Cucurbic Acid Related Metabolites of the Plant Growth Regulator Dihydrojasmonic Acid in Barley (Hordeum vulgare)1

1991 ◽  
Vol 187 (6) ◽  
pp. 401-408 ◽  
Author(s):  
Angelika Meyer ◽  
Dieter Gross ◽  
Jürgen Schmidt ◽  
Einar Jensen ◽  
Sabine Vorkefeld ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator

Metabolism of the Plant Growth Regulator (E)-[3H]2-Ethylhex-2-enoic Acid in Hordeum vulgare

1986 ◽  
Vol 41 (1-2) ◽  
pp. 141-147 ◽  
Author(s):  
Bernd Schneider ◽  
Horst-Robert Schütte ◽  
Alfred Preiss
Keyword(s):  
Nmr Spectroscopy ◽  
Hordeum Vulgare ◽  
Plant Growth ◽  
Growth Regulator ◽  
Nutrient Medium ◽  
Plant Growth Regulator ◽  
Time Course ◽  
Enoic Acid ◽  
H Nmr ◽  
Time Periods

The metabolism of (E)-[3H]2-ethylhex-2-enoic acid (EHA) was studied in excised seedlings of barley (Hordeum vulgare). It was rapidly taken up from the nutrient medium. The metabolites, isolated by extraction with methanol, separated and purified by TLC and HPLC, were identified by enzymatic, chemical, and spectrometric methods, especially 1H-NMR spectroscopy. The time course of metabolism during 6 , 12, 24, 48, and 72 h is presented, indicating interconversation reactions. A rapid conjugation with glucose was observed, decreasing in concentration again after longer time periods in favour of disaccharide esters, higher conjugates, and a hydroxylation product which was present in free and conjugated form.

THE EFFECT OF A SEAWEED EXTRACT CONTAINING CYTOKININ ON THE GROWTH AND YIELD OF BARLEY

1990 ◽  
Vol 70 (4) ◽  
pp. 1163-1167 ◽  
Author(s):  
J. S. TAYLOR ◽  
K. N. HARKER ◽  
J. M. ROBERTSON ◽  
K. R. FOSTER
Keyword(s):  
Hordeum Vulgare ◽  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Field Conditions ◽  
Seaweed Extract ◽  
Growth And Yield ◽  
Hordeum Vulgare L ◽  
Beneficial Effects ◽  
Seaweed Extracts

A cytokinin-containing seaweed extract, Nitrozyme™ (Nitrozyme1), was tested under field conditions over 4 yr for its effects on the growth and yield of barley (Hordeum vulgare L.). In 1986 and 1987, Nitrozyme did not increase yield and had no beneficial effects on growth of Harrington and Bonanza barley. In 1988 and 1989, the effects of Nitrozyme on barley (cv. Leduc) were compared against those of kinetin, a synthetic cytokinin. Neither Nitrozyme nor kinetin had an effect on growth or yield.Key words: Nitrozyme, seaweed extracts, cytokinins, kinetin, plant growth regulator, Hordeum vulgare L.

Amino acid conjugates as metabolites of the plant growth regulator dihydrojasmonic acid in barley (Hordeum vulgare)

1991 ◽  
Vol 10 (1-4) ◽  
pp. 17-25 ◽  
Author(s):  
A. Meyer ◽  
J. Schmidt ◽  
D. Gross ◽  
E. Jensen ◽  
A. Rudolph ◽  
...  
Keyword(s):  
Amino Acid ◽  
Hordeum Vulgare ◽  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Amino Acid Conjugates

Influence of plant growth regulator and rhizobial inoculation on nodulation and soybean nitrogen contant

2007 ◽  
Vol 35 (2) ◽  
pp. 993-996 ◽  
Author(s):  
Sulejman Redžepović ◽  
Sanja Sikora ◽  
Josip Čolo ◽  
Mihaela Blažinkov ◽  
Marija Pecina
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Rhizobial Inoculation

Yield increase and higher flesh firmness of 'Arctic Snow' nectarines both at harvest in Australia and after export to Taiwan following pre-harvest application of ReTain Plant Growth Regulator (aminoethoxyvinylglycine, AVG)

2004 ◽  
Vol 44 (3) ◽  
pp. 343 ◽  
Author(s):  
A. C. Rath ◽  
A. J. Prentice
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Fruit Size ◽  
Yield Increase ◽  
Flesh Firmness ◽  
Ambient Storage ◽  
Class 1 ◽  
Harvest Delay

The effects ReTain Plant Growth Regulator (830 g in 1000 L water/ha) applied to a commercial block of 'Arctic Snow' nectarines 7 days before the first harvest was assessed in relation to harvest delay, fruit size, fruit quality (flesh firmness and brix), as well as the quality of the fruit following export to Taiwan. The untreated block (0.87 ha) and the ReTain-treated block (1.0 ha) were harvested according to the orchard's standard maturation criteria of background colour, size and percent blush colour. Based on picking schedules, the maturation of the ReTain block was delayed by 2.75 days (P<0.05). The fruit continued to grow during this delay and resulted in a 12.3% increase in yield and an increase of 393 packed cartons/ha. There were more (P<0.001) cartons of ReTain-treated fruit packed in grade sizes 69–78 mm diameter and less of smaller size classes (51–66 mm) compared with untreated fruit. The increase in both the number of cartons of class 1 fruit and fruit size on the ReTain block resulted in a Return on Investment (ROI) of 14.7 : 1 with an additional net return of AU$17 655/ha over the untreated block. There was a correlation between fruit size and flesh firmness with larger fruit being firmer than smaller fruit (P<0.001), however, packed ReTain-treated fruit was 3.2 N firmer on average (P<0.001) than packed untreated fruit for all size grades and from all harvests and packs. Brix levels increased (P<0.001) with fruit size but there was no difference (P = 0.568) between ReTain-treated fruit and untreated fruit. Two containers of fruit (early and late picks) were exported to Taiwan. The containers held a temperature of 0.5–2.0°C for the 14–15 day transit time from Australia to Taiwan. ReTain-treated fruit in both containers was 1.7 N firmer (P = 0.022) than untreated fruit upon arrival in Taiwan. After ambient storage (23°C) of fruit from container 1 for 45 h, fruit firmness declined (P<0.001) from an average of 65.7 to 43.2 N and there was no difference (P = 0.826) between treated or untreated fruit. It is concluded that ReTain application to 'Arctic Snow' nectarines can increase financial returns to growers through increased fruit size and quality benefits as well as maintain a higher flesh firmness following export.

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