Comprehensive biochemical insights into the seed germination of walnut under drought stress

Basit Öğe Kaydı
dc.authoridCakmakci, Ramazan/0000-0002-1354-1995
dc.authoridVahdati, Kourosh/0000-0001-8458-8697
dc.contributor.authorLotfi, Naser
dc.contributor.authorSoleimani, Ali
dc.contributor.authorVahdati, Kourosh
dc.contributor.authorCakmakci, Ramazan
dc.date.accessioned2025-01-27T20:41:08Z
dc.date.available2025-01-27T20:41:08Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe evaluation of physiological and biochemical aspects is essential to identify clues that can assist breeders in selecting Persian walnut genotypes with considerable tolerance to drought stress. This objective can be obtained by analyzing seed biochemical compounds from different genetic resources, e.g. seeds from individual trees that are commonly exposed to drought stress. In the current research, we evaluated the effects of drought stress, as induced by PEG(6000), on the germination of walnut seeds collected from six promising genotypes (i.e. 'SS2', 'TT2', 'TT1', 'ZM1', 'Haward' and 'Chandler'). A photoperiod of 12 h was provided during the experiments, along with an average temperature of 25 +/- 1 degrees C. According to the different indexes of germination, a greater tolerance was observed among three genotypes, namely, 'ZM1', 'Haward' and 'Chandler'. In response to drought stress, the contents of proline and total soluble sugars increased, especially at intense levels of stress, whereas the amount of starch decreased. The levels of antioxidant activity significantly increased by POD, APX, CAT, SOD and LOX enzymes in the radicle and plumule tissues as the water potential reached -1.5 MPa. Three genotypes, namely, TT2', 'TT1' and 'SS2' were susceptible to cell wall damage (i.e. by lipid peroxidation). High levels of Spd and Spm in tolerant genotypes were accompanied by significant increases in the zeatin, endogenous IAA, zeatin riboside and ABA in the seeds. Our results suggest that, under drought stress, seed germination in walnuts can benefit from the accumulation of free Spd in seeds during the phases of germination. However, the accumulation of free Put appeared to be an inhibitory factor which suppressed the germination of walnut seeds.
dc.description.sponsorshipUniversity of Zanjan; Ataturk University of Turkey
dc.description.sponsorshipWe are grateful to the University of Zanjan and the Ataturk University of Turkey for their supports. We also thank Dr. Parisa Mohammadi for her scientific and laboratory support at Atatiirk University of Turkey. We acknowledge the University of Urmia for providing greenhouse supplies during practical stages of research.
dc.identifier.doi10.1016/j.scienta.2019.02.060
dc.identifier.endpage343
dc.identifier.issn0304-4238
dc.identifier.issn1879-1018
dc.identifier.scopus2-s2.0-85062098839
dc.identifier.scopusqualityQ1
dc.identifier.startpage329
dc.identifier.urihttps://doi.org/10.1016/j.scienta.2019.02.060
dc.identifier.urihttps://hdl.handle.net/20.500.12428/24031
dc.identifier.volume250
dc.identifier.wosWOS:000463128200041
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofScientia Horticulturae
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectJuglans regia
dc.subjectHormone
dc.subjectPhenolic compounds
dc.subjectPolyamine
dc.subjectSeed germination
dc.titleComprehensive biochemical insights into the seed germination of walnut under drought stress
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu