Some studies on the effect of putrescine, ascorbic - Ozean ...
Some studies on the effect of putrescine, ascorbic - Ozean ...
Some studies on the effect of putrescine, ascorbic - Ozean ...
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Total free amino acids:<br />
The results recorded in Table (3) and fig.(4) showed that spraying Antirrhinum majus plants with<br />
different amino acids treatments caused a significant increase in <strong>the</strong> c<strong>on</strong>tent <strong>of</strong> total free ami<strong>on</strong> acids in<br />
leaves. Applicati<strong>on</strong> <strong>of</strong> <strong>the</strong> high phenylalanine c<strong>on</strong>centrati<strong>on</strong> (100 ppm) was <strong>the</strong> most <strong>effect</strong>ive<br />
treatment in producing <strong>the</strong> highest values, followed by tryptophan <strong>of</strong> <strong>the</strong> rate <strong>of</strong> 100 ppm. The<br />
increase in <strong>the</strong> c<strong>on</strong>tent <strong>of</strong> total free amino acids as a result <strong>of</strong> <strong>the</strong> tryptophan treatments may be<br />
attributed to its c<strong>on</strong>versi<strong>on</strong> <strong>of</strong> to IAA, as stated by Phillips (1971). Fur<strong>the</strong>rmore, <strong>the</strong> combinati<strong>on</strong><br />
between <strong>the</strong> two amino acids were almost positive for <strong>the</strong> c<strong>on</strong>tent <strong>of</strong> <strong>the</strong> total free amino acids.<br />
Tryptophan at 100 ppm + phenylalanine at 100 ppm gave <strong>the</strong> highest values <strong>of</strong> <strong>the</strong> total free amino<br />
acid.<br />
Our results are in agreement with <strong>the</strong> findings <strong>of</strong> Harridy (1986) <strong>on</strong> Catharanthus roseus L and Abou<br />
Dahab and Abd El-Aziz (2006) <strong>on</strong> Philodendr<strong>on</strong> erubescens.<br />
Hence, it could be recommended that treatment <strong>of</strong> Antirrhinum majus plants with tryptophan and<br />
phenylalanine (especially at <strong>the</strong> c<strong>on</strong>centrati<strong>on</strong> <strong>of</strong> 100 ppm) had a beneficial <strong>effect</strong> growth and chemical<br />
c<strong>on</strong>stituents.<br />
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