Qhov sib txawv tseem ceeb ntawm photoperiodism thiab vernalization yog photoperiodism yog cov kev cai ntawm cov nroj tsuag kev loj hlob nyob rau hauv teb rau ntev ntawm hnub los yog hmo ntuj thaum vernalization yog ib tug low-temperature kho uas txhawb paj pib.
Nroj tsuag teb rau qhov sib txawv wavelengths ntawm lub teeb. Photoperiodism yog cov kev cai ntawm kev ua paj thiab lwm yam kev loj hlob ntawm cov nroj tsuag nrog rau qhov ntev ntawm nruab hnub lossis hmo ntuj. Raws li kev tshawb xav photoperiodism, muaj ob hom nroj tsuag xws li cov nroj tsuag hnub luv thiab cov nroj tsuag ntev ntev; ntawm no, flowering yog induced raws li ntev ntawm hnub los yog hmo ntuj. Vernalization yog ib qho txheej txheem tseem ceeb uas siv cov kev kho mob qis kom ceev paj thaum ntxov.
Photoperiodism yog dab tsi?
Photoperiodism yog txheej txheem tswj kev txhim kho ntawm lub cev nrog rau qhov ntev ntawm nruab hnub lossis hmo ntuj. Nws tshwm sim hauv cov nroj tsuag thiab tsiaj txhu. Nyob rau hauv cov nroj tsuag, ib tug ntev ntev ntawm ib hnub los yog hmo ntuj yog yuav tsum tau rau lawv mus paj thiab ces hloov mus rau theem ntawm kev loj hlob ntawm nws lub neej voj voog. Qhov ntev ntawm ib hnub lossis hmo ntuj tau hnov los ntawm ib hom tshwj xeeb ntawm photoreceptor protein hu ua phytochrome.
Daim duab 01: Photoperiodism
Raws li txoj kev xav no, muaj ob hom nroj tsuag sib txawv: cov nroj tsuag hnub luv thiab cov nroj tsuag ntev. Lub paj ntawm cov nroj tsuag luv-hnub tshwm sim thaum hmo ntuj ntev tshaj qhov txheeb ze qhov pib ntawm photoperiod. Hauv lwm lo lus, qhov tshwm sim no tshwm sim vim qhov poob ntawm hnub ntev hauv qab ib qho kev qhia tshwj xeeb. Rice yog ib qho piv txwv ntawm cov nroj tsuag luv luv.
Ntau hnub cog paj thaum hmo ntuj poob qis dua qhov pib ntawm lub sijhawm photoperiod. Qhov ntawd txhais tau tias, ntev-hnub cov nroj tsuag paj thaum hnub ntev nce siab tshaj qhov tseem ceeb ntawm qhov pib. Cov nroj tsuag zoo li spinach thiab barley yog cov piv txwv ntawm cov nroj tsuag ntev ntev.
Vernalization yog dab tsi?
Vernalization yog ib qho kev kho mob uas tsis tshua muaj kub uas ua rau thiab txhawb kev tawg thaum ntxov hauv cov paj ntoo. Nyob rau hauv qhov tseeb, nws yog ib tug ntev, qis-kub kev kho mob ua rau cov nroj tsuag tua apex. Nws thiaj li shortens lub vegetative theem ntawm cov nroj tsuag thiab pab kom cov txiv hmab txiv ntoo teem thiab tawm los. Tsis tas li ntawd, vernalization txhim kho cov nroj tsuag tiv thaiv kom txias txias. Yog li ntawd, lub caij ntuj no ntau yam tuaj yeem hloov mus rau hauv lub caij nplooj ntoos hlav ntau yam siv qhov kev kho mob no. Vernalization kuj ua rau cov nroj tsuag tiv taus cov kab mob fungal.
Tsis tas li ntawd, cov txheej txheem no yog ib qho kev xaiv zoo tshaj plaws hauv horticulture thaum grafting a vernalized tua apex nrog cov uas tsis yog-vernalized. Ntxiv mus, vernalization yog ib txoj hauv kev txhim kho qoob loo. Nws txo tus nqi ntawm cov qoob loo ntau lawm. Nws kuj pab txhawb kev loj hlob ntau dua ib qho qoob loo hauv tib lub caij.
Daim duab 02: Vernalization
Ntau yam cuam tshuam rau kev ua haujlwm ntawm cov txheej txheem vernalization. Cov no suav nrog hnub nyoog ntawm cov nroj tsuag, muaj cov pa oxygen, lub zog qhov chaw, lub sijhawm ntawm kev kho mob khaub thuas thiab dej. Yog li, raws li cov xwm txheej no, feem pua ntawm cov paj tuaj yeem hloov pauv. Gibberellin yog ib qho ntawm cov tshuaj hormones cog uas tuaj yeem hloov cov txheej txheem no.
Dab tsi zoo sib xws ntawm Photoperiodism thiab Vernalization?
- Photoperiodism thiab vernalization yog cov txheej txheem physiological hauv cov nroj tsuag.
- Lawv tseem ceeb rau txoj cai ntawm paj.
- Nroj tsuag cov tshuaj hormones kho ob txoj kev.
- Ob leeg no muaj kev ua liaj ua teb.
Qhov txawv ntawm Photoperiodism thiab Vernalization yog dab tsi?
Photoperiodism yog cov kev cai ntawm cov nroj tsuag kev loj hlob nyob rau hauv teb rau ntev ntawm hnub los yog hmo ntuj thaum vernalization yog ib tug txias kev kho mob uas induces lub flowering thiab txo lub vegetative theem ntawm cov nroj tsuag. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm photoperiodism thiab vernalization. Tsis tas li ntawd, lwm qhov sib txawv tseem ceeb ntawm photoperiodism thiab vernalization yog qhov photoperiodism feem ntau yog txheej txheem ntuj, thaum vernalization yog kev kho mob. Tsis tas li ntawd, qhov ntev ntawm nruab hnub thiab hmo ntuj ua lub luag haujlwm tseem ceeb hauv photoperiodism thaum qhov txias txias yog qhov tseem ceeb hauv vernalization.
Summary – Photoperiodism vs Vernalization
Ob qho tib si photoperiodism thiab vernalization yog qhov tseem ceeb rau kev pib paj. Photoperiodism yog cov lus teb ntawm cov nroj tsuag rau qhov ntev ntawm lub teeb thiab tsaus ntuj. Qhov tseem ceeb tshaj plaws, qhov pib ntawm flowering yog tshwm sim los ntawm photoperiodism. Ntawm qhov tod tes, vernalization yog kev kho mob khaub thuas uas txhawb nqa thaum ntxov flowering hauv angiosperms. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm photoperiodism thiab vernalization.
