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2006 | 28 | 6 |
Tytuł artykułu

Analogues of auxin modifying growth and development of some monocot and dicot plants

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Języki publikacji
The dependence of morphogenetic processes in the formation of vegetative and generative organs in spring oilseed rape and barley on exogenously applied physiological analogues of auxin: 2,4-D (2,4-dichlorphenoxyacetic acid), NAA (naphthalene-1-acetic acid), TA-12 (1-[2-chloroethoxycarbonyl- methyl]-4-naphthalenesulfonic acid calcium salt) and TA-14 (1-[2-dimethylaminoethoxicarbonylmethyl]naphtalene chlormethylate) were investigated. The experiments were performed with hypocotyl tissue cultures of oilseed rape and barley microspores in vitro. The auxin analogues applied revealed differences of morphogenetic competence in dedifferentiation-redifferentiation processes that occurred in oilseed rape cultures. TA-12 and TA-14 applied together with NAA and BA (6-benzylaminopurine) caused more int ens ive cal lus growth in comparison with 2,4-D. Rhizogenesis was induced when 2,4-D was substituted by TA-12. Compound TA-14, unlike TA-12, facilitated the appearance and development of cot- ytedons in caltus tissues. Hower the compounds TA-12 and TA-14 have no positive effect in monocot plant - barley anther culture for callogenesis and regeneration in comparison to indole-3-acetic acid (IAA). TA-14 and TA-12 showed similar but not identical auxin properties and demonstrated high efficiency as modt tiers of rape-dicot plant growth and morphogenesis.
Opis fizyczny
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