An experiment was conducted to study the effects of plant density and cultivars on seed yield and yield components of corn (Zea mays L.) under the climatic conditions of Khorramabad at the Agriculture Research Station of Sarab Changaei. This experiment was a factorial on the basis of a randomized complete block design (RCBD) with four plant densities (6.5, 7.5, 8.5 and 9.5 plant/m2), three cor...

 To study the effects of plant density and species on forage and grain yield of Vicia sp., anexperiment was conducted in College of Agriculture, University of Lorestan, under dry farming conditions during 2007-2008 growing season. Three levels of plant density at 100, 150 and 200 seed per square meter along with three species of Vicia including Vicia narbonensis, Vicia sativa and Vicia dasycarp...

Diallel crosses of six breeding inbred lines of corn (Zea mays L.) were used to estimate combining abilities, heterosis and some other genetic parameters for yield and some of its components. Parents, 15 F1 crosses and 4 filler genotypes, were evaluated in a 5×5 simple lattice design. For all the traits studied, except seed length, the efficiency of lattice design was less than one. Therefore, ...

In order to investigate the relationship among seed yield and its components in safflower, path and factor analysis were conducted using the agronomic and morphological traits of 32 genotypes. Genotypes were evaluated on the Research Farm of Isfahan University of Technology, using a randomized complete block design with three replications. The correlation coefficients showed that number of seed...

     Confectionery sunflower (Helianthus annuus L.) is one of the valuable crops which less is known about its variability. Fifty sunflower populations have been gathered from different regions of Iran and evaluated for agro-morphological traits in completely randomized design with 10 repetitions under pot conditions. The twenty traits including days from planting to flowering, days from planti...

Under irrigation and in double-cropping system, a large amount of plant residue remains after harvest that along with the limited time for residue decomposition and complete seedbed preparation, necessitates reduced tillage and special residue management. In the present study, the effects of various seedbed preparation methods on vegetative growth, yield components and seed and oil yields of su...