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Prispevek k otazce doznivani poklesu po zastaveni tezby v Ostravske casti OKR

100%

Schenk J. , Novak J.

tom T. 9, z. 2/1

477-485

Referat obejmuje problemy wpływów eksploatacji podziemnej i ochronę środowiska. Analizuje się przebieg osiadań w czasie w ostrawskiej części OKR, zwłaszcza fazę wygasania obniżeń. Referat zawiera przykłady wyników periodycznych pomiarów niwelacyjnych na tym obszarze.

The contribution is intended on the problems of the mining subsidence and the protection of environment. It analyses the time behaviour of mining subsidence in Ostravas' part of OKR first of all the stage of the reverberation of mining subsidence. It is completed with a lot of examples of results of the periodic measurements of elevation in this part of OKR.

Environmental history of the extinct lake Sur (Western Carpathians, Slovakia) during the Late-glacial and Holocene: a multi-proxi approach

80%

Zaekova P. , Potuckova A. , Libor P. , Novak J.

tom 55

nr 1

Comparison of soil amendments to decrease high strength in SE USA Coastal Plain soils fuzzy decision-making analyses

80%

Busscher W. , Krueger E. , Novak J. , Kurtener D.

nr 3

225-231

Effects of root colonization by symbiotic arbuscular mycorrhizal fungi on the yield of pharmacologically active compounds in Angelica archangelica L.

51%

Zitterl-Eglseer K. , Nell M. , Lamien-Meda A. , Steinkellner S. , Wawrosch C. , Kopp B. , Zitterl W. , Vierheilig H. , Novak J.

nr 02

The major effects of arbuscular mycorrhizal fungi (AMF) colonization on plant growth, monoterpenoids and coumarins were determined in two genotypes of angelica (Angelica archangelica L., Apiaceae). Genetically uniform experimental plants were used, which was achieved by in vitro propagation of two genotypes (individual plants). The effects of Glomus mosseae (Funneliformis mosseae, BEG 12), Glomus intraradices (Rhizophagus intraradices, BB-E) and the AMF mixture Symbivit were tested against a negative (without AMF and without additional phosphorus) and a positive (KH2-PO4 without AMF) control in five plants per treatment. All in all 50 plants were investigated. Fifteen monoterpenoid and seven coumarin compounds were quantitatively determined in the rhizome and coarse root fractions by means of GC/MS using an internal standard. The sum of the monoterpenoids and coumarins was calculated. Concentrations of compounds rather slightly decreased upon inoculation with AMF when compared to the control. In contrast, biomass increased showing the highest amounts for plants treated with G. mosseae. These results finally caused a marked increase in yield for G. mosseae treated plants compared to the control. Phosphorus treatment led to the lowest yield with significant results for coumarins and in particular for osthole compared to G. mosseae treatment. This is also evidence of an independent effect from an increased phosphorus uptake due to root colonization by AMF. In summary, the results showed a marked increase in yield of all investigated compounds through treatment with G. mosseae compared to the control group, even if the level of significance was just barely missed presumably on account of the small sample size.