Cov hlwb archesporial ua haujlwm ncaj qha raws li megaspore niam cell hauv tenuinucellate ovules whereas nws periclinally faib los ua ib qho sab nraud parietal cell thiab sab hauv thawj sporogenous cell hauv crassinucellate ovules. Qhov no kuj ua haujlwm raws li megaspore niam cell.
Archesporium yog dab tsi?
Kev Kho Mob Txhais ntawm archesporium
: lub cell los yog pab pawg ntawm cov hlwb los ntawm cov kab mob ntawm cov niam cov hlwb tsim.
Archesporium nyob qhov twg?
Nyob rau hauv ob qho tib si anthers thiab ovules ntawm angiosperms, cov archesporial hlwb tsim cov archesporium los ntawm txheej ntawm cov hlwb, hu ua cov hlwb hypodermal, nyob tam sim ntawd hauv qab epidermis ntawm anther thiab ovule primordia(Favre-Duchartre 1984).
Micro Sporogenesis yog dab tsi?
Microsporogenesis suav nrog cov xwm txheej uas ua rau tsim cov haploid unicellular microspores Thaum lub sij hawm microsporogenesis cov hlwb diploid sporogenous sib txawv li microsporocytes (pollen niam hlwb lossis meiocytes) uas faib los ntawm meiosis rau tsim plaub haploid microspores.
Archesporium yog dab tsi nws ua rau muaj dab tsi?
Teb tiav: Thaum lub sijhawm hloov pauv hauv angiosperms, archesporium faib. Cov hlwb archesporial no yog cov qauv muaj nyob rau hauv ib qho sporophyte uas tsim cov spores tom qab faib. Kev faib tawm hauv archesporium yuav ua rau tsim ntawm phab ntsa anther thiab sporogenous hlwb
