Inenge 7.0% yenzvimbo yose yepasi rose inokanganiswa nemunyu1, zvinoreva kuti mahekita anopfuura mamiriyoni 900 enyika inokanganiswa nemunyu uye sodium salinity2, zvichiita 20% yevhu rinorimwa uye 10% yevhu rinodiridzwa. Ivhu rinotora hafu yenzvimbo iyi uye rine munyu wakawanda3. Ivhu rine munyu idambudziko guru riri kutarisana nekurima kwePakistan4,5. Panyaya iyi, mahekita angangoita mamiriyoni 6.3 kana 14% yenyika inodiridzwa parizvino inokanganiswa nemunyu6.
Kushushikana kweAbiotic kunogona kuchinjahormone yekukura kwezvirimwamhinduro, zvichikonzera kudzikira kwekukura kwezvirimwa uye goho rekupedzisira7. Kana zvirimwa zvikasangana nekumanikidzwa kwemunyu, kuenzana pakati pekugadzirwa kwemhando dzeokisijeni dzinoshanda (ROS) uye kudzima kweenzymes dzinorwisa antioxidant kunokanganiswa, zvichikonzera kuti zvirimwa zvitambure nekumanikidzwa kweokisijeni8. Miti ine huwandu hwakawanda hweenzymes dzinorwisa antioxidant (dzose dziri constitutive neinducible) ine hutano hwakanaka hwekusakuvara kweokisijeni, senge superoxide dismutase (SOD), guaiacol peroxidase (POD), peroxidase-catalase (CAT), ascorbate peroxidase (APOX), uye glutathione reductase (GR) inogona kuwedzera kushivirira munyu kumiti iri pasi pekumanikidzwa kwemunyu9. Pamusoro pezvo, phytohormones dzakataurwa kuti dzinoita basa rekutonga mukukura nekukura kwezvirimwa, kufa kwemasero kwakarongwa, uye kurarama pasi pemamiriro ekunze anochinja10. Triacontanol idoro guru rakazara riri chikamu chewakisi ye epidermal yezvirimwa uye rine hunhu hwekusimudzira kukura kwezvirimwa11,12 pamwe nehunhu hwekusimudzira kukura pahuwandu hwakaderera13. Kushandiswa kwemashizha kunogona kuvandudza zvakanyanya chimiro chepigment ye photosynthetic, kuunganidzwa kwe solute, kukura, uye kugadzirwa kwe biomass muzvirimwa14,15. Kushandiswa kwe triacontanol pamashizha kunogona kuwedzera kushivirira kushushikana kwezvirimwa16 nekudzora mashandiro ema enzymes akawanda e antioxidant17, kuwedzera osmoprotectant mumashizha emiti11,18,19 uye kuvandudza kutorwa kwemaminerari akakosha K+ neCa2+, asi kwete Na+.14 Pamusoro pezvo, triacontanol inogadzira shuga dzinoderedza, mapuroteni anonyungudika, uye maamino acids pasi pemamiriro ekumanikidzwa20,21,22.
Muriwo wakapfuma mu phytochemicals uye zvinovaka muviri uye zvakakosha pakuita mabasa mazhinji emuviri wemunhu23. Kurimwa kwemuriwo kuri panjodzi nekuwedzera kwemunyu wevhu, kunyanya munzvimbo dzekurima dzinodiridzwa, dzinoburitsa 40.0% yechikafu chepasi rose24. Zvirimwa zvemuriwo zvakaita sehanyanisi, makuki, eggplant, mhiripiri nematomatisi zvinonzwa munyu25, uye makuki imuriwo unokosha pakudya kwevanhu pasi rose26. Kushushikana kwemunyu kune mhedzisiro yakakura pakukura kwemakuki, zvisinei, mwero wemunyu uri pamusoro pe25 mM unoguma nekuderera kwegoho kusvika 13%27,28. Migumisiro yakaipa yemunyu pamakuki inokonzera kudzikira kwekukura kwezvirimwa negoho5,29,30. Nokudaro, chinangwa chechidzidzo ichi chaive chekuongorora basa re triacontanol mukuderedza kushushikana kwemunyu mu genotypes dzemakuki uye kuongorora kugona kwe triacontanol kukurudzira kukura nekubudirira kwezvirimwa. Ruzivo urwu rwakakoshawo pakugadzira nzira dzakakodzera ivhu rine munyu. Pamusoro pezvo, takaona shanduko mu ion homeostasis mu cucumber genotypes pasi pekumanikidzwa kweNaCl.
Mhedzisiro ye triacontanol pane inorganic osmotic regulators mumashizha emhando ina dzema cucumber pasi pekumanikidzwa kwakajairika uye munyu.
Kana mhando dzema cucumber dzakadyarwa pasi pemamiriro ekumanikidzwa kwemunyu, huwandu hwemichero yese uye huremu hwemichero hwepakati zvakaderedzwa zvakanyanya (Mufananidzo 4). Kuderedzwa uku kwakaonekwa zvakanyanya mumhando dzema genotype dzeSummer Green ne20252, nepo Marketmore neGreen Long dzakaramba dzine huwandu hwemichero yakawanda nehuremu hwepamusoro mushure mekunetseka kwemunyu. Kushandiswa kwetriacontanol pamashizha kwakaderedza migumisiro yakaipa yekumanikidzwa kwemunyu uye kwakawedzera huwandu hwemichero nehuremu mumhando dzese dzema genotype dzakaongororwa. Zvisinei, Marketmore yakarapwa netriacontanol yakaburitsa huwandu hwemichero yepamusoro ine huremu hwepamusoro pasi pemamiriro ekumanikidzwa uye akadzorwa zvichienzaniswa nemiti isina kurapwa. Summer Green ne20252 dzaive nehuwandu hwepamusoro hwezvinyama zvinonyungudika mumichero yema cucumber uye dzakaita zvisina kunaka zvichienzaniswa nerudzi rweMarketmore neGreen Long, idzo dzaive nehuwandu hwakaderera hwezvinyama zvinonyungudika.
Mhedzisiro yetriacontanol pakukura kwemarudzi mana emacucumber pasi pemamiriro ezvinhu akajairwa uye ane munyu.
Kuwanda kwakakwana kwe triacontanol kwaive 0.8 mg/l, izvo zvakabvumira kuderedza migumisiro inouraya ye genotypes dzakadzidzwa pasi pekumanikidzwa kwemunyu uye mamiriro asina kumanikidzwa. Zvisinei, mhedzisiro ye triacontanol paGreen-Long neMarketmore yaive pachena. Tichifunga nezvekugona kwe genotypes idzi kushivirira munyu uye kushanda kwe triacontanol mukuderedza migumisiro yekumanikidzwa kwemunyu, zvinokwanisika kukurudzira kurima genotypes idzi pavhu remunyu nekupfapfaidza ne foliar ne triacontanol.
Nguva yekutumira: Mbudzi-27-2024