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REPRODUCEREA

REPRODUCEREA. LA PLANTE. Reproducere asexuata Reproducere sexuata – gameti. vegetativa. artificiala. I. Reproducerea asexuata. Reproducerea asexuata vegetativa Diviziunea directa – bacterii, alge. B. Inmugurire. La drojdia de bere – Sacharomyces cerevisiae. La Hidra de apa dulce.

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REPRODUCEREA

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  1. REPRODUCEREA LA PLANTE

  2. Reproducere asexuata • Reproducere sexuata – gameti vegetativa artificiala

  3. I. Reproducerea asexuata • Reproducerea asexuata vegetativa • Diviziunea directa – bacterii, alge

  4. B. Inmugurire La drojdia de bere – Sacharomyces cerevisiae La Hidra de apa dulce

  5. c. Scleroti • Ciuperca parazita Cornul secarei

  6. d. Muguri vegetativi foliari La muschiul - Bryophyllum

  7. e. Stoloni • Ramuri ale plantei-mama care vin in contact cu solul • La fragi

  8. f. Rizomi • Tulpini subterane Iris

  9. g. Tuberculi • Tulpini scurte, ingrosate, bogate in substante de rezerva • cartof

  10. h. Bulbi • Tulpini subterane protejate de frunze carnoase, in care se acumuleaza substante de rezerva • Ceapa, ghiocel, narcisa, lalea, zambila

  11. 2. Reproducerea asexuata artificiala • Butasirea – detasarea unui organ vegetativ sau fragment vegetativ numit butas de pe planta-mama si punerea in conditii prielnice de inradacinare

  12. b. Marcotajul • Separarea organelor vegetative (marcote), de pe planta mama numai dupa inradacinarea lor • Vita de vie

  13. c. Altoirea • Grefarea uni butas (altoi) pe o planta inradacinata (portaltoi) • Pomi fructiferi

  14. d. Micropropagarea • obtinerea de noi plante pornind de la fragmente de organe vegetative (frunze) • Tehnica de clonare a plantelor

  15. 3. Reproducerea asexuata prin germeni specializati • Spori- organe de rezistenta • Muschi, ferigi, ciuperci

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