بررسی اثر محلول ¬پاشی سلنیوم و تنش خشکی بر روی برخی خصوصیات ذرت رقم Ns640
محورهای موضوعی : توليد محصولات زراعي
فاطمه طاهري
1
(دانش آموخته كارشناسي ارشد گروه زراعت كشاورزي، دانشگاه اروميه – ايران)
کلید واژه: تنش خشکی, ذرت, سلنیوم, محلول¬پاشی,
چکیده مقاله :
به منظور بررسی اثر محلول¬پاشی سلنیوم و تنش خشکی بر روی برخی خصوصیات ذرت رقم Ns640 آزمایشی در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه ارومیه در سال 1392 به صورت اسپلیت پلات در قالب طرح بلوک¬های کامل تصادفی در 3 تکرار اجرا گردید. تیمار¬های آزمایشی شامل چهارسطح محلول¬پاشی سلنیوم (شاهد، 162/0، 243/0 و 324/0 گرم در لیتر) به عنوان فاکتور فرعی و تیمار¬های آبیاری در سه سطح (80 ، 60 و 40 درصد ظرفیت زراعی) به عنوان فاکتور اصلیی بود.نتایج نشان داد كه صفات ارتفاع بوته، وزن هزاردانه، درصد پروتئین، کلروفیل a، کلروفیل b، عملکرد دانه و میزان سلنیوم دانه تحت تاثیر معنی¬دار تیمار¬های سلنیوم و آبیاری قرار گرفتند. عملکرد بیولوژیک تحت تاثیر سلنیوم قرار گرفت ولی تیمار آبیاری تاثیر معنی داری روی این صفت نداشت. بیشترین ارتفاع بوته (246 سانتی¬متر)، درصد پروتئین (31/12 درصد)، عملکرد دانه (8/14678 کیلوگرم در هکتار) به ترتیب از تیمار¬های آبیاری در 80%، 60%،80%ظرفیت زراعی حاصل گردید و از لحاظ تیمار¬های محلول¬پاشی سلنیوم نیز تیمار سلنیوم با غلظت 243/0گرم در لیتر بالاترین مقدار صفات مذکور را دارا بود.
To study the impact of selenium spraying and drought tension on some traits of corn Ns 640 cultivar, an experiment was carried out in split plot with complete random blocks in three replications in research farm of agricultural college of Urmia university in 1392. The experimental treatments included four levels of selenium spraying ( control, % 162, % 243, and % 324 g per litre ); as the secondary factor and the irrigation treatments in three levels ( 80, 60, and 40 percent of farming capacity ); as the main factor. The results showed that the traits of the stalk height, 1000-seed weight, protein percentage, chlorophyll a and b, seed yield and the rate of selenium of seed were under the significant selenium and irrigation treatments. The biologic yield was under the impact of selenium but the irrigation treatment didn't have meaningful effect on this trait. The highest stalk height ( 246cm ), protein percentage ( %12.31 ), seed yield ( 14678.8 kg/h ) were obtained respectively from irrigation treatments in %80, %60, and %80 of farming capacity. Selenium spraying and selenium treatment with %243g concentration per litre had the highest amount of the mentioned traits.
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