.

0 (hodnocen0 x )

(2) Půjčeno:2x 

BK

1st ed.

Brno : Masaryk University, 1998

121 s. : il.

ISBN 80-210-1781-3 (brož.)

Folia Facultatis scientiarium naturalium Universitatis Masarykianae Brunensis. Biologia ; [vol.] 97

Bibliografie: s. 101-121.

Rostliny - nitridy - hledisko ekologické - studie

Rostliny - nitridy - hledisko fyziologické - studie

000078780

CONTENT // (KjfccJ aINTRODUCTION AND PROBLEMATIC ’Ш/уч/ ckti if c*-’ з tieSOIL NITROGEN AND ITS TRANSFORMATIONS N itrific iqn oce es 1’/{лЛо.с л. fffff // Nitrate accumulation, leaching and pollution of ground water // ЖГ*. . WSMH) - ’/ чгй.. // Nitrate removal in sea // ОўАІ’. / ІЛСУ-.Т’Г’Л «V СЛЈ/ѕнЅЧ* // Regulation óf’ŇÓЇ uptake by pliloem-translocated amino acids Some other metabolic regulations Nitrate assimilation pathway Оз Lo-> сОмЈи* // Regulation of nitrate reductase ugúfUaX* // Regulation of nitrate reductase by nitrate Light regulation of nitrate reductase Transgenic regulation of nitrate reductase // Nitrate regulates carbon assimilation // ’Рллі £лѵ, <*_ cm ZéciO- О/ п-ооЈси-UPTAKE AND ASSIMILATION OF AMMONIUM // Ammonium assimilation pathway Cwio // Concentration of ammonium in plant tissues // Sensitivity of plants to NHf // Acidification connected with NHf assimilation // Ammonium metabolization is connected with carbohydrate // supplementation // Ammonium metabolization and dark CO2 fixation Ammonium participation on the regulation of carbon flow // Object of experiments // MATERIAL AND METHODS a // c*- Ллп&јј/лВѕ // RESULTS AND DISCUSSION // Uptake relations between N-ions and water // Uptake rate of N-ions at different N levels // Nitrate and ammonium accumulation in experimental plants // Changes of pH values of nutrient solutions during NO3 and NH/ // uptake // 6 // Changes of cation contents

in experimental plants 56 // Growth changes of experimental plants 58 // Changes in respiration processes 61 // Changes in TNS content 62 // Nitrogen utilization by experimental plants 63 // Differences in N use efficiency by experimental plants 66 // Effect of nitrate and ammonium on photosynthetic processes 72 // Effect of NO3 and NHf on photosynthetic dry matter increment 72 // Effect of NО/ and NHf on radiation use efficiency for biomass production in maize and sunflower - 76 // Effect of NO3 and NH4+ on photosynthetic apparatus in pea and maize 79 // Effect on photoinhibition 79 // Effect on leaf pigments content 85 // Effect on PE PC activity 88 // Possible causes of ammonium toxicity in pea plants 90 // Some conclusions important for further study and practical use 94 // SUMMARY 96 // REFERENCES 101