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Regulation of in vitro androgenesis of tobacco nicotiana tabacum cultivar samsun relationship between concentration of iron ions and kinetin


, : Regulation of in vitro androgenesis of tobacco nicotiana tabacum cultivar samsun relationship between concentration of iron ions and kinetin. Biochemie und Physiologie der Pflanzen (BPP) 174(9): 752-760

Studying tobacco anthers (N. tabacum L. cv. 'Samsun') cultured on the media containing 0-30 .mu.M FeEDTA we have recorded the development of globulin embryoids only, while on the media with 40-150 .mu.M complete plants occurred. The threshold concentration of 40 .mu.M inducing transformation of the globular embryoids into plants was the same both in light and dark. Darkening of the anthers was directly proportional to FeEDTA concentration of the medium. The effect of FeEDTA was in all cases superior to that of kinetin, both at the levels of anthers and isolated embryoids. Frequency of occurrence of embryogenic anthers on the media without FeEDTA and their colour were not influenced by kinetin. The high kinetin concentration (10 mg/l) induced a secondary multiplication of androgenic plants. The relationship between morphogenetic effects of Fe and developmental stages of embryoids, activation of their photosynthetic apparatus and respiration is discussed.

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Related references

Havranek P.; Vagera J., 1979: Regulation of in vitro androgenesis in tobacco nicotiana tabacum cultivar samsun through iron free media. Globular embryoids were continually produced in anther cultures of (N. tabacum L. cv. Samsun) from the pool of resting microspores if the Fe-free medium was used. The supplement of Fe stopped the development of fresh early embryoids still inducing...

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Vagera, J.H.vranek, P., 1982: In vitro regulation of androgenesis by iron ions and chelate: a common property of two androgenic species (Nicotiana tabacum L. and Datura innoxia Mill.) Tobacco. Biologia plantarum4(4): 282-289

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