Download - REPRODUCEREA
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REPRODUCEREA
LA PLANTE
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I. Reproducere asexuata
II. Reproducere sexuata – gameti
vegetativa
artificiala
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I. Reproducerea asexuata
1. Reproducerea asexuata vegetativa
a. Diviziunea directa – bacterii, alge
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B. InmugurireLa drojdia de bere – Sacharomyces cerevisiaeLa Hidra de apa dulce
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c. Scleroti
Ciuperca parazita
Cornul secarei
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d. Muguri vegetativi foliari
La muschiul - Bryophyllum
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e. Stoloni
Ramuri ale plantei-mama care vin in contact cu solul
La fragi
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f. Rizomi
Tulpini subterane Iris
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g. Tuberculi
Tulpini scurte, ingrosate, bogate in substante de rezerva
cartof
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h. Bulbi
• Tulpini subterane protejate de frunze carnoase, in care se acumuleaza substante de rezerva
• Ceapa, ghiocel, narcisa, lalea, zambila
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2. Reproducerea asexuata artificiala
a. Butasirea – detasarea unui organ vegetativ sau fragment vegetativ numit butas de pe planta-mama si punerea in conditii prielnice de inradacinare
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b. Marcotajul
Separarea organelor vegetative (marcote), de pe planta mama numai dupa inradacinarea lor
Vita de vie
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c. Altoirea Grefarea uni butas
(altoi) pe o planta inradacinata (portaltoi)
Pomi fructiferi
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d. Micropropagarea
obtinerea de noi plante pornind de la fragmente de organe vegetative (frunze)
Tehnica de clonare a plantelor
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3. Reproducerea asexuata prin germeni specializati Spori- organe de
rezistenta Muschi, ferigi, ciuperci