A CONSEQUENT STUDY TO DIMINISH ANTI·NUTRITIONAL FACTORS (VICINE AND CONVICINE) CONTENT AND PHYSIOLOGICAL RESPONSE OF SOME EGYPTIAN FABA BEAN CULTIVARS TREATED WITH GA3 | ||
| Journal of Plant Production | ||
| Article 11, Volume 30, Issue 10, October 2005, Pages 5927-5940 PDF (4.25 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2005.237517 | ||
| Author | ||
| Amany A. Ramadan, | ||
| Botany Department, National Research Center, Dokki, Giza, Egypt. | ||
| Abstract | ||
| Two pot experiments were carried out during winter seasons 2002 and 2003 at the green house of the experimental station of Botany department, National Research Center, Dokki, Giza, Egypt. The experiments aimed to study the effect of foliar spraying 100 ppm GA3 on 5 varieties of Vicia faba plants (Giza 40, 429, 461, 643 and 674) on growth, photosynthetic pigments, yield, yield components, the contents of toxic constituents (vicine and convicine) in green pods and dry seeds (yielded seeds) at harvest. The contents of protein and amino acids composition of two varieties (Giza 429 and Giza 674) were focused. The results revealed that foliar spraying of 100 ppm GA3 enhanced all the morphological criteria (number of leaflets, number of leaves, number of flowers, leaf area per plant, fresh and dry weight of shoots as well as the yield and its components (plant height, plant weight, number of branches, number of pods, number of seeds and 1 OO-seeds weight in all varieties of Vicia tebe plant. The different varieties of Vicia tebe treated plants showed an increase in chlorophyll a, chlorophyll b, carotenoides and consequently total pigments compared with untreated plants. Marked reductions were observed regarding the toxic glucosides (vicine and convicine) which are the main purpose of the presented work, in response to 100 ppm GA3 of all varieties especially Giza 429 and Giza 674 which showed a marked reduction in green pods and dry seeds. This reduction was increased when the yielded seeds of all varieties re-treated by soaking in 100 ppm GA3 solution. This reduction reached nearly to 53 and 58% in Giza 674 and Giza 429, respectively. Moreover, the amino acids composition of these two varieties increased markedly, except for th ~ sulphur amino acids (cystin and methionine) of Giza 674 in response to GA3 treatment which improved the quality of seeds. Also, the protein content in Vicia teb» seeds of the two markedly responded varieties recorded the highest values under the effect of GA3 foliar spraying. | ||
| Keywords | ||
| Gibberellic acid; Vicia faba; growth; yield; pigments; protein; glucosides; vicine; convicine | ||
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