Cov kws tshawb fawb hauv University of Utah tau pom cov pov thawj pom tias cov neeg hauv tebchaws Qaum Teb Asmeskas tau siv qos yaj ywm qus rau zaub mov 10 xyoo dhau los.
Keeb kwm ntawm kev noj qos yaj ywm ua ntej rau kev cog qoob loo los ntawm tib neeg yog nkag siab zoo thiab tau txwv kom txog thaum nyuam qhuav dhau los rau Asmeskas Asmeskas. Yog li, xyoo 2016, cov kws tshawb fawb tau txais cov pov thawj pom tias cov neeg Khab hauv cov neeg Andes tau cog qos yaj ywm txog 5000 xyoo dhau los. Hauv North thiab Central America, tsawg kawg 20 cov tsiaj qus hom qoob loo hauv paus tau paub los ntawm cov genus Solanum (tsaus ntuj tsev neeg), tab sis lawv qhov tseem ceeb ntawm cov pluas noj ntawm cov neeg Asmeskas thaum ub tseem tsis tau tsim. Cov kws tshawb nrhiav keeb kwm Asmeskas tau sau qhov sib txawv no thiab ua qhov kev tshawb xyuas ntawm cov hmoov txhuv nplej siab pom ib qho ntawm ib qho chaw ntawm kev khawb puag thaum ub.
Qos Yaj Yeem Siv Cov Ntaub Ntawv Qos yaj ywm twb tau los ntawm South America, hauv Kasma Valley, Peru, thiab tau sau rau hnub nyoog ntawm 7 xyoo, txawm hais tias tsis muaj kev pom zoo ntawm cov kws tshawb fawb hais tias cov no yog cov tsiaj qus lossis twb muaj nroj tsuag tsiaj. Rau txoj kev kawm tshiab no, cov kws tshawb fawb tau siv los ntawm North Creek Chaw Tiv Thaiv nyob sab qab teb Utah. Tau pom ntau cov pov thawj ntawm cov haujlwm tseem ceeb ntawm cov neeg thaum ub: hnov pob zeb thiab pits, cov khoom siv pob zeb, cov seem ntawm cov nroj tsuag thiab tsiaj txhu. Cov kev tshawb nrhiav tau tshwm sim xya txheej txheej kev cai uas muaj hnub nyoog 800 xyoo dhau los.
Cov kws tshawb fawb tshuaj xyuas cov seem ntawm saum npoo ntawm 101 pob zeb cov cuab yeej tau pom ntawm no. Cov chaw ntawm 24 lub twj paj nruag muaj 323 cov hmoov txhuv nplej siab, ntawm uas cuaj granules thaum kawg tau txheeb xyuas tias yog koom nrog cov qos yaj ywm qus ntau yam Solanum jamesii thiab 61 granules yog txhais tau tias yog qhov zoo li yuav tawg ntawm cov nroj tsuag no. Radiocarbon tsom xam ntawm pob zeb cov cuab yeej ntawm cov uas seem ntawm cov qos yaj ywm tau pom pom tias muaj hnub nyoog txog 10-900 xyoo. Thiab qhov kev tshawb pom no, raws li cov kws tshawb fawb, yog cov pom zoo tshaj plaws thawj cov pov thawj siv cov qos yaj ywm hauv North America. Thiab txij li thaum qos tuaj rau Tebchaws Europe los ntawm Amelikas, tej zaum yog qhov qub tshaj plaws qos seem hauv lub ntiaj teb.
Nyuam qhuav pib, cov kws tshawb xyuas keeb kwm twb pom cov kab ntawm kev siv cov nroj tsuag tsiaj qus los ntawm tib neeg ua ntej pib ua qoob loo. Piv txwv li, cov zaub txhwb qaib tau siv nyob hauv tebchaws Ltalis 32 xyoo dhau los, thiab cov nyom thiab cov nyom qus hauv Ixayees 600 xyoo dhau los.
Cov kev tshawb fawb tau luam tawm nyob rau hauv phau ntawv Kev Ncaj Ncees ntawm National Academy of Sciences.
Tau qhov twg los: https://chrdk.ru