and 2010 and field experiment was conducted in 2017 under two WSS including WS1 (same irrigation event with different applied water depth) and WS2 (same applied water depth in different irrigation event) at three growth stages. Each WSS consisted of four different irrigation levels, including severe, moderate, and mild drought stress and a full irrigation. In both pot and field experiments, severe drought stress under WS1 and WS2 strategies led to a depression in LA and TB at tassel (S2) and silage harvest (S3) stages. At each growth stage, WPI values decreased with increasing water-deficit levels in both WSS’s and experiments. We found a linear relationship between TB and applied water for WS1 and WS2 in both experiments. However, the yield performance per unit of water used was higher for WS1 than for WS2. The yield response factor to stress (Ky) values for LA and TB were higher under WS2 than WS1 in both experiments, indicating that WS1 can be employed as an effective deficit irrigation management under the drip-tape irrigation system for maize in an arid area with shortage of water.
    Keywords biomass ; corn ; crop yield ; deficit irrigation ; developmental stages ; field experimentation ; hybrids ; irrigation rates ; irrigation water ; semiarid zones ; silage ; water stress
    Language English
    Dates of publication 2021-0901
    Publishing place Elsevier B.V.
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 751144-9
    ISSN 1873-2283 ; 0378-3774
    ISSN (online) 1873-2283
    ISSN 0378-3774
    DOI 10.1016/j.agwat.2021.106999
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  6. Article: Fatty acid profile, silymarin content and production properties of milk thistle (Silybum marianum) germplasm under different water environments

    Majidi, Mohammad Mahdi / Shafiei-Koij, Fariba / Pirnajmedin, Fatemeh / Jami, Mina / Radan, Zahra

    Crop & pasture science. 2021, v. 72, no. 4

    2021  

    Abstract: Drought stress has an adverse effect on crop production and food quality. Milk thistle (Silybum marianum L.) is an oil and medicinal crop known as an alternative oil crop with high level of unsaturated fatty acids, which makes it a favourable edible oil ... ...

    Abstract Drought stress has an adverse effect on crop production and food quality. Milk thistle (Silybum marianum L.) is an oil and medicinal crop known as an alternative oil crop with high level of unsaturated fatty acids, which makes it a favourable edible oil for use in food production. Silymarin (a mixture of flavonolignans) is the main active medicinal component. Biochemical diversity, changes induced by water deficit stress in secondary metabolites, and their relationships with production traits in native germplasm are poorly understood in milk thistle. Twenty-six ecotypes mainly collected from different regions of Iran were evaluated for oil, fatty acid profile, triacylglycerol (TAG) composition, silymarin and agro-morphological traits under non-stress and water stress conditions for 2 years. Water stress increased oil and silymarin content while decreasing fruit yield and related traits. The most abundant fatty acid averaged over all ecotypes under both moisture conditions was linoleic acid (L, 39%), followed by oleic acid (O, 36%), palmitic acid (P, 9%) and stearic acid (E, 6%). Among the 24 detected TAGs, the five major compositions were OOL, OLL + OOLn (linolenic), POL, OOO, LLL + OLLn and EOL. Superior ecotypes rich in monounsaturated and polyunsaturated fatty acids were identified and can be introduced as candidates for food, medicinal and industrial purposes. Associations among different attributes are discussed.
    Keywords Silybum marianum ; adverse effects ; cooking fats and oils ; ecotypes ; fatty acid composition ; food production ; food quality ; fruit yield ; germplasm ; linoleic acid ; oil crops ; oleic acid ; palmitic acid ; pastures ; secondary metabolites ; silymarin ; stearic acid ; triacylglycerols ; water stress ; Iran
    Language English
    Size p. 302-310.
    Publishing place CSIRO Publishing
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 2472536-5
    ISSN 1836-5795 ; 1836-0947
    ISSN (online) 1836-5795
    ISSN 1836-0947
    DOI 10.1071/CP20489
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  7. Article: Pollination system and deficit irrigation affect flavonolignan components of sylimarin, oil, and productivity of milk thistle

    Majidi, Mohammad Mahdi / Pirnajmedin, Fatemeh / Vakili, Ziba / Shahidaval, Samaneh / Hughes, Nia

    Crop science. 2021 July, v. 61, no. 4

    2021  

    Abstract: The biosynthesis and accumulation of secondary metabolites in plant tissues interact strongly with environmental conditions and breeding systems. Limited knowledge is available on the effects of breeding system (self vs. open pollination) and deficit ... ...

    Abstract The biosynthesis and accumulation of secondary metabolites in plant tissues interact strongly with environmental conditions and breeding systems. Limited knowledge is available on the effects of breeding system (self vs. open pollination) and deficit irrigation on the composition of flavonolignans, seed yield, and oil content of different genotypes of milk thistle (Silybum marianum L.). Four ecotypes of Iranian milk thistle collected from diverse geographical regions were each self‐ and open‐pollinated; they were then assessed in the field under both normal and deficit irrigation for seed yield, oil percentage, silymarin, and its components during 2014 and 2015. Deficit irrigation decreased seed yield and silybin A but increased total silymarin content, silybin B, and silydianin. In both moisture environments, seed yield was positively associated with oil percentage and silybin A. Open pollination improved seed yield, oil percentage, total silymarin, and its components in milk thistle ecotypes as compared with self‐pollination. Considerable genetic variability was observed among the evaluated ecotypes in their response to moisture environments and pollination status. Under open pollination, the northern Iranian ecotypes Mashhad and Sari were identified as promising varieties for further studies.
    Keywords Silybum marianum ; biosynthesis ; deficit irrigation ; ecotypes ; genetic variation ; lipid content ; oils ; open pollination ; secondary metabolites ; seed yield ; self-pollination ; silymarin
    Language English
    Dates of publication 2021-07
    Size p. 2651-2657.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 410209-5
    ISSN 0011-183X
    ISSN 0011-183X
    DOI 10.1002/csc2.20467
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  8. Article: Half‐sib mating for inheritance analysis of post‐drought recovery and productivity related traits in tall fescue

    Pirnajmedin, Fatemeh / Majidi, Mohammad Mahdi / Taleb, Mohammad Hadi / Mirmohammady Maibody, Sayed Ali Mohammad

    Agronomy journal. 2021 May, v. 113, no. 3

    2021  

    Abstract: Climate change has exacerbated the need for grass varieties that are able to not only tolerate prolonged drought stress, but also to recover well post‐drought. The genetic basis of post‐drought recovery related traits and their association with drought ... ...

    Abstract Climate change has exacerbated the need for grass varieties that are able to not only tolerate prolonged drought stress, but also to recover well post‐drought. The genetic basis of post‐drought recovery related traits and their association with drought tolerance has not yet been thoroughly investigated in tall fescue (Festuca arundinacea Schreb. syn. Lolium arundinaceum). Polycross‐derived half‐sib families (HF) were assessed for agro‐morphological traits in the field under three irrigation levels (normal, mild drought, and intense drought stresses) during 2017 and 2018. In the 3rd year (2019), irrigation was withheld for all treatments for 2 mo; after 6 wk re‐watering, the families were assessed for post‐drought recovery. Considerable genetic variation was observed among HF for measured traits. The results show that increased intensity of water stress had adverse effects on post‐drought recovery potential and production. Moderately high values of narrow‐sense heritability for yield components and recovery related traits suggest the influence of additive gene action in the expression of these traits. Significant correlation of yield productivity and recovery forage yield with morphological traits and stress tolerance index indicate that forage production and recovery potential can be predicted via developing an index. The results also indicated that the recovery rate measured in the 3rd year was positively correlated with number of stems per plant and crown diameter of previous years. Based on the general combining ability (GCA) and application of multivariate analysis, families were identified that may be useful for high‐yield production and post‐drought recovery potential as well as turf application.
    Keywords Festuca arundinacea subsp. arundinacea ; additive gene effects ; agronomy ; climate change ; drought ; drought tolerance ; forage production ; forage yield ; genetic variation ; grasses ; heritability ; lawns and turf ; multivariate analysis ; stress tolerance ; water stress
    Language English
    Dates of publication 2021-05
    Size p. 2314-2320.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 410332-4
    ISSN 1435-0645 ; 0002-1962
    ISSN (online) 1435-0645
    ISSN 0002-1962
    DOI 10.1002/agj2.20668
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  9. Article: Variation in persistency, postdrought recovery and root characteristics in a tall fescue germplasm under interactive effects of exogenously applied salicylic acid and water stress

    Taleb, Mohammad Hadi / Majidi, Mohammad Mahdi / Mirmohammady Maibody, Sayed Ali Mohammad / Pirnajmedin, Fatemeh

    Plant breeding. 2021 Aug., v. 140, no. 4

    2021  

    Abstract: This study was performed for a better understanding of genotypic responses of a germplasm of tall fescue to different prolonged drought stresses and exogenously applied salicylic acid (SA) in terms of drought tolerance, postdrought recovery, persistence ... ...

    Abstract This study was performed for a better understanding of genotypic responses of a germplasm of tall fescue to different prolonged drought stresses and exogenously applied salicylic acid (SA) in terms of drought tolerance, postdrought recovery, persistence and root‐related traits. Twenty‐one diverse tall fescue genotypes were evaluated under three irrigation treatments (IT) (normal, mild and intense drought stress) and the presence of two SA concentrations (0 and 1 mM) during 2015–2017. In the fourth year (2018), irrigation was withheld in all treatments for two months in summer (severe drought) and then plants were rewatered to investigate the effect of previous treatments on the mentioned traits. Results indicated that recovery after severe drought and persistence in tall fescue depends on previous environmental conditions with clear differences in genotypic responses. Foliar application of SA improved forage production, drought tolerance, postdrought recovery and most of the root traits, while it had a negative effect on persistence and root length. Associations amongst traits under different treatments and selection of superior genotypes will be discussed.
    Keywords Festuca arundinacea ; drought ; drought tolerance ; foliar application ; forage production ; germplasm ; irrigation ; salicylic acid ; summer ; water stress
    Language English
    Dates of publication 2021-08
    Size p. 678-692.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 232853-7
    ISSN 0179-9541
    ISSN 0179-9541
    DOI 10.1111/pbr.12936
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    Z 426: Show issues

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  10. Article: Genotypic‐specific response to exogenous applied salicylic acid in tall fescue under different irrigation conditions

    Pirnajmedin, Fatemeh / Majidi, Mohammad Mahdi / Taleb, Hadi / Saeidi, Ghodratollah / Shojaiefar, Samira

    Crop science. 2020 Mar., v. 60, no. 2

    2020  

    Abstract: Salicylic acid (SA) is one of the endogenous plant growth regulators that play an important role in the regulation of plant growth and development in response to water deficit. Genotypic‐specific response to exogenous applied SA in terms of physiological, ...

    Abstract Salicylic acid (SA) is one of the endogenous plant growth regulators that play an important role in the regulation of plant growth and development in response to water deficit. Genotypic‐specific response to exogenous applied SA in terms of physiological, enzymatic activity, and yield traits is poorly understood in tall fescue [Lolium arundinaceum (Schreb.) Wimm. syn. Festuca arundinacea Schreb.]. Twenty genotypes of tall fescue (selected from a broad germplasm) were assessed at field condition for morphological and physiological characteristics during 2016 and 2017 under three irrigation levels (normal, mild, and intense drought stress) in the presence of two SA concentrations (0 and 1 mM). Mild and intense drought stress conditions led to depression in photosynthetic pigments including chlorophyll a and b and total chlorophyll contents, plant height, crown diameter, and forage yield, despite increases in proline content, carotenoids, catalase, peroxidase, and ascorbate peroxidase activities. Application of SA decreased the adverse effects of drought stress by elevation of photosynthetic pigments and nonenzyme and enzymatic antioxidant activities and could enhance forage yield and drought tolerance in tall fescue genotypes. High genetic variation was observed among the genotypes in their response to the application of SA under drought stress conditions, and genotypes 3L and 1E were recognized as drought tolerant and stable genotypes for future breeding programs.
    Keywords Festuca arundinacea subsp. arundinacea ; antioxidants ; ascorbate peroxidase ; carotenoids ; catalase ; chlorophyll ; drought tolerance ; enzyme activity ; forage yield ; genetic variation ; germplasm ; growth and development ; peroxidase ; photosynthesis ; plant growth ; plant height ; proline ; salicylic acid ; water stress
    Language English
    Dates of publication 2020-03
    Size p. 1123-1130.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 410209-5
    ISSN 0011-183X
    ISSN 0011-183X
    DOI 10.1002/csc2.20126
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