Asayansi a ARS adatulutsa mitundu iwiri yatsopano ya mbatata - 'Clearwater Russet' ndi 'Blazer Russet' - yomwe idzagwiritsidwe ntchito ndi McDonald's popanga zokazinga zaku France. Kampaniyo ili ndi muyeso wapamwamba wama spuds ake, popeza idavomereza mitundu isanu ndi iwiri yokha kuti igwiritse ntchito muzowotcha zake pazaka zambiri.
Ndi mtengo wapachaka pafamu wa USD4bn, mbatata zambiri zimapangidwa kumpoto kwa US States ndipo zimasinthidwa kukhala zokazinga ndi tchipisi. Koma mbatata imawonongeka kwambiri, ndipo mbewuyo iyenera kudyedwa, kukonzedwa, kapena kusungidwa mozizira mukangokolola.
Vuto, komabe, ndikuti kusungirako kuzizira kumatha kubweretsa mtundu wakuda wosavomerezeka pambuyo pokonza zomwe zimapangitsa kuti mbatata isagulitsidwe. Njira ina ndikuwonjezera Kupanga m'madera otentha kum'mwera kwa US. Koma kutentha kwamkati necrosis, vuto la tuber lamkati lomwe limatsogolera ku mawanga a bulauni, ndi vuto lalikulu m'malo amenewo.
Ofufuzawo adatulutsa mitundu yatsopano ya mbatata yosagwirizana ndi zovuta zomwe zimachitika panthawi yosungira komanso kutentha kwa necrosis. Zotulutsa zatsopanozi zikuphatikizanso 'Elkton', kalimidwe katsopano kakang'ono kolimbana ndi kutentha kwa mkati komwe kumadziwika kuti ndi kotchuka kwambiri pakati pa alimi kumwera.
Kutentha kwamkati kwa mbatata yaku US kumayambitsa kufa kwa nyama mkati mwa tuber ya mbatata. Mitundu yatsopano ya mbatata ya ARS, Elkton, imalimbana ndi necrosis yamkati. Elkton adatulutsidwa ndi The Agricultural Research Service, US Department of Agriculture, ndi Agricultural Experiment Stations of Florida, Pennsylvania, New Jersey, ndi New York, The North Carolina Agricultural Research Service, ndi Maine Agricultural and Forest Experiment Station mu 2012. ndi yozungulira, yoyera-khungu zosiyanasiyana ndi kukana kutentha kwa mkati necrosis kuti chips mwachindunji kumunda kumwera. Mitundu iyi idzapindulitsa makampani opanga mbatata popanga machubu apamwamba kwambiri opanda zopindika mkati kuti apezeke kwa mapurosesa kumapeto kwa masika ndi m'katikati mwa chilimwe.
Highland Russet ndi mtundu wa mbatata womwe uli ndi ma tubers apakati ndipo ndiwodziŵika chifukwa cha zokolola zambiri zogulika komanso mapuloteni a tuber (35% kuposa Russet Burbank). Ndiwoyenera kumsika watsopano komanso kusinthidwa kukhala zokazinga zaku France ndi mbatata zina zowuma zokhala ndi mtundu wabwino kwambiri wokazinga komanso kuchepa kwa malekezero a shuga.
Clearwater Russet ndi mtundu wa mbatata wa russet woyenerera kukonzedwa kapena kulongedza mwatsopano. Ndizodziwikiratu chifukwa chokhala ndi zofooka zochepa zakunja zomwe zimapangitsa kuti pakhale zokolola zambiri za US No 1 poyerekeza ndi zomwe zimagwiritsidwa ntchito pazinthu ziwiri, Russet Burbank. Clearwater Russet imakhalanso ndi khalidwe lapadera lopangira, lomwe limakhala lochepa kwambiri la malekezero a shuga komanso kutsekemera kotsekemera kozizira komwe kumalola kusungidwa kutentha kwa 7.2 ° C kwa masiku 250 popanda kufunikira kukonzanso, ndi mtundu wachangu kuchokera kusungirako. boma kukhala nthawi zonse pa 1.0 (USDA Fry Color Scale).
Mtundu uwu ndi wodziwikanso chifukwa chokhala ndi protein yambiri ya tuber, yomwe inali yokulirapo ndi 35% kuposa ya Russet Burbank. M'mayesero anthawi zonse omwe adachitika kwa zaka zitatu ku California, Colorado, Idaho, Oregon, ndi Washington, Clearwater Russet anali ndi zokolola zotsika pang'ono kuposa Ranger Russet ndi Russet Burbank, koma pafupifupi 2% ndi 30% apamwamba US No. zokolola, motero, m'mayiko onse.
Wapakati mphamvu yokoka ya Clearwater Russet ikufanana ndi Ranger Russet komanso yokwera kwambiri kuposa Russet Burbank. Clearwater Russet imalimbana ndi kachilombo ka mbatata X (PVX) ndi tuber mochedwa choipitsa ndipo imalimbana ndi Verticillium wilt, nkhanambo, ndi mtundu wamba wa virus Y (PVYO).
Zizindikiro za matenda ndi mitundu iwiri ya necrotic ya PVY sizinawonedwe mu ma tubers a Clearwater Russet kapena Russet Burbank koma zinawonedwa mu Ranger Russet. Blackspot bruise reaction ya Clearwater Russet imatchulidwa pang'ono poyerekeza ndi Ranger Russet kapena Russet Burbank.
Kuchitika kwa mtima wopanda phokoso ku Clearwater Russet ndikwapakati pakati pa Ranger Russet ndi Russet Burbank. Malo a bulauni amkati adziwika ngati vuto la Clearwater Russet ku Columbia Basin ku Oregon koma silinawoneke ngati lovuta m'madera ena omwe akukula.
Clearwater Russet inatulutsidwa mu 2008 ndi USDA-ARS ndi Agricultural Experiment Stations of Idaho, Oregon, ndi Washington, ndipo ndi mankhwala a Pacific Northwest Potato Variety (Tri-State) Development Program.