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)..
