Abstract
A greenhouse pot experiment was conducted 2023 at the National Research Centre in Dokki, Cairo, Egypt to investigate the impact of proline and glutamic acid on the growth, photosynthetic pigments, and mineral levels of Green Peas plants. The absence of irrigation has a detrimental impact on the growth of Green Peas plants, namely in terms of plant height, number of green leaves and stem, as well as the dry weight of leaves and top. The depressing impact was greater when irrigation was absent during the blossoming stage compared to the filling stage. This statement holds true for the conditions indicated earlier. In general, the utilization of amino acids (namely glutamic and proline) enhanced development characteristics. The application of glutamic acid resulted in greater plant height, leaf count, and dry weight of both stems and tops compared to the effects of proline spraying. The absence of irrigation at any growth stage in the study had no impact on the concentration of Chlorophyll (Ch. A and Ch. A + Ch. B). However, there was a modest effect on the concentrations of carotenoids and total Chlorophyll. Nevertheless, the concentration of (Ch. B) exhibited an increase during the fruiting phase under drought treatment. However, this rise needed to be more substantial to reach a statistically significant level. The ratio of Chlorophyll A to Ch. B increased exclusively during the dry period. The utilization of glutamic acid resulted in the highest levels of Ch.A, Ch.B total chlorophyll concentrations, with just a modest impact on carotenoid levels. In addition, the ratios of carotenoids in Ch. A and Ch. B, as well as the combined ratios of Ch.A and Ch.B exhibited similar reactions.
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