Qhov loj ntawm pob kws yog dab tsi?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Nws tau pom nyob rau xyoo 1960. Pob kws raws li peb paub nws zoo nkaus li txawv ntawm nws cov poj koob yawm txwv qus. Ancient cob yog tsawg tshaj li 10th ntawm lub qhov loj ntawm niaj hnub pob kws cobs, ntawm txog 2cm (0.8inch) ntev. Thiab cov cob qhia thaum ub tsim tau yim kab ntawm cov kernels, txog ib nrab ntawm cov niaj hnub pob kws.

Ntxiv mus, pob kws zoo li cas thaum chiv thawj?

Tau ntev, cov kws tshawb fawb tsis tuaj yeem paub qhov twg hauv tsev pob kws Ameslikas tuaj ntawm - tsis yog saib zoo li txhua yam uas loj hlob hauv hav zoov. Nws tau ua phem heev los ntawm geneticists, botanists, thiab archaeologists kom paub tias pob kws cais tawm ntawm teosinte nyom li 9,000 xyoo dhau los.

Kuj Paub, pob kws hloov zuj zus li cas? Cov pov thawj los ntawm archaeological thiab genetic kev tshawb fawb qhia tias pob kws tau bred thiab cultivated los ntawm thaum ntxov inhabitants ntawm Mexico thaum ntxov li kaum txhiab xyoo dhau los. Cov Mesoamericans thaum ntxov tau txhim kho pob kws los ntawm nws cov pog koob yawg koob los ntawm kev xaiv yug me nyuam. Pob kws tau bred los ntawm cov nplej qus hu ua teosinte.

Raws li, pob kws ua ntej nws yog pob kws?

Pob kws Domesticated Los ntawm Mexican Wild Grass 8, 700 xyoo dhau los. Pob kws tau nyob hauv tsev los ntawm nws cov tsiaj qus cov poj koob yawm txwv ntau dua 8, 700 xyoo dhau los, raws li cov pov thawj lom neeg pom los ntawm cov kws tshawb fawb hauv Mexico Central Balsas River Valley.

Thaum twg pob kws thawj zaug hloov?

Nws tau nyob hauv tsev 10,000 xyoo dhau los thaum tib neeg tau kawm hla cov paj ntoo thiab maj mam tig cov nyom uas tsis zoo nkauj hu ua teosinte rau hauv plump, tsim khoom niaj hnub. pob kws (Daim duab 1).