Qhov txawv ntawm Auxin thiab Gibberellin

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Qhov txawv ntawm Auxin thiab Gibberellin
Qhov txawv ntawm Auxin thiab Gibberellin

Video: Qhov txawv ntawm Auxin thiab Gibberellin

Video: Qhov txawv ntawm Auxin thiab Gibberellin
Video: difference between plant hormones🌿and animal hormones🦕.. 2024, Cuaj hlis
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Auxin vs Gibberellin

Auxin thiab gibberellin yog ob chav kawm ntawm cov tswj kev loj hlob / cov tshuaj hormones pom hauv cov nroj tsuag thiab peb tuaj yeem txheeb xyuas qee qhov zoo sib xws nrog rau qhov sib txawv ntawm lawv. Cog kev loj hlob regulators yog lub luag hauj lwm rau kev loj hlob thiab kev sib txawv ntawm cov hlwb, cov ntaub so ntswg thiab ua raws li tshuaj xa xov nyob rau hauv intercellular kev sib txuas lus. Sib nrug los ntawm auxins thiab gibberellins, cytokinins, abscisic acid (ABA), thiab ethylene kuj suav hais tias yog cov nroj tsuag loj hlob regulators.

Auxin yog dab tsi?

Auxin yog thawj pawg ntawm cov tshuaj hormones cog uas tau tshawb pom los ntawm cov kws tshawb fawb hauv xyoo 1926. Auxin yog tam sim no nyob rau hauv daim ntawv ntawm indole acetic acid (IAA) nyob rau hauv cov nroj tsuag. Txawm li cas los xij, muaj lwm cov tshuaj sib xyaw ua ke kuj pom muaj nyob hauv cov nroj tsuag uas ua haujlwm zoo ib yam li auxins. Ib qho ntawm cov haujlwm tseem ceeb ntawm IAA yog txhawm rau txhawb nqa cell elongation ntawm cov tub ntxhais hluas tua. Thawj qhov chaw ntawm auxin synthesis yog tua apical meristems thiab cov nplooj hluas. Nws tau pom tias kev tsim cov noob thiab txiv hmab txiv ntoo kuj muaj cov qib siab ntawm auxin. Nws yog thauj apoplastically los ntawm parenchyma hlwb thiab translocate los ntawm tracheary ntsiab ntawm xylem thiab sieve ntsiab ntawm phloem. Kev thauj mus los tau paub tias yog unidirectional (polar / basipetal thauj) thiab ib txwm tshwm sim los ntawm lub ntsis mus rau hauv paus.

Qhov sib txawv ntawm Auxin thiab Gibberellin
Qhov sib txawv ntawm Auxin thiab Gibberellin
Qhov sib txawv ntawm Auxin thiab Gibberellin
Qhov sib txawv ntawm Auxin thiab Gibberellin

Lub luag haujlwm tseem ceeb ntawm auxins, luv luv, yog raws li hauv qab no;

• Ntawm qhov tsis tshua muaj siab (10-8– 10-4M) auxin taug kev los ntawm tua apex mus rau thaj tsam elongation ntawm tes thiab txhawb nqa lub qia elongation.

• Txhim kho apical dominance.

• Kev pib ntawm kev tsim cov hauv paus lateral thiab adventitious.

• Fruit development regulation.

• Ua haujlwm hauv phototropism (kev txav raws li lub teeb) thiab gravitropism (tsiv raws li lub ntiajteb txawj nqus).

• Txhawb nqa vascular sib txawv los ntawm kev ua kom cambial thaum lub sijhawm kev loj hlob theem nrab.

• Retards nplooj thiab txiv hmab txiv ntoo abscission.

Apart from 2, 4-dichlorophenoxyacetic acid (2, 4-D), hluavtaws auxin yog siv los ua tshuaj tua kab mob.

Qhov sib txawv ntawm Auxin thiab Gibberellin
Qhov sib txawv ntawm Auxin thiab Gibberellin
Qhov sib txawv ntawm Auxin thiab Gibberellin
Qhov sib txawv ntawm Auxin thiab Gibberellin

Tsis muaj cov tshuaj hormone auxin tuaj yeem ua rau kev loj hlob txawv txav (txoj cai)

Gibberellin (GA) yog dab tsi?

Gibberellins yog ib pab pawg ntawm cov tshuaj hormones cog uas txhawb cov nroj tsuag loj hlob los ntawm cov cell elongation. Gibberellins feem ntau yog tsim los ntawm meristems ntawm apical buds thiab cov hauv paus hniav, cov nplooj me me, thiab tsim cov noob. Kev hloov pauv ntawm gibberellin yog acropetal piv txwv li lub hauv paus mus rau saum.

Auxin vs Gibberellin
Auxin vs Gibberellin
Auxin vs Gibberellin
Auxin vs Gibberellin

Qee lub luag haujlwm tseem ceeb ntawm gibberellins yog raws li hauv qab no;

• Gibberellins txhawb nqa cell elongation ua ke nrog auxins thiab txhawb nqa elongation ntawm internodes.

• Ua kom cov txiv hmab txiv ntoo loj. E.g. grapes tsis muaj noob.

• Tso noob thiab noob dormancy.

• Txhim khu kev loj hlob ntawm cov qoob loo cog qoob loo los ntawm kev txhawb nqa cov enzymes digestive xws li α-amylase uas txhawb nqa cov as-ham.

• Kev hloov pauv ntawm paj kev sib deev thiab kev hloov ntawm cov menyuam yaus mus rau theem neeg laus.

• cuam tshuam rau kev loj hlob ntawm paj paj thiab paj paj ntoos loj hlob.

Auxin vs Gibberellin
Auxin vs Gibberellin
Auxin vs Gibberellin
Auxin vs Gibberellin

Kev cuam tshuam ntawm gibberellic acid ntawm cannabis sprout

Qhov txawv ntawm Auxin thiab Gibberellin yog dab tsi?

Muaj qee qhov zoo sib xws nrog rau qhov sib txawv ntawm ob tus neeg cog kev loj hlob no.

• Auxins muaj cov saw hlau sab hauv nws cov qauv tshuaj thaum gibberellins tsis muaj sab chains.

• Auxins tsuas pom muaj nyob rau hauv cov nroj tsuag siab dua thaum gibberellins pom nyob rau hauv qee cov fungi thiab. E.g. Gibberella fujikuroi.

• Auxin tsheb thauj mus los yog basipetal thaum gibberellin tsheb thauj mus los yog acropetal.

• Auxin tsis txhawb kev faib cell, tab sis gibberellin txhawb kev faib cell.

• Auxin txhim kho apical dominance thaum gibberellin tsis cuam tshuam rau apical dominance.

• Auxin tsis elongate hlwb ntawm genetic dwarf nroj tsuag thaum gibberellins nce internode elongation ntawm genetic dwarf nroj tsuag.

• Auxin tsis muaj lub luag haujlwm hauv kev rhuav tshem cov noob dormancy, tab sis gibberellins pab txhawm rau txhawm rau dormancy ntawm buds thiab noob.

• Ob leeg Auxins thiab gibberellins txhim kho cell elongation.

Raws li kev txiav txim siab, nws yog qhov tseeb tias auxin thiab gibberellins ua ke koom nrog hauv kev loj hlob ntawm cov nroj tsuag thiab tib lub sijhawm ob leeg koom nrog hauv kev ua haujlwm tau teev tseg rau txhua pawg ntawm cov tshuaj hormones.

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