Ukusiza abalimi ukuthi bathole izinhlobo zamazambane ezikwazi ukumelana nokuphazamiseka okungaba khona kwamaza okushisa kubalulekile ekusimameni nasekuzuzeni inzuzo yamathani ayizigidi ezi-4.5 ngonyaka wokukhiqiza amazambane, kubika Portal Amazambane.news.
Ngokubona lesi sidingo, uDkt. Xu-Qing Li, Umlingani Wezokucwaninga Wezolimo kanye Nezolimo lwaseCanada (AAFC) e-Fredericton Research and Development Centre eNew Brunswick, useneminyaka efunda ukucindezeleka kokushisa emazambaneni. Ngo-2018, wathatha umsebenzi wakhe waya kwelinye izinga ngokuhlanganisa amabutho neqembu lososayensi abavela eNyuvesi yaseNew Brunswick kanye nenani labahlanganyeli bamazwe ngamazwe ukuze bafunde ukuphendula kwezinhlobo ezingama-55 ezihlukene zamazambane ekushiseni ingcindezi, ucwaningo lokuqala olukhulu. yohlobo lwayo.
Ezinhlotsheni eziningi ezifundwayo, ukucindezeleka kokushisa kunciphisa ubukhulu bamaqabunga, kodwa kwandisa iziqongo nokuphakama kwezitshalo, kuyilapho kunciphisa kakhulu inani nesisindo sezilimo eziyizigaxa. Lolu cwaningo luphinde lwathola ukuthi yiziphi izinhlobo ezikwazi ukumelana nokushisa kakhulu: i-Eramosa, i-Chieftain, i-AC Belmont ne-Superior.
Ukuhlonza lezi zinhlobonhlobo kwakuyisinyathelo sokuqala esibalulekile, kodwa ngisho nala mazambane akenzanga kahle ikakhulukazi lapho kushisa, ngakho kwacaca ukuthi kwakudingeka ucwaningo olwengeziwe. Ngo-2020, uDkt. Lee wabambisana nozakwabo we-AAFC uDkt. Benoît Bizimungu kanye nososayensi e-Queen's University ukuze benze ucwaningo olwanikezwa kamuva i-American Journal of Potato Research.
Ekushicilelweni kwabo "Umthelela wokuvuthwa kwangaphambi kwesikhathi ekumelaneni nengcindezi yokushisa ezinhlotsheni ezingamashumi amahlanu zamazambaneKwagcizelelwa ukuthi izinhlobo zamazambane ezaziwa ngokuvuthwa kwazo ekuqaleni ensimini zikhule ngesilinganiso esifanayo nezakamuva lapho zingaphansi kwengcindezi yokushisa ezindlini zokugcina izithombo, i.e. ukushisa empeleni kwehlisa inqubo yabo yokuvuthwa.
Ucwaningo lukaDkt. Lee kanye nozakwabo lufune ukuhlonza izakhi zofuzo ezithile zamazambane ezingasiza ukuchaza ukuthi kungani lokhu kunjalo kanye nezindlela ezinquma ukuthi uhlobo lwamazambane luzovuthwa ngaphambi kwesikhathi noma sekwephuzile.
Ingcindezi yokushisa yenza ukuba amazambane asabele ngokushintsha isikhathi esithathayo ukuze avuthwe, futhi amazinga okushisa aphezulu abambezela ukukhula kwawo.
Kulandela lolu cwaningo oluhlomule, uDkt. Lee wethula futhi wahola iphrojekthi entsha yocwaningo ukuze afunde okwengeziwe futhi angene ajule ezindleleni ze-genomic zokuphendula kwezambane ekucindezelekeni kokushisa. Ngo-2020, wahlonza izakhi zofuzo ezilawula ukuhluma okubangelwa ukushisa.
Amazambane atshalwa ehlobo elishisayo, elomile ngokuvamile anesici esibizwa ngokuthi "izithombo zangaphambi kokuvuna" noma "izithombo ezishisayo" ezingashintsha ukwakheka kwamakhemikhali kwezilimo eziyizigaxa futhi kunciphise ikhwalithi jikelele kanye nokuthengiseka kwamazambane.
Kulolu cwaningo, kusetshenziswe izinhlobo eziyi-18 ezahlukene ukuthola ukuthi izimo zokucindezelwa ukushisa zizodwa ziyimbangela yamahlumela ayinkinga. Le phrojekthi yaqinisekisa ukuthi ukushisa kwakuyimbangela ngempela, nokuthi ukubambezeleka kwemvelo noma ukubambezeleka kwezinhlobonhlobo okukhulunywa ngazo akuhlangene nokuthi ihlume ngaphansi kwengcindezi.
Ukuze kufinyelelwe lesi siphetho, abacwaningi abasebenza noDkt Li bafunde izimpendulo ze-transcriptome zamazambane agcizelelwe ukushisa. Ucwaningo lwe-Transcriptome lubandakanya ukuhlola izakhi zofuzo, amanethiwekhi okusebenzelana kwezakhi zofuzo, kanye nezici ze-mRNA zeseli ukuze kubonakale ukuthi ziziphatha kanjani lapho zibhekene nezici zemvelo noma izifo, kunikeze ukubheka okujulile nokunemininingwane mayelana nokuziphatha nokusebenza kwamangqamuzana.
Ucwaningo luthole ukuthi izakhi zofuzo ezihambisana ne-dormancy ziyancipha kumazambane agcizelelwe ukushisa, njengoba nje kwenzeka ngemva kokuvuna ngemva kokuvuna amazambane agcizelele ukushisa ngemva kokuvuna, okubonisa ukuthi i-hormone metabolism yezitshalo idlala indima ebalulekile ekuhlumeni. Lolu lwazi luzoba usizo uma kuziwa ekuthuthukiseni izinhlobo zamazambane ukuze zimelane nokuhluma ngaphansi kwezimo eziphakeme zokushisa.
“Esikutholile kuzosiza abalimi nabacubungula ukuthi benze izinqumo ezingcono mayelana nendlela yokugcina nokucubungula amazambane anengcindezi yokushisa,” kusho u-Xiu-Qing Li. "Lena yinselelo abakhiqizi emhlabeni jikelele ababhekene nayo, futhi kube kuhle ukuthi sikwazi ukufaka isandla ekuqondeni kwethu lolu daba futhi sinikeze izincomo ezisekelwe ebufakazini." Lolu cwaningo lunikeze ukuqonda okubalulekile ekukhetheni izinhlobo zamazambane ezizokhula, indlela engcono kakhulu yokuhlela ukugcinwa nokusetshenziswa kwamazambane anengcindezi ekushiseni, kanye nolwazi lokusiza ukuthuthukisa izinhlobo ezikwazi ukumelana nokushisa esikhathini esizayo.
Njengoba ukuguquka kwesimo sezulu kusongela ukuletha isimo sezulu esishisayo nakakhulu futhi esiguquguqukayo, uDkt. Lee uphakamisa ukuhlolwa okwengeziwe kwezinhlobo ngezikhathi ezishisayo zasehlobo kanye nokuthuthukiswa okuqhubekayo kwamasu aphelele okunciphisa ingozi yokucindezeleka kokushisa.
Lolu cwaningo lunegalelo elibalulekile ekwehliseni ubungozi bokukhiqizwa kwamazambane eCanada nasemhlabeni jikelele.