نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده کشاورزی و صنایع غذایی دانشگاه آزاد اسلامی وتحد علوم و تحقیقات تهران ایران
2 استادیار دانشگاه آزاد اسلامی یادگار امام شهر ری
3 استادیار بخش تحقیقات علوم زراعی و باغی مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی لرستان سازمان تحقیقات آموزش و ترویج کشاورزی خرم
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Drought is one of the crises of the country in recent years. In Lorestan province, as in many regions of the country, in addition to reducing the amount of rainfall, its inappropriate distribution and intensity also has a negative effect on the production of crops, including wheat, in rainy conditions. The introduction of cultivars adapted to the rainy conditions of cold regions is being developed, but choosing the most suitable cultivar for each region will help the economy of farmers in the region while increasing production. The aim of this study was to investigate the effects of nitroxin biofertilizers and atrazine antiperspirant on three wheat cultivars Azar 2, Baran and Ohadi.
Materials and Methods In order to investigate the morphological and biochemical response of rainfed wheat cultivars to anti-transpiration and nitrogen biofertilizers, an experiment was carried out in a randomized complete block design with split-factorial plot arrangement with four replications in the cold temperate zone (Kamalvand Khorramabad) in two cropping years 2016-7 and 2017-8. The factor of rainfed wheat cultivar (Azar2, Ohadi and Baran) was in the main plot and anti-transpirant (no application and application of atrazine) and nitrogen biofertilizer (no application, application of azospirillium, application of Azotobacter) as factorial were in sub-plots. Atrazine antiperspirant with a concentration of 400ppm (80% powder and tablet) in two stages, one stage at the end of March and the other at the time before pollination using a 20 liter sprayer and as Guided was used. Morphological traits were measured on 20 cm length of each plot, including plant height, number of spikes per square meter, number of seeds per spike and weight of 1000 seeds on 5 plants. After Bartlett's test, compound variance analysis (two years) was performed for morphophysiological traits and for biochemical traits, simple variance analysis (one year) was performed.
The use of antiperspirant and biofertilizer could improve the characteristics investigated in this research. In the first and second year respectively, Ohadi and Baran cultivars had the highest harvest index with the use of atrazine and azotobacter and the lowest harvest index without the use of antiperspirant and biological fertilizer. By keeping the stomata semi-closed, atrazine reduces transpiration and helps maintain the plant's water content under drought stress conditions, and its application can help increase rain production. The highest amount of seed protein was obtained with the use of Azotobacter, which was not significantly different from the use of Azosprilium. The activity level of antioxidant enzymes decreased with the use of antiperspirant atrazine. In this way, in the climatic conditions of Lorestan province, the cultivation of Azar 2 and Baran cultivars along with the use of atrazine and biofertilizers is suggested.
Keywords: Antioxidant.enzyme, azospirillium, catalase, harvest index, proline
کلیدواژه‌ها [English]
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