Response of yield and yield components of rapeseed to seeding rates in dryland conditions
In order to study the effects of seeding rates on yield and yield components of rapeseed in dryland conditions, a factorial experiment laid out as randomized complete block design in Sararood Dryland Agricultural Research Station in Iran. The factors were two cultivars of rapeseed Brassica napus var. Okapi and Brassicajuncea var. Lethbridge and six levels of seeding rates 6, 8, 10, 12, 14 and 16 kg/ha. Results showed that there was not significant difference between two cultivars in seed yield, the number of branches per plant, the number of pods per plant, but there was in the number of harvest-able plants per area unit, the number of seeds per pod and 1000-seed weight and plant height. Mean of seed yield for Okapi and Lethbridge cultivars obtained 1135.9 and 1035.3 kg/ha, respectively. Seed yield, the number of branches per plant, the number of pods per plant, and the number of seeds per pod were not different between seeding rates, but were showed a difference significant in the number of harvest-able plants per area unit and 1000-seed weight. Interaction of cultivar and seeding rate was not significant except the number of harvest-able plants per unit area and 1000-seed weight. Based on the results, the number of harvest-able plants per unit area increased with increasing of seed rate, but different responses observed about other trials. The highest seed yield for Okapi (1195.2 kg/ha) and Lethbridge (1307/1 kg/ha) obtained at 12 and 10 kg/ha seeding rates, respectively.
Rapeseed seeding rate yield yield components
Alireza Zebarjadi Mokhtar Ghobadi Hossein Hatamzadeh Akhtar Beg
Departement of Plant Breeding and Agromoni, Faculty of Agriculture, Razi university, Kermanshah-Iran Departement of Plant Breeding and Agromoni, Faculty of Agriculture, Razi university, Kermanshah-Iran Deputy of Dry land Agricultural Research Institution-Sararood, Kermanshah-Iran
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
886-887
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）