تاثیر سطوح مختلف آبیاری، خاکپوشه پلاستیک و مواد ضد تعرق بر برخی صفات فیزیولوژیک و عملکرد دانه ذرت رنگین
الموضوعات : مجله علمی- پژوهشی اکوفیزیولوژی گیاهیداوود عادلیان 1 , هوشنگ فرجی 2 , امین صالحی 3 , علی مرادی 4
1 - دانشجوی دکترای فیزیولوژی گیاهان زراعی، دانشکده‌ی کشاورزی، دانشگاه یاسوج، ایران
2 - دانشیار گروه زراعت و اصلاح نباتات، دانشکده‌ی کشاورزی، دانشگاه یاسوج، ایران
3 - دانشیار گروه زراعت و اصلاح نباتات، دانشکده‌ی کشاورزی، دانشگاه یاسوج، ایران
4 - استادیار گروه زراعت و اصلاح نباتات، دانشکده‌ی کشاورزی، دانشگاه یاسوج، ایران
الکلمات المفتاحية: محتوای رطوبت نسبی, فلورسانس کلروفیل, ذرت رنگین, خاکپوشه پلاستیک, قند محلول برگ,
ملخص المقالة :
In order to evaluate the effects of plastic mulch, kaolin and atrazine as anti-transpiration materials on some physiological attributes and grain yield of rainbow corn grown under different irrigation regimes, a two-year field experiment was carried out in Borazjan, Bushehr Province in 2016 and 2017 growing seasons. A randomized complete block design arranged in a split-split plot with three replications was employed to investigate the following experimental factors; irrigation regimes at three levels, (irrigation after 25 (no water deficit stress), 40 (mild water deficit stress) and 60% (severe water deficit stress) of field capacity (FC) water depletion), plastic mulch at two levels (with and without mulch) and anti-transpiration materials at three levels (kaolin, atrazine and no material). The results demonstrated that interaction between irrigation regimes and anti-transpiration materials was statistically significant on Fv/Fm ratio, and interaction between plastic mulch and anti-transpiration materials was significant on leaf soluble sugar content. At irrigation regime of 60% of FC water depletion, the highest Fv/Fm (0.578) was found when atrazine was applied, whereas the lowest value (0.468) was related to kaolin application. The obtained results suggest that in regions where water is a limiting factor, application of plastic mulch and atrazine wold improve crops quantitative and qualitative yield.
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