Inosvika 7.0% yenzvimbo yese yepasi inobatwa nemunyu1, zvichireva kuti mahekita anodarika 900 miriyoni evhu pasi rose ari kukanganiswa nezvose zviri zviviri salinity uye sodic salinity2, inoverengera 20% yevhu rinorimwa ne10% yevhu rinodiridzwa. inotora hafu yenzvimbo uye ine munyu wakakwira3. Ivhu rine munyu idambudziko guru rakatarisana nekurima kwePakistan4,5. Pane izvi, mahekita anosvika 6.3 miriyoni kana 14% yeminda yekudiridzira pari zvino iri kukanganiswa nemunyu6.
Abiotic stress inogona kuchinjachirimwa chekukura hormonemhinduro, zvichikonzera kudzikira kwechirimwa uye goho rekupedzisira7. Kana zvidyarwa zvikaiswa mukushushikana kwemunyu, chiyero chiri pakati peiyo reactive oxygen marudzi (ROS) kugadzirwa uye kudzima mhedzisiro ye antioxidant enzymes inokanganiswa, zvichikonzera kuti zvirimwa zvirware neoxidative stress8. Zvirimwa zvine huwandu hwakanyanya hwe antioxidant enzymes (zvese zvinoumba uye inducible) zvine hutano kuramba kune oxidative kukuvara, senge superoxide dismutase (SOD), guaiacol peroxidase (POD), peroxidase-catalase (CAT), ascorbate peroxidase (APOX), uye glutathione reductase. (GR) inogona kuwedzera kushivirira kwemunyu kwezvirimwa pasi pekunetseka kwemunyu9. Uye zvakare, ma phytohormones anonzi anoita basa rekutonga mukukura kwezvirimwa uye kukura, akarongwa sero kufa, uye kurarama pasi pekuchinja kwemamiriro ekunze10. Triacontanol is saturated primary alcohol iyo inhengo yeplant epidermal wax uye ine zvirimwa zvinokurudzira kukura kwemiti11,12 pamwe chete nekukura-kukurudzira zvinhu pazvishoma zvishoma13. Foliar application inogona kuvandudza zvakanyanya photosynthetic pigment chimiro, solute kuunganidza, kukura, uye biomass kugadzirwa muzvirimwa14,15. Foliar kushandiswa kwe triacontanol kunogona kuwedzera kushushikana kwemiti kushivirira16 nekugadzirisa basa re multiple antioxidant enzymes17, kuwedzera osmoprotectant zvinyorwa zvemashizha emashizha emiti11,18,19 uye kuvandudza mhinduro yekutora kwemaminerari anokosha K + uye Ca2 +, asi kwete Na +. 14 Mukuwedzera, triacontanol inogadzira mamwe mashuga ekuderedza, mapuroteni anonyunguduka, uye amino acids pasi pekunetseka mamiriro20,21,22.
Miriwo yakapfuma mu phytochemicals uye zvinovaka muviri uye yakakosha kune akawanda metabolic maitiro mumuviri wemunhu23. Kurimwa kwemuriwo kunotyisidzirwa nekuwedzera kwemunyu muvhu, kunyanya muminda yekurima yekudiridza, iyo inoburitsa 40.0% yechikafu chepasi rose24. Mbeu dzemuriwo dzakaita sehanyanisi, magaka, eggplant, mhiripiri nematomatisi dzinonzwa nemunyu25, uye magaka muriwo wakakosha pakudya kwevanhu pasi rose26. Munyu wemunyu une simba guru pakukura kwegaka, zvisinei, chiyero chemunyu chiri pamusoro pe25 mM chinoita kuti goho rideredze kusvika pa13% 27,28. Kukanganisa kwemunyu pamagaka kunokonzeresa kuderera kwechirimwa uye goho5,29,30. Nokudaro, chinangwa chechidzidzo ichi chaiva chekuongorora basa re triacontanol mukuderedza kushushikana kwemunyu mumagaka genotypes uye kuongorora kukwanisa kwe triacontanol kusimudzira kukura kwezvirimwa uye kubudirira. Ruzivo urwu rwakakoshawo pakugadzira nzira dzakakodzera ivhu resaline. Uye zvakare, isu takasarudza shanduko muion homeostasis mucucumber genotypes pasi peNaCl kushushikana.
Mhedzisiro ye triacontanol pane inorganic osmotic regulators mumashizha mana cucumber genotypes pasi peyakajairika uye munyu kushushikana.
Apo cucumber genotypes yakadyarwa pasi pemamiriro ekushushikana kwemunyu, nhamba yose yemichero uye avhareji uremu hwemichero hwakanyanya kuderedzwa (Fig. 4). Uku kudzikisira kwainyanya kutaurwa muSummer Green uye 20252 genotypes, ukuwo Marketmore neGreen Long vakachengeta nhamba yepamusoro yemichero uye huremu mushure mekunetsa kwemunyu. Foliar kushandiswa kwe triacontanol kwakaderedza migumisiro yakaipa yekushungurudzika kwemunyu uye kuwedzera kwenhamba yemichero uye uremu mune ese genotypes akaongororwa. Nekudaro, iyo triacontanol-yakarapwa Marketmore yakagadzira iyo yepamusoro yemichero nhamba ine yakakwira avhareji huremu pasi pekumanikidzwa uye kudzorwa mamiriro kana zvichienzaniswa nezvinomera zvisina kurapwa. Summer Green uye 20252 yaive neyakanyungudika yakanyanya kunyungudika mumichero yemagaka uye yaita zvisina kunaka kana ichienzaniswa neMarketmore neGreen Long genotypes, yaive neyakadzikira yakazara soluble solids concentration.
Mhedzisiro ye triacontanol pagoho rechina cucumber genotypes pasi pezvakajairwa uye munyu kushushikana mamiriro.
Kunyanya kusanganiswa kwe triacontanol kwaiva 0.8 mg / l, iyo yakabvumira kuderedza migumisiro inouraya ye genotypes yakadzidza pasi pemunyu uye kusagadzikana kwemamiriro ezvinhu. Nekudaro, mhedzisiro ye triacontanol paGreen-Long uye Marketmore yaive pachena. Tichifunga nezve kushivirira kwemunyu kweaya genotypes uye kushanda kwe triacontanol mukuderedza mhedzisiro yekushushikana kwemunyu, zvinokwanisika kukurudzira kukura aya genotypes paivhu resaline nefoliar spraying ne triacontanol.
Nguva yekutumira: Nov-27-2024