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Articles by Aml E.A. El-Saidy
Total Records ( 3 ) for Aml E.A. El-Saidy
  Thanna H.A. Abd El-Kareem and Aml E.A. El-Saidy
  This study was designed to assess the impact of normal and water stress conditions on yield and quality of grain and seed of eight wheat genotypes and selection criteria for identifying drought tolerant in wheat bread genotypes. So, field and laboratorial experiments were conducted during 2008/10 seasons. The results indicated that water stress significantly decreased almost the studied traits. The lowest decrease of both seedling length and biological yield was produced from Sakha 93 and line 2, respectively. The genotypes 6, 7 and Sakha 93 gave the highest increase in phenols content. While, the others lines reflected the highest increase in proline content. Lines 3, 7, 6 and 2 showed highest increase in oil content. The value of Phenotypic Coefficient of Variability (PCV) was higher than Genotypic Coefficient of Variability (GCV) for growth, yield and its components characters under both conditions. Under water stress, high heritability (b.s.) produced for plant height, number of kernels/spike, 1000-kernel weight and grain yield. Also, 1000-kernel weight, number of spikes m-2 and proline accumulation had highly and significant positive correlation with grain yield. While under normal conditions, grain yield had highly significant negative and positive correlation with days to maturity and plant height, respectively. In general, the high proline and phenols accumulation and number of spikes m-2, 1000-kernel weight and grain yield were recognized as beneficial drought tolerance indicators and may be used as selection criteria in wheat breeding program. Also, planting the genotypes 1, 2, 5 and Sakha 93 may be considered the best parents for drought recovering ability and can be crossed to produce new crosses with desirable characters related to drought tolerance.
  Aml E.A. El-Saidy and K.M. Abd El-Hai
  Background and Objective: This study focuses on finding compounds that are safe to humans and environment, such as propionic and acetic acids that may provide an alternative control of seed-borne pathogens and decrease seed deterioration during storage. The objectives of this study were to reduce sunflower seed deterioration and improve the viability of sunflower seed using environmentally safe organic acids. Materials and Methods: Propionic and acetic acids were applied on sunflower seed at different concentrations under laboratory conditions during different storage periods. After 6 months storage period, the viability of sunflower seed as well as morphological and physiological characteristics of seedlings were evaluated under greenhouse conditions. Laboratory experiment was conducted in a factorial completely randomized design and randomized complete block design for greenhouse experiment. Results: Propionic and acetic acids at different concentrations showed inhibitory effects on the presence of different fungal genera in all storage periods. Propionic acid was most effective followed by acetic acid. Increasing storage periods from 0-6 months significantly decreased germination percentage, germination energy, seedling characters, survived healthy seedlings and seed oil and protein percentages but dead and rotted seeds, as well as rotted seedlings were increased. Treating sunflower seeds with propionic acid (100%) improved germination criteria, seedling characters and seed chemical characters as well as survival seedlings and minimized the dead seeds, rotted seeds and rotted seedlings as compared with the control under all storage periods. Under greenhouse conditions, the maximum growth parameter and physiological characters (chlorophylls a, b, carotenoids and total phenols) were recorded from seed treated with 100% propionic acid after 6 months of storage. Conclusion: It may be concluded that propionic and acetic acids vapors can have considerable fungicidal activity against sunflower pathogens and improve seed viability. Therefore, it is recommended using 100% propionic acid to reduce deterioration and seed-borne pathogens of sunflower under storage conditions.
  Aml E.A. El-Saidy , S. Farouk and H.M. Abd El-Ghany
  A laboratory study was conducted to evaluate the effect of seed priming using different priming agents with different concentrations (KNO3, Polyethylene Glycol (PEG 6000), ascorbic acid, α-tocopherol, folic acid and seaweed extract) and hydropriming compared with unprimed seed on seed and seedling vigor of two sunflower (Helianthus annuus L.) cultivars i.e., Sakha 53 and Giza 102 during 2009 season. Also, field experiments were carried out to investigate the influence of the best concentration selected of each priming treatment from laboratory experiment on yield, its components and quality of the same two sunflower cultivars during 2009 and 2010 seasons. In most cases, seed priming treatments reduced the Mean Germination Time (MGT), increased Germination Percentage (GP), Germination Energy (GE) and Germination Index (GI) and improved Seedling Length (SL) and Seedling Dry Weight (SDW) in both cultivars under laboratory conditions. Data analysis in the field experiment observed that Sakha 53 significantly surpassed Giza 102 in yield, its components and seed oil percentage. While, Giza 102 surpassed Sakha 53 in seed protein content. The highest values of capitulum diameter, 100-seed weight and seed yield/ha were observed by the application of 75 mg L-1 ascorbic acid in both seasons. Also, the highest values of seed yield/plant and seed oil and protein% produced from seed primed with 15 mg L-1 folic acid in the second season. Sakha 53 was better than Giza 102 as an oil source because of its highest content of oleic acid and unsaturated fatty acids percentages. It may be concluded that seed priming agents can be used for improving the germination and seedling vigor of sunflower seeds. In addition, planting Sakha 53 cultivar and seed primed with 75 mg L-1 ascorbic acid or 15 mg L-1 folic acid can achieve high yield and oil quality of sunflower. So, seed priming can be used as a beneficial method to improve seed performance and plant traits of sunflower.
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