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Morfo-Anatomie vegetala - UBM :: Departamentul de Chimie-Biologie

Morfo-Anatomie vegetala - UBM :: Departamentul de Chimie-Biologie

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ï La Triticum aestivum WXOSLQD DUH XUPăWRDUHOH ˛esuturi:<br />

ï Epi<strong>de</strong>rma unistratificat„ i silicifiat„ este prev„zut„ cu stomate,<br />

dispuse Ón ortostihuri Ón dreptul cordoanelor <strong>de</strong> ˛esut asimilator.<br />

ï Scoar˛a este alc„tuit„ dintr-o zon„ pluristratificat„,<br />

sclerenchimatic„ Ón care se g„sesc cordoane <strong>de</strong> ˛esut clorofilian.<br />

Endo<strong>de</strong>rma lipse te.<br />

ï Cilindrul central, <strong>de</strong> tip atactostel este lipsit <strong>de</strong> periciclu.<br />

Fasciculele colateral Ónchise sunt dispuse pe dou„ cercuri<br />

concentrice. Cele externe sunt mai mici, Ónglobate complet Ón<br />

sclerenchim, iar cele mai mari, interne, au c‚te dou„ arcuri <strong>de</strong><br />

sclerenchim. Structura fasciculelor este i<strong>de</strong>ntic„ cu cea <strong>de</strong> la<br />

porumb.<br />

ï Œn centru se g„se te o lacun„ medular„ <strong>de</strong> origine rexigen„.

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