Nyob rau hauv lub evolution ntawm xwm tuaj nrog cov nram qab no txoj kev cog hais tawm: noob thiab vegetative.
Cov yav tas implies tau ntawm ib tug tshiab neeg los ntawm tej ib feem ntawm cov nroj tsuag. Nws yog ib yam ntawm cov cloning. Cov nroj tsuag ua nws pes tsawg daim ntawv. Qhov no muaj teeb meem loj zoo - feem ntau yog hom yuav nteg qe nyob rau hauv no txoj kev, unpretentious, resistant rau cov kev hloov nyob rau hauv lub cheeb tsam, zoo rau lawv kom pab tau. Tab sis muaj ib co drawbacks - lawv muaj peev xwm tsis nyob chaw loj loj, vim yog tsis muaj mechanism ntawm txav ntawm tus neeg subsidiary tshaj ntev ncua kev, nws yog bound mus rau leej niam nroj tsuag.
Noob (muaj txiv neej thiab poj niam paj) expansion tuaj tom qab, nws muab ib tug boost rau lub resettlement ntawm cov nroj tsuag nyob rau hauv lub ntiaj teb saum npoo av. Yog, qhov no tu tub tu kiv yog tsis ruaj khov tau, no mas nyob rau ntawm tej yam kev mob nyob rau hauv uas lub noob poob. Tab sis cov nroj tsuag tau pom ib txoj kev los daws kom tau qhov teeb meem no. Lawv tsim noob ntawm lub sij hawm ntau tshaj li tsim nyog, ua nyiaj rau qhov tseeb hais tias 60% ntawm cov nroj tsuag tsuas yog yuav tsis tau tsim. Yog li ntawd, yuav tau balanced. Nws tshwm sim hais tias ib co ntawm cov muaj tej zaum yuav siv ntau hom nroj hais tawm. Piv txwv li, txiv pos nphuab no mas propagated los ntawm tua, tab sis ob peb cov neeg paub hais tias nws yuav qhia thiab noob.
tsob nroj hais tawm txoj kev tau ua raws nraim li cov neeg, thaum lawv xam hais tias koj muaj peev xwm tsim tshiab ntau ntau yam nrog paub zoo. Yog li tau yug los rau qhov kev kawm ntawm chaw ua taus zes. Ntawm cov hoob kawm, yuav tau txais ib tug tshiab ntau yam ntawm cov nroj tsuag propagated los ntawm noob, nws yog heev yooj yim. Nws yog ib tug ntev thiab laborious ua hauj lwm. Cia li xav txog tej yam: lub breeder yuav tsum tawg tus txiv neej paj on ib tug nroj tsuag, ces mus rau pollinate lawv paj rau lwm yam, dua li yuav ua rau nws tshaj ib tug loj cheeb tsam. Tej kev ua siab ntev tsuas envy. Yooj yim tus ntoo khaub lig-pollinated nrog - lawv cia li muab tso rau ib tug xov tooj thiab xaiv cov kev kawm khoom. Nws yog yeej yooj yim, tab sis xyaum qhia tau hais tias lub sij hawm ntawm qhov kev xaiv no kuj yog tsis ruaj tsis khov.
Tab sis txoj kev ntawm vegetative hais tawm ntawm cov nroj tsuag tsim ntau li tau. Lawv muaj xws li chaw ua taus zes siv tua, cuttings, keeb kwm, tubers thiab qhov muag teev. Cov kev ntawm tsob nroj hais tawm siv lug gardeners yog koom txiv hmab txiv ntoo, paj thiab txiv hmab txiv ntoo cov qoob loo. Qhov ntau hais tias qhov no txoj kev yog yooj yim thiab muab ib tug 80-85% kawm tau zoo npaum li cas. Piv txwv li, cov hauv paus hniav tua cov me nyuam ntau txiv hmab txiv ntoo ntoo. Nyob rau hauv tas li ntawd, feem ntau siv graft cuttings ntawm ntau ntau yam rau loj hlob ntoo los yog coj seedlings. Txiv pos propagated paus dab. Tau ib tug tshiab Currant hav txwv yeem yuav txo ceg sprinkled hauv av. Ib tug pos nphuab nrog ib tug qhov chaw tshaj tawm muab ib tug mustache. Yog hais tias koj xam ntau npaum li cas koj yuav tau txais los ntawm ib tug Bush, koj tau txais 200 tej daim. Ntawm cov hoob kawm, nyob rau hauv kev xyaum, tsis yog txhua txhua ntawm cov nroj tsuag yuav muab ib tug ruaj khov tawm los, ces tus gardeners tsis muab cov txiv pos nphuab muab nyob rau hauv xws li ib tug pace. Tab sis lub scale yog impressive.
Siv tag nrho cov ntawm cov nroj tsuag tawm hom kev kawm, cov neeg tau txais lawv txhais tes tau los tswj cov pejxeem ntawm tej hom, uas tso cai rau kom daws tau qhov teeb meem ntawm cov khoom noj tshee loj hlob tib neeg.