Evaluation of sunflower varieties resistance to Birds Damage in Golestan province
Abstract:
In order to determine the extent of bird damage on sunflower common cultivars, the present study was conducted in a RCB design with three replications at Gonbad Agricultural experiment Station in the spring and summer of 2005. The cultivars were Master, Gabor, Hy25, Progress and Armavirsky. Each plots contained 5 rows and 5.5 meters in length. Totally, 100 heads were selected on Post-Maturation (PM) stage and the following parameters were evaluated: percentage of damaged heads in each plot; average of damage rate to heads; head distance from the ground surface (cm); head angle (degree); and head shape. Gabor and Master showed the lowest and the highest quantities of bird damage with 8.18% and 21.79%, respectively. Although there were not any significant difference among cultivars in the case of amount of bird damage, but Gabor and Armavirsky with 38.5% and 38.4%, had the least damages while Progress and Master with 50.9% and 50.8% had the most bird damages of sunflower heads. Except for the height, effect of cultivars on none of evaluated traits was significant. Correlation of traits indicated that plants with more head diameters had less head angles. There was significant correlation between head shape and head damage content, i.e., concave heads had more damage (P<0.05). There was positive correlation between damage rate and head angle (P<0.05). Based on present results, Gabor is recommendable cultivar for prevention of bird damage to sunflower heads.
Language:
Persian
Published:
Journal of Conservation and Utilization of Natural Resources, Volume:1 Issue:1, 2009
Page:
37
magiran.com/p590866  
روش‌های دسترسی به متن این مطلب
اشتراک شخصی
در سایت عضو شوید و هزینه اشتراک یک‌ساله سایت به مبلغ 300,000ريال را پرداخت کنید. همزمان با برقراری دوره اشتراک بسته دانلود 100 مطلب نیز برای شما فعال خواهد شد!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی همه کاربران به متن مطالب خریداری نمایند!