نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکترا، گروه کشاورزی، واحد اسلامشهر، دانشگاه آزاد اسلامی، اسلامشهر، ایران
2 استادیار گروه کشاورزی، واحد اسلامشهر، دانشگاه آزاد اسلامی، اسلامشهر، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
After cereals, oilseeds are considered as the second food reserves in the world, and due to their high adaptability to environmental conditions, they are widely distributed throughout the world (Arribas, 2014). Today, among the three leading oilseed products including sunflower, soybean and rapeseed, sunflower (Helianthus annuus) is known as the main source of high quality edible oil due to its high stability against oxidation and the presence of high amounts of unsaturated fatty acids. Linoleic and oleic have high nutritional value (Izquierdo and Aguirrezábal, 2008; Pal et al., 2015).
Due to the fact that soybean is one of the plants that strongly reacts to the length of the day, therefore, finding suitable genotypes and determining the appropriate period of cultivation in the region according to the type of soybean variety is one of the necessities of planting this product. The selection of cultivars for the maximum utilization of factors affecting growth is one of the necessary managements to improve soybean performance. Two-thirds of the world's food production occurs through agriculture under drought stress conditions (Rost and Gerten, 2010).
Materials And Methods
This research was carried out during the two crop years of 2017 and 2018 in the farm of the Faculty of Agriculture of Tarbiat Modares University, located 17 km from the Tehran-Karaj highway. The height of the test site is 1215 meters above sea level, with a longitude of 51 degrees and 8 minutes east and a latitude of 35 degrees and 43 minutes north. The average temperature and annual rainfall in the region are 34.5 degrees Celsius and 247.4 mm, respectively, according to meteorological statistics.
In order to prepare the land, first, the land in question was plowed with a reversible plow in the fall, then in order to crush the clods and soften the land, disking was done twice and vertically in March. It was done in 2017 and 2018. A trowel was used to level the ground. Then, the soil was compacted in the form of piles and the distance between each pile was 60 cm.
Results and discussion
According to the results of the data variance analysis table, plant height was significantly under the main effects of amino acid foliar spraying (P<0.05), irrigation regime and the interaction of year in irrigation regime (P<0.01), but the reaction It did not show significance compared to year and other double and triple interaction effects
The results showed that by spraying the plants with amino acids, the height of the soybean plants increased significantly compared to the control, and among the amino acids, commercial amino acid (91.77 cm) and cysteine (91.06 cm) had the greatest effect on They had plant height, although they were not significantly different from other amino acids. With foliar spraying of distilled water, the height of the plant showed a significant increase compared to the control
According to the results of the data variance analysis table, the leaf area of each soybean plant was significantly (P<0.01) under the main effects of irrigation regime, amino acids and double interaction effects (except year in irrigation regime), but the significant reaction Dari did not show a triple interaction effect with respect to year
Conclusion
The results showed that plant height, fresh and dry weight of leaves and stems, fresh and dry weight of pods, leaf area index, number of pods per plant, number of seeds per pod, number of seeds per plant, and seed yield They showed a significant decrease compared to optimal irrigation. Spraying amino acids had a positive increasing effect on morphological traits. The three interaction effects of the year in the irrigation regime in amino acids had a significant effect only on the characteristics of stem wet weight and pod dry weight. With the reduction of irrigation to the level of severe under-irrigation, the grain yield decreased by 16.26% and was significant compared to full irrigation. Valine and cysteine amino acids had the most significant positive effect on seed yield
کلیدواژهها [English]
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