Txiv tsawb yog thawj zaug pom hauv South East Asia, feem ntau hauv Is Nrias teb. Lawv tau coj mus rau sab hnub poob los ntawm Arab conquerors nyob rau hauv 327 BCthiab tsiv los ntawm Asia Minor mus rau Africa thiab thaum kawg nqa mus rau lub Ntiaj Teb Tshiab los ntawm thawj cov neeg tshawb nrhiav thiab cov tub txib mus rau Caribbean.
Thaum twg txiv tsawb nrhiav pom?
In 327 BC, thaum Alexander The Great thiab nws cov tub rog nkag mus rau Is Nrias teb, nws nrhiav tau txiv tsawb qoob loo hauv hav Indian. Tom qab saj cov txiv hmab txiv ntoo txawv txawv no thawj zaug, nws tau qhia qhov kev tshawb pom tshiab no rau lub ntiaj teb sab hnub poob. Los ntawm 200 AD txiv tsawb tau kis mus rau Tuam Tshoj.
Leej twg invented lub txiv tsawb niaj hnub?
Qhov no yuav yog xov xwm zoo siab rau Duke William George Spencer Cavendish, uas thawj zaug nthuav tawm tsob ntoo xyoo 1834 thiab muab nws lub npe. Teb Chaws Asmeskas noj 3 lab tons ntawm txiv tsawb txhua xyoo-tus lej loj heev rau lub tebchaws uas tsim tawm tsawg heev.
Ntau npaum li cas txiv tsawb muaj nyob?
Tom qab ntawd pib nthuav tawm Cavendish thoob plaws ntiaj teb. Txiv tsawb muaj keeb kwm ntev ntawm kev tsiv teb tsaws chaw. Cov pov thawj archaeological qhia tias lawv tau cog thawj zaug hauv South-East Asia thiab New Guinea tsawg kawg 6,800 xyoo dhau los, thiab tau kis mus rau Sri Lanka los ntawm 6,000 xyoo dhau los thiab Uganda los ntawm 5, 250 xyoo dhau los.
Ntev npaum li cas txiv tsawb tau hloov kho lawm?
Cov txiv tsawb tau muab cov noob tiv thaiv los ntawm cov txheeb ze qus lossis nematode. Hauv xyoo 2012, cov kws tshawb fawb tau cog lawv cov transgenictxiv tsawb, nrog rau kev tswj tsis tau hloov kho, ntawm thaj chaw thaj tsam li 40 mais sab qab teb ntawm Darwin, Australia, qhov chaw muaj kab mob Panama tuaj txog 20 xyoo dhau los.
