2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Photoperiodic stimulus yog pom los ntawm cov nploojthiab cov tshuaj floral yog tsim nyob rau hauv nplooj uas yog ces translocated mus rau lub apical tip, tom qab ua rau pib ntawm floral primordia.
Photoperiodic stimulus yog dab tsi?
Lub photoperiodic stimulus yog tau txais los ntawm nploojthiab pom meej kis mus rau qhov uas ua kom loj hlob mus rau hauv lub cev cia, xws li tubers thiab qhov muag teev. Cov lus teb ntawm cov nroj tsuag rau photoperiodic stimuli yog ntau thiab ntau haiv neeg.
Qhov twg ntawm cov nroj tsuag perceives lub teeb stimulus rau flowering?
Teb tiav:
Nyob rau hauv cov txheej txheem ntawm flowering, lub photoperiodic stimulus yog perceived los ntawm nplooj ntawm cov nroj tsuag, thiab raws li qhov no, ib tug floral. Cov tshuaj hormones yog tsim nyob rau hauv cov nplooj uas yog ces Translocated mus rau lub apical tip, tom qab ua rau pib ntawm floral primordial.
Qhov twg hauv qab no yog kev txhawb nqa rau lub sijhawm yees duab?
Cov pov thawj sim tau qhia tias qhov kev txhawb nqa photoperiodic hauv cov nroj tsuag tau pom los ntawm pigment phytochrome. Phytochrome yog cov xim photoreversible uas absorbs lub teeb thiab lub paj yog txheej txheem phytochrome-mediated.
Photoperiodic stimulus thiab Vernalisation yog dab tsi?
Lub teeb stimulus hauv photoperiodism tsuas yog tau txais los ntawm nplooj ntsuab. Kev kho mob khaub thuas stimulus yogtau txais los ntawm nplooj, embryo, thiab meristem. Photoperiodism yog kho los ntawm ib qho hypothetical hormone Florigen. Vernalisation yog kho los ntawm ib qho hypothetical hormone vernalin. 2-3 photoperiods txaus rau induce flowering.
Pom zoo:
Nyob rau hauv cov nroj tsuag cov receptor rau ntes photoperiod yog?
Ntau cov paj ntoo (angiosperms) siv cov protein ntau ntawm cov photoreceptor, xws li as phytochrome lossis cryptochrome, kom nkag siab txog kev hloov pauv raws caij nyoog nyob rau hmo ntev, lossis photoperiod, uas lawv coj los ua lub cim rau paj.
Kev ua pa tshwm sim nyob rau hauv cov nroj tsuag nyob qhov twg?
Nyob hauv ib puag ncig ntuj, cov nroj tsuag tsim lawv cov zaub mov kom ciaj sia. Raws li nrog photosynthesis, cov nroj tsuag tau oxygen los ntawm huab cua los ntawm stomata. Kev ua pa tshwm sim nyob rau hauv mitochondria ntawm lub cellnyob rau hauv lub xub ntiag ntawm oxygen, uas yog hu ua "
Nyob hauv cov nroj tsuag cov organic acids yog decarboxylated ntawm?
Reaon: Orgnaic acids yog decarboxylated thaum hmo ntuj. Dab tsi yog qhov photosynthesis adaptation ntawm C4 nroj tsuag thiab CAM nroj tsuag zoo sib xws? Yog vim li cas: Stomata ntawm CAM cov nroj tsuag qhib thaum nruab hnub. Cov nroj tsuag CAM puas siv Rubisco?
Nyob rau hauv vernalisation flowering nyob rau hauv cov nroj tsuag yog?
Vernalization (los ntawm Latin vernus, "ntawm lub caij nplooj ntoos hlav") yoginduction ntawm cov nroj tsuag flowering txheej txheem los ntawm raug rau lub caij txias ntawm lub caij ntuj no, los yog los ntawm ib qho khoom sib npaug.
Cov nroj tsuag sab hauv tsev hauv cov nroj tsuag?
Cov nroj tsuag zoo tshaj plaws hauv tsev muaj xws li hauv qab no: Aglaonema - Nws yog qhov txaus nyiam, zam lub teeb qis, thiab tsis loj hlob sai. Aspidistra - Koj yuav tsum tsis txhob muab dej ntau thiab nws yuav ua rau lub teeb qis. … Succulent - Nco ntsoov tias koj muab lub teeb ci rau lawv.
