THE ROLE OF AMINO ACIDS ORNITHINE AND PHENYLALANINE IN GROWTH, CHEMICAL CONSTITUENTS AND ALKALOIDAL CONTENTS IN Datura innoxie Mill | ||
| Journal of Plant Production | ||
| Article 14, Volume 28, Issue 2, February 2003, Pages 1261-1268 PDF (5.38 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2003.245521 | ||
| Author | ||
| E. EI. Habba, | ||
| Botany Department, National Research Center, Dokki, Cairo, Egypt | ||
| Abstract | ||
| An experiment was conducted in two successive seasons to study the effect of ornithine and phenylalanine ( 100.200 and 400 ppm) on growth. carbohydrates. pigments and alkaloidal content of Datura innoxle Mill leaves at flowering stage. The highest value of plant height and number of branches or leaves were obtained from plants treated with 200 ppm ornithine and phenylalanine. Plants treated with 400 ppm ornithine and 200 ppm phenylalanine gave the highest value of leaf area and dry weight of leaves. The application of amino acids. omithine and phenylalanine resulted in low levels of soluble as well as, non soluble suqars and total carbohydrate of Oatura leaves as compared to the control. While the same treatment gave the highest level of chlorophyll a and b, whereas carotenoids were decreased due to applications of low concentrations of omithine and phenylalanine. Ornithine and phenylalanine showed a stimulatory effect on leaf chemical composotions such as nitrogen, protein, RNA, DNA and alkaloidal content. The highest values of theses contents were obtained from ornithine at 400 ppm and phenylalanine at 200 or 400 ppm. | ||
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