|
Impact of nitrogen limitation on physiological traits, yield and yield components of winter cereals
|
M. Etesami *   , A. Biabani , A. Rahemi Karizaki , A. GholiZadeh , H. Sabouri |
|
|
|
Abstract: (4136 Views) |
| In order to investigate the impact of nitrogen fertilizer levels on some physiological traits of winter cereals, this experiment was carried out in Gonbad- e- Kavous research field as factorial based in randomized complete blocks design with four replications during 2013- 2014 cropping year. The first factor including bread wheat Koohdasht cultivar, durum wheat Seimareh cultivar, six rowed barley Sahra cultivar, two rowed barley Khoram cultivar, naked barley Line 17 cultivar, triticale Canadian cultivar and oat Javaniloo cultivar and the second factor nitrogen fertilizer evaluated at two levels zero and optimum. Results showed that nitrogen and cultivar interaction was not significant on these traits but cereals specious indicated significant difference in yield and yield components, biological yield, harvest index and grain rate and duration grain filling period at one percentage level. Triticale reached to physiological maturity stage with 1885.85 growth degree days by 160 days after planting. Triticale reached to physiological maturity with receiving 1885.85 growth degree days by 160 days after planting and was allocated the highest number of spike per square meter, biological yield, grain yield and harvest index. Oat with receiving 2069.66 growth degree days by 167.1 days after planting showed the lowest one thousand -grain weight, grain yield and harvest index rather than other cereals. Spike number per plant, grain number per spike, grain weight and duration filling period had significant and positive correlation with economic yield and spike number per plant had the most significant correlation with grain yield. Biological yield and harvest index showed significant and positive correlation to grain yield either. |
|
| Keywords: Physiological maturity, Yield, Wheat, Grain weight. |
|
|
Full-Text [PDF 244 kb]
(2945 Downloads)
|
Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2015/07/26 | Accepted: 2015/07/26 | Published: 2015/07/26
|
|
|
|
|
|
|
| Send email to the article author |
|
|
|
| Add your comments about this article |
|
|
|
