Evaluation of yield and yield components of spring rapeseed varieties in winter cultivation of different plant densities under selenium treatment
Subject Areas : Geneticmostafa zaman fashami 1 , amir hossein shiranirad 2 , mohammad reza dadashi 3 * , ali khorghami 4
1 - Agronomy Department, Gorgan Branch, Islamic Azad University, Gorgan, Iran
2 - Seed and Plant Improvement Institute (SPII), Agricultural Research, Education, and Extension Organization (AREEO), Karaj, Iran
3 - Agronomy Department, Gorgan Branch, Islamic Azad University, Gorgan, Iran
4 - Department of Agronomy, Khoram Abad Branch, Islamic Azad University, Lorestan, Iran.
Keywords: biomass, Foliar application, Plant, Sodium selenite, Pods,
Abstract :
In order to investigate the response of yield and yield components of spring rapeseed varieties in cultivation of winter to plant density under selenium treatment, a factorial experiment was carried out in split-plot randomized complete block design with three replications in the Research Institute of Plant Improvement and Seeds of Karaj in crop years 2014 and 2015. Plant density at three levels (40, 60, and 80 m2) and selenium at two levels including control (non-sprayed with water) and foliar application of selenium (30 gL-1 sodium) were considered in the main plots and variety at five levels (Sarigol, Hyola 401, Jacomo, Jerome, and Dalgan) were considered as subplots. Results showed that the year, plant density, selenium, variety and plant density + year, and variety + plant density had significant effects on the on number of pods per plant, the number of seeds per pod, seed weight, and seed yield. Dalgan variety at 40 m2 density showed the highest seed weight and its seed yield was higher than other varieties. This variety showed the highest biological yield (16622.225 kg ha-1) under 40 m2 density. Also, based on the analysis of the data the highest yield in both years was obtained in treatments including spraying selenium.