2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Photoperiod cuam tshuam rau kev yug me nyuam hauv lub caij nyoog yug me nyuam, ob qho tib si nroj tsuag thiab tsiaj txhu. … Nyob rau hauv cov tsiaj photoperiod cuam tshuam rau lub caij yug me nyuam los ntawm kev hloov hauv melatonin secretion los ntawm lub caj pas pineal. … Nws tshwm sim hauv cov nroj tsuag thiab tsiaj txhu. Nws raug suav tias yog cuam tshuam rau kev loj hlob thiab kev loj hlob ntawm lub cev.
photoperiod cuam tshuam li cas rau kev tsim tawm?
Ntau zaus kev tsim tawm yog tshwm sim los ntawm tseem ceeb photoperiod. Hauv ntau tus txiv neej tsiaj, testis loj yog cuam tshuam los ntawm photoperiod. … Thaum lub sijhawm photoperiod ntev dua 12.5 teev, cov noob qes loj (testicular recrudescence). Poj niam hamsters muaj ib hnub tseem ceeb zoo sib xws kom lub voj voog yug me nyuam ntawm ob qho tib si sib deev coincide.
Photoperiodism cuam tshuam li cas rau kev loj hlob ntawm cov nroj tsuag?
Photoperiodism cuam tshuam flowering los ntawm inducing tua los tsim floral buds es tsis txhob ntawm nplooj thiab lateral buds. Qee lub sij hawm luv luv facultative nroj tsuag yog: Kenaf (Hibiscus cannabinus)
photoperiod cuam tshuam dab tsi?
Photoperiodism, ua haujlwm lossis kev coj tus cwj pwm ntawm lub cev rau kev hloov ntawm lub sijhawm nyob rau txhua hnub, raws caij nyoog, lossis txhua xyoo ntawm lub teeb thiab tsaus ntuj. Cov tshuaj tiv thaiv photoperiodic tuaj yeem kwv yees tau zoo, tab sis qhov kub thiab txias, khoom noj khoom haus, thiab lwm yam ib puag ncig kuj hloov kho lub cev cov lus teb.
Cov kab mob dab tsi cuam tshuam nrog photoperiod?
Photoperiodicity cuam tshuam rau kev ua haujlwm ntawm kev ua me nyuamnyob rau hauv ntau hom, suav nrog ntau hom freshwater thiab marine fishes (Crim, 1982; Peter, 1982), noog (Wingfield li al., 1997), thiab nas (Heideman thiab Sylvester, 1997)..
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.
Puas rosette puas cuam tshuam rau lwm cov nroj tsuag?
Vim tias rosette tau yooj yim coj mus rau hauv thaj chaw tshiab thaum cov nroj tsuag muaj kab mob raug xa mus rau cov neeg cog qoob loo lossis cov chaw ua vaj tsev, txhua qhov chaw uas cov roses loj hlob zoo li yuav muaj kev pheej hmoo. Rose rosette cuam tshuam rau qia, nplooj thiab paj ntawm cov nroj tsuag.
Puas tsis cuam tshuam cuam tshuam txog kev ywj pheej?
Cov lus tsis sib xws thiab independent yuav raug siv sib hloov ua lus Askiv, tab sis lawv tsis yog lus piv txwv hauv lej. Independent random variables are uncorrelated, but uncorrelated random variables tsis yog ib txwm ywj siab. Puas yog qhov tsis muaj kev cuam tshuam ib txwm muaj kev ywj pheej?
Puas yog kev yug me nyuam hauv cov nroj tsuag?
Thiab koj puas paub tias cov nroj tsuag tseem tuaj yeem reproduce asexually? Nroj tsuag yog cov muaj sia nyob. Qhov ntawd txhais tau tias lawv yuav tsum tau yug dua tshiab thiaj li yuav kis tau lawv cov noob rau cov tiam tom ntej. Nroj tsuag tuaj yeem tsim cov xeeb ntxwv los ntawm kev sib deev lossis kev sib deev.
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.
