Qhov sib txawv tseem ceeb ntawm auxin thiab cytokinin yog tias auxin txhawb cov cag cag thaum lub cytokinin inhibits cag cag thiab cov cag tsim sab nraud. Txhawm rau ntxiv rau qhov no, auxin feem ntau yog lub luag haujlwm rau elongation ntawm cov hlwb hauv cov qia thiab cov hauv paus ntsiab lus whereas, cytokinins yog lub luag haujlwm tseem ceeb rau kev faib cell thiab li no, lawv pom nyob rau hauv cov cheeb tsam loj hlob.
Phytohormones tseem hu ua cov tshuaj hormones cog yog cov tshuaj tseem ceeb rau cov nroj tsuag kev loj hlob thiab kev loj hlob. Lawv yog cov organic molecules, thiab lawv ua haujlwm raws li cov cim qhia cov molecules uas tswj cov nroj tsuag kev loj hlob. Muaj tsib hom tshuaj hormones cog: auxin, gibberellin, cytokinin, ethylene, thiab abscisic acid. Yog li, lawv ua haujlwm sib txawv ib leeg thiab ua ke los cuam tshuam cov nroj tsuag kev loj hlob.
Auxin yog dab tsi?
Auxin yog cov tshuaj cog qoob loo muaj zog. Nws tsim nyob rau hauv tsawg concentrations ib txwm los ntawm cov nroj tsuag nyob rau hauv cov hauv paus hniav, buds thiab tua cov lus qhia. Auxin feem ntau yog lub luag haujlwm rau qia elongation. Tsis tas li ntawd, nws tiv thaiv kev loj hlob ntawm lateral buds thiab tswj apical dominance. Gardener trims los yog txiav cov lus qhia ntawm tua. Tom qab ntawd cov nroj tsuag ua bushier vim auxin tsis tsim thiab cov nyhuv ntawm apical dominance yog tsis tswj.
Daim duab 01: Auxin Transport
Ntxiv mus, Auxin tseem ceeb hauv phototropism ib yam nkaus vim tias auxin txav mus rau sab tsaus ntawm cov nroj tsuag thiab ua rau muaj kev faib tawm ntawm tes. Nyob rau hauv lem, nws ua rau curvature ntawm cov nroj tsuag stem ntawm lub teeb. Lwm yam tshaj li cov haujlwm no, auxin yog lub luag haujlwm rau kev txhawb nqa hauv paus kev loj hlob, txhawb kev loj hlob txiv hmab txiv ntoo, kev loj hlob ntawm cov nroj tsuag,
YCytokinin yog dab tsi?
Cytokinin yog ib qho ntawm tsib hom tshuaj hormones cog. Nws txhawb nqa cell faib thiab cell sib txawv. Lawv tshwm sim nyob rau hauv yuav luag txhua cov ntaub so ntswg ntawm cov nroj tsuag. Tab sis lawv muaj ntau nyob rau hauv cov ntaub so ntswg loj hlob xws li hauv paus tip, tua apex, cambium, thiab lub cev tsis paub tab, thiab lwm yam. Lawv yog adenine derivatives.
Daim duab 02: Cytokinin
Cov cag ntoo ua ke cytokinins thiab tom qab ntawd tsim cov cytokinins txav mus rau ntawm lub xylem. Cytokinins txhawb kev tsim cov kab mob sab nraud. Tsis tas li ntawd, nws txhawb kev tsim cov hauv paus lateral, nplooj senescence, morphogenesis, nodule tsim, thiab lwm yam.
Dab tsi zoo sib xws ntawm Auxin thiab Cytokinin?
- Auxin thiab Cytokinin yog cov tshuaj hormones cog.
- Lawv yog tsim nyob rau hauv tsawg concentrations.
- ob leeg yog cov organic molecules.
- Auxin thiab Cytokinin yog lub luag haujlwm rau kev faib cell, elongation, thiab lwm yam.
Qhov txawv ntawm Auxin thiab Cytokinin yog dab tsi?
Tawm ntawm tsib pawg ntawm cov tshuaj hormones cog, auxin thiab cytokinin yog ob hom tseem ceeb uas cuam tshuam rau cell division, cellular expansion, cell differentiation, thiab lwm yam.. Cov ntaub ntawv hauv qab no nthuav tawm cov ntsiab lus ntxiv ntawm qhov sib txawv ntawm auxin thiab cytokinin hauv daim ntawv teev npe.
Summary – Auxin vs Cytokinin
Auxin thiab cytokinin yog cov tshuaj hormones tseem ceeb rau cov nroj tsuag. Ob hom tswj yuav luag txhua yam ntawm cov nroj tsuag kev loj hlob thiab kev loj hlob. Indole acetic acid yog daim ntawv ntau tshaj ntawm auxin thaum cytokinins yog adenine derivatives. Auxin feem ntau yog lub luag haujlwm rau elongation ntawm cov hlwb hauv cov qia thiab cov lus qhia hauv paus. Cytokinins feem ntau yog lub luag haujlwm rau kev faib tawm ntawm tes thiab yog li, lawv muaj nyob hauv thaj chaw loj hlob. Qhov no yog qhov txawv ntawm auxin thiab cytokinin.
