Cov txheej txheem:

Lub sij hawm cog qoob loo txhais li cas?
Lub sij hawm cog qoob loo txhais li cas?

Video: Lub sij hawm cog qoob loo txhais li cas?

Video: Lub sij hawm cog qoob loo txhais li cas?
Video: Koos loos 2024, Lub rau hli ntuj
Anonim

Kev cog qoob loo , cov noob tawm, cov noob, lossis lwm lub cev ua me nyuam, feem ntau yog tom qab lub sij hawm ntawm dormancy. Kev nqus dej, sijhawm dhau mus, ua kom txias, ua kom sov, muaj cov pa oxygen, thiab pom lub teeb tuaj yeem ua haujlwm tag nrho hauv kev pib txheej txheem.

Yooj yim li ntawd, 3 theem ntawm kev cog qoob loo yog dab tsi?

Cov txheej txheem noob germination

  • Kauj Ruam 1: Ua kom tsis muaj dej: dej puv cov noob.
  • Kauj Ruam 2: Cov dej ua kom muaj cov enzymes uas pib cog tsob ntoo.
  • Kauj Ruam 3: Cov noob cog hauv paus kom nkag tau dej hauv av.
  • Kauj Ruam 4: Cov noob loj hlob tua uas loj hlob ntawm lub hnub.
  • Kauj Ruam 5: Cov tua loj hlob nplooj thiab pib photmorphogenesis.

Tsis tas li, dab tsi yog cov theem ntawm kev cog noob? Xws li tsib qhov hloov pauv lossis cov kauj ruam tshwm sim thaum noob germination yog: (1) Imbibition (2) Kev ua pa (3) Cov teeb pom kev ntawm Noob germination (4) Mobilization ntawm Reserves thaum lub sij hawm Noob germination thiab Role of Kev loj hlob Regulators thiab (5) Kev loj hlob ntawm Embryo Axis rau hauv Seedling.

Hauv qhov no, germination teb yog dab tsi?

Kev cog qoob loo yog txheej txheem uas lub cev loj hlob los ntawm cov noob lossis cov qauv zoo sib xws. Qhov piv txwv feem ntau ntawm kev loj hlob yog lub sprouting ntawm ib tug yub los ntawm ib tug noob ntawm angiosperm los yog gymnosperm.

Kev cog qoob loo hauv cov lus yooj yim yog dab tsi?

Kev cog qoob loo tshwm sim thaum cov noob lossis noob pib loj tuaj. Nws yog ib lo lus siv nyob rau hauv botany. Thaum ib tug spores los yog noob germinates, nws tsim ib tug tua los yog yub, los yog (nyob rau hauv cov ntaub ntawv ntawm fungi) ib tug hypha. Biology ntawm spores txawv ntawm cov noob.

Pom zoo: