Impact of presowing laser irradiation of seeds on sugar beet properties

2012 ◽  
Vol 26 (3) ◽  
pp. 295-300 ◽  
Author(s):  
E. Sacała ◽  
A. Demczuk ◽  
E. Grzyś ◽  
U. Prośba-Białczyk ◽  
H. Szajsner
Keyword(s):  
Nitrate Reductase ◽  
Sugar Beet ◽  
Laser Irradiation ◽  
Nitrate Reductase Activity ◽  
Dry Matter ◽  
Reductase Activity ◽  
Breeding Program ◽  
Sugar Concentration ◽  
Dry Matter Accumulation ◽  
The Impact

Impact of presowing laser irradiation of seeds on sugar beet propertiesThe aim of the experiment was to establish the influence of biostimulation on the sugar beet seeds. The seeds came from the specialized breeding program energ'hill or were irradiated by the laser in two doses. The impact of the biostimulation was analyzed by determining the nitrate reductase activity and the nitrate, chlorophyll and carotenoids contents in leaves, as well as, the dry matter and sugar concentration in mature roots. The field experiment was established for two sugar beet cultivars. Biostimulation by irradiation and a special seed breeding program energ'hill had a positive influence on some examined parameters (particularly on nitrate reductase activity in Ruveta and in numerous cases on photosynthetic pigments in both cultivars). Regarding the dry matter accumulation and sugar concentration this impact was more favourable for Tiziana than for Ruveta cultivar.

scholarly journals Nitrate reductase activity and oxalate content of sugar-beet leaves.

1972 ◽  
Vol 20 (3) ◽  
pp. 193-198
Author(s):  
F. van Egmond ◽  
H. Breteler
Keyword(s):  
Nitrate Reductase ◽  
Sugar Beet ◽  
Nutrient Solution ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Substantial Effect ◽  
Controlled Environment ◽  
Nitrate N ◽  
Carboxylate Content ◽  
The Difference

Diploid sugar beet was grown in controlled environment at 25/17 deg C in 14-h photoperiods in well aerated, regularly changed nutrient solution containing 6 meq NO3/l. When 6 leaves had been expanded, the total carboxylate content of the oldest leaf (leaf 1) was found to be 5836 meq/kg DM, while that of leaf 6 was only 2312 meq/kg; the difference was mainly due to oxalate content, which was 5236 meq/kg in leaf 1 and 1744 meq/kg in leaf 6. Nitrate-N content was about 50% higher in leaf 1 than in leaf 4. Nitrate-reductase activity fell to very low values as leaves aged. Experiments in which young and old leaf material was mixed, or oxalate at 0-4000 meq/kg DM was added to leaf samples, showed that oxalate had no substantial effect on nitrate-reductase activity. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Changes in nitrate and nitrate reductase levels on restoration of molybdenum to molybdenum-deficient plants

1969 ◽  
Vol 20 (4) ◽  
pp. 635 ◽  
Author(s):  
PJ Randall
Keyword(s):  
Nitrate Reductase ◽  
Nitrate Reductase Activity ◽  
Dry Matter ◽  
Reductase Activity ◽  
Potassium Nitrate ◽  
Response Patterns ◽  
Wheat Leaf ◽  
Plant Test ◽  
Reducing Activity ◽  
The Difference

The effect of molybdenum on nitrate reductase was assessed by incubating wheat leaf fragments with potassium nitrate, with or without molybdenum, under lights supplying 2000 f.c. Enzyme activity was then estimated by measuring the nitrite produced by the fragments and released into the solution during 1 hr in total darkness. Light stimulated the induction of nitrate-reducing activity while darkness was essential to obtain accumulation of nitrite. Molybdenum deficiency in wheat depressed nitrate reductase activity and dry matter yield. Molybdenum caused a rapid increase in nitrate reductase in tissue from deficient plants but had no such effect on tissue from non-deficient plants. The difference in response patterns between deficient and non-deficient plants, induced by molybdenum treatment could form the basis for a plant test for molybdenum deficiency.

Nitrate Reductase Activity of Maize Hybrids and Their Parental Inbred 1

Crop Science ◽  
1966 ◽  
Vol 6 (2) ◽  
pp. 169-173 ◽  
Author(s):  
L. E. Schrader ◽  
D. M. Peterson ◽  
E. R. Leng ◽  
R. H. Hageman
Keyword(s):  
Nitrate Reductase ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Maize Hybrids ◽  
Parental Inbred
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