Yield and yield components of spring rapeseed cultivars as influenced by plant density grown in Shahrekord region of Iran

Cultivation and appropriate management of rapeseed cultivars is very important to have a good product. An experiment was conducted on the basis of split plot layout with completely randomized block design with three replications. Plant densities in main plots were 40, 80 and 120 plants/m(2), and rapeseed cultivars in secondary plots were Sarigol, RGS 003 and Hyola 401. This research was conducted at Research Farm, Experimental Research Station, Shahrekord city, Shahrekord province, Iran. Plant density had significant influence on the number of secondary branches, the number of pods per plant, seed weight per pod, seed shell weight, mean of pod length, total pod weight and seed yield. Cultivar had significant influence on the number of pods per plant and the number of seeds per pod. Eighty plants/m(2) obtained the maximum number of pods per plant, number of seeds per pod, seed shell weight, mean of pod's length, total pod weight and seed yield. Although the highest number of seeds per pod was related to Hyola 401, but the highest number of secondary branches, mean of pod's length and seed yield were obtained in RGS 003. There were no significant differences in seed yield among these cultivars.