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Action de la 2-thiouracile sur la rhizogenèse dans les boutures de plantules étiolées de tomate

✍ Scribed by Albert Guillot


Publisher
Springer-Verlag
Year
1965
Tongue
English
Weight
395 KB
Volume
67
Category
Article
ISSN
0032-0935

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✦ Synopsis


Influence ot 2-Thiouracil on the Root Formation in Cuttings of Etiolated Tomato Seedlings Summary 1. 2-Thiouracil inhibits hypocotyl growth, adventitious root formation and growth of adventitious roots in cuttings of etiolated tomato seedlings.

  1. The inhibition of the growth of hypoeotyl was reversed totally by uracil and eytosin, but only partially by orotic acid and thymine.

  2. The inhibition of the growth of adventitious roots was reversed by orotie acid, uracil and cytosine, but not by thymine.

  3. The inhibition of adventitious root formation was reversed neither by orotie acid nor by uracil, cytosine, or thymine.

  4. A hypothesis based on data in the literature is proposed to explain this latest result. La n6oformation d'une racine est l'aboutissement d'nne activit6 mitotique intense circonserite ~ eertaines eellules, au tours de laquelle s'organise progressivement un m@rist~me radical typique.


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