Hoo e ka bang 7.0% ea sebaka sohle sa lefats'e se angoa ke letsoai1, ho bolelang hore lihekthere tse fetang limilione tse 900 tsa lefats'e li angoa ke letsoai le letsoai la sodic salinity2, e leng karolo ea 20% ea mobu o lengoang le 10% ea mobu o nosetsoang. e nka halofo ea sebaka mme e na le letsoai le phahameng3. Mobu o nang le letsoai ke bothata bo boholo bo tobaneng le temo ea Pakistan4,5. Ho sena, hoo e ka bang lihekthere tse limilione tse 6.3 kapa 14% ea mobu o nosetsoang hajoale o angoa ke letsoai6.
Khatello ea mali e ka fetohahormone ea ho hōla ha semelakarabo, e bakang ho fokotseha ha kholo ea lijalo le chai ea ho qetela7. Ha limela li pepesehetse khatello ea letsoai, ho leka-lekana pakeng tsa tlhahiso ea oksijene e sebetsang (ROS) le phello ea ho tima ea li-enzyme tsa antioxidant ea khathatseha, e leng se etsang hore limela li be le khatello ea oxidative8. Limela tse nang le likhahla tse phahameng tsa li-enzyme tsa antioxidant (tse ka bobeli le tse inducible) li na le khanyetso e phetseng hantle ea ts'enyo ea oxidative, joalo ka superoxide dismutase (SOD), guaiacol peroxidase (POD), peroxidase-catalase (CAT), ascorbate peroxidase (APOX), le glutathione reductase. (GR) e ka ntlafatsa mamello ea letsoai ea limela tlas'a khatello ea letsoai9. Ho feta moo, ho tlalehiloe hore li-phytohormones li phetha karolo ea taolo ho holeng le ho nts'etsopele ea limela, ho shoa ha lisele tse hlophisitsoeng, le ho phela tlas'a maemo a fetohang a tikoloho10. Triacontanol ke tahi e ka sehloohong e tletseng joala e leng karolo ea boka ba limela tsa epidermal mme e na le thepa ea ho hōlisa limela11,12 hammoho le thepa ea ho hōlisa khōlo maemong a tlaase13. Tšebeliso ea foliar e ka ntlafatsa haholo boemo ba photosynthetic pigment, ho bokellana ha solute, kholo, le tlhahiso ea biomass limela14,15. Tšebeliso ea foliar ea triacontanol e ka ntlafatsa mamello ea khatello ea limela16 ka ho laola mosebetsi oa li-enzyme tse ngata tsa antioxidant17, ho eketsa litaba tsa osmoprotectant tsa makhasi a makhasi a semela11,18,19 le ho ntlafatsa karabo ea ho amoheloa ha liminerale tsa bohlokoa tsa K + le Ca2 +, empa eseng Na +. 14 Ho feta moo, triacontanol e hlahisa tsoekere e ngata e fokotsang, liprotheine tse qhibilihang, le li-amino acid tlas'a maemo a khatello ea maikutlo20,21,22.
Meroho e na le lik'hemik'hale tse ngata tsa phytochemicals le limatlafatsi 'me e bohlokoa bakeng sa mekhoa e mengata ea metabolism' meleng oa motho23. Tlhahiso ea meroho e sokeloa ke ho eketseha ha letsoai la mobu, haholo-holo libakeng tsa temo tse nosetsoang, tse hlahisang 40.0% ea lijo tsa lefatše24. Lijalo tsa meroho tse kang onion, cucumber, eggplant, pepere le tamati li utloa bohloko ho letsoai25, 'me likomkomere ke meroho ea bohlokoa bakeng sa phepo ea batho lefatšeng ka bophara26. Khatello ea letsoai e na le phello e kholo ho sekhahla sa kholo ea likomkomere, leha ho le joalo, maemo a letsoai a ka holimo ho 25 mM a fella ka phokotso ea lihlahisoa tse fihlang ho 13% 27,28. Litlamorao tse mpe tsa letsoai ho likomkomere li baka ho fokotseha ha kholo ea semela le chai5,29,30. Ka hona, sepheo sa phuputso ena e ne e le ho hlahloba karolo ea triacontanol ho fokotsa khatello ea letsoai ho cucumber genotypes le ho hlahloba bokhoni ba triacontanol ho khothalletsa kholo ea limela le tlhahiso. Tlhahisoleseding ena e bohlokoa hape bakeng sa ho hlahisa mekhoa e loketseng mobu oa letsoai. Ho phaella moo, re ile ra etsa qeto ea liphetoho tsa ion homeostasis ka likomkomere genotypes tlas'a khatello ea NaCl.
Phello ea triacontanol ho li-inorganic osmotic regulator makhasi a cucumber genotypes tlas'a khatello e tloaelehileng le letsoai.
Ha li-genotypes tsa likomkomere li ne li jaloa tlas'a maemo a khatello ea letsoai, palo eohle ea litholoana le boima bo tloaelehileng ba litholoana li fokotsehile haholo (setšoantšo sa 4). Liphokotso tsena li ile tsa bonahala haholoanyane ho Summer Green le 20252 genotypes, ha Marketmore le Green Long li bolokile palo e phahameng ka ho fetisisa ea litholoana le boima ba 'mele ka mor'a phephetso ea letsoai. Tšebeliso ea foliar ea triacontanol e fokolitse liphello tse mpe tsa khatello ea letsoai le ho eketseha ha palo ea litholoana le boima ba mefuta eohle ea genotype e hlahlobiloeng. Leha ho le joalo, Marketmore e entsoeng ka triacontanol e hlahisitse palo e phahameng ka ho fetisisa ea litholoana tse nang le boima ba karolelano e phahameng tlas'a maemo a sithabetsang le a laoloang ha a bapisoa le limela tse sa phekoloang. Summer Green le 20252 li ne li e-na le lintho tse tiileng ka ho fetisisa tse qhibilihang ka har'a litholoana tsa likomkomere 'me li sebelitse hampe ha li bapisoa le Marketmore le Green Long genotypes, tse neng li e-na le metsoako e tlase ka ho fetisisa ea lintho tse qhibilihang.
Phello ea triacontanol tlhahisong ea mefuta e mene ea likomkomere tlas'a maemo a tloaelehileng le khatello ea letsoai.
Motsoako o nepahetseng oa triacontanol e ne e le 0.8 mg / l, e leng se ileng sa lumella ho fokotsa liphello tse bolaeang tsa li-genotype tse ithutoang tlas'a khatello ea letsoai le maemo a se nang khatello ea kelello. Leha ho le joalo, phello ea triacontanol ho Green-Long le Marketmore e ne e hlakile haholoanyane. Ha ho nahanoa ka bokhoni ba ho mamella letsoai la mefuta ena ea liphatsa tsa lefutso le katleho ea triacontanol ho fokotsa litlamorao tsa khatello ea letsoai, hoa khoneha ho khothaletsa ho lema mefuta ena ea tlhaho mobung oa letsoai ka ho fafatsa ka foliar ka triacontanol.
Nako ea poso: Nov-27-2024