Kev piav qhia: Xyoo 1963, Stuart Letham tau muab rho tawm thiab txheeb xyuas qhov sib xyaw hu ua zeatin los ntawm pob kws (Zea mays; pob kws) kernels. Qhov no yog thawj zaug tshwm sim cytokinin los txheeb xyuas, thiab nws siv sijhawm li 40 xyoo kom tau txais kev pom zoo tias cytokinins yog cov khoom tsim los ntawm cov nroj tsuag nws tus kheej.
Qhov twg hauv qab no yog ntuj cytokinins?
thawj hom cytokinin uas tau txheeb xyuas tau ua kom huv los ntawm cov pob kws tsis paub tab thiab muaj npe ' zeatin'. Ob peb lwm cytokinins nrog cov qauv muaj feem xyuam tau paub niaj hnub no. Cytokinins muaj nyob rau hauv tag nrho cov ntaub so ntswg. Lawv muaj ntau nyob rau hauv cov hauv paus hniav, tua apex, thiab cov noob tsis paub tab.
Puas yog cytokinins ib txwm tsim los ntawm cov nroj tsuag?
Ntau cytokinins tshwm sim hauv cov nroj tsuag. Lawv muaj adenine puag thiab tsib carbon isopentenyl sab saw. Ntawm cov no, zeatin, tshwj xeeb tshaj yog trans-zeatin, yog qhov ntau tshaj.
Qhov twg hauv qab no yog piv txwv ntawm cytokinin?
(Science: protein) chav kawm ntawm cov tshuaj cog qoob loo (cov tshuaj hormones cog) ua haujlwm hauv kev txhawb nqa cell faib. Kuj koom nrog hauv kev loj hlob ntawm tes thiab kev sib txawv thiab hauv lwm cov txheej txheem physiological. Piv txwv li: kinetin, zeatin, benzyl adenine.
Natural cytokinin synthesized nyob qhov twg?
Natural cytokinins yog synthesized nyob rau hauv cheeb tsam uas ceev cell divisions tshwm sim zoo li cag apices, tsim tua buds thiab cov txiv hmab txiv ntoo hluas. E.g. zeatin,thawj lub ntuj cytokine tau los ntawm unripe pob kws nplej los yog kernels. Nws tseem tuaj yeem pom hauv txiv maj phaub mis.
