A study about drought stress effects on grain yield components of three sunflower cultivars

سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 653

فایل این مقاله در 9 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

JR_IJABBR-2-3_002

تاریخ نمایه سازی: 26 اسفند 1394

چکیده مقاله:

In order to investigate the effects of drought stress on grain yield and its components, a study was carried out (2011) as split plots in randomized complete blocks design in Isfahan (32° 40' N,51° 48' E). Main factor was drought stress in four levels including irrigation after 80, 100, 120, and 140 mm evaporationfrom evaporation pan (class A) and subplots were three cultivars (Sirena, Record, and Euroflore).Grain number per capitulum, 1000 grains weight, grain yield, biological yield, harvest index, oil percentage, and oil yield were measured. Results showed that by increasing the stress from 80 to 140 mm, all traits exceptoil percentage were decreased. The first irrigation treatment (80mm) seems to be the most appropriate treatment for this plant considering the highest grain and oil yields. Record cultivar produced the highest yield under 80 and 100 mm treatments while Sirena and Euroflore had the highest yields under 120 and 140mm treatments, respectively. Therefore, cultivating record will be better under drought stress or dry farming cultivation.

کلیدواژه ها:

sunflower ، drought stress ، grain number per capitulum ، 1000-grains weight ، grain yield

نویسندگان

Mohammad Hadi Hemmati

Department of Agronomy and Plant Breeding, Isfahan (khorasgan) Branch, Islamic Azad University,Isfahan, Iran.

Ali Soleymani

Department of Agronomy and Plant Breeding, Isfahan (khorasgan) Branch, Islamic Azad University,Isfahan, Iran.