breeding based on selection indices is an effective method for improving complex traits such as yield. to assess the efficiency of different selection methods, 50 genotypes of tall fescue (festuca arundinace) were evaluated under two moisture conditions including full irrigation (normal environment) and deficit irrigation (stress environment). the experiment was conducted according to a randomi...

In order to evaluate the different growing media and nitrogen fertilizer (urea) on some morphological traits of Spathiphyllum plant, an experiment was carried out in split plot arrangement based on completely randomized design in three replications in greenhouse conditions in 2018. The main plot consisted of different growing media including T1: Leaf-mold, T2: Vermicompost and T3: A mi...

abstract in order to study the effect of planting season (autumn and spring) and plant density on growth traits and flower yield (dry weight of flower) of matricaria (matricaria chamomilla), an experiment was carried out at the research field of agricultural faculty of shirvan, affiliated to ferdowsi university of mashhad. a split plot design with two factors, including planting time and plant ...

Salvia sclarea L, is an important medicinal plant that its oil has been evaluated for antioxidant, antibacterial, antifungal, anti-inflammatory, antimalarial, anticholinesterase and antiviral. Yield of plants are influenced by environmental and agricultural management factors such as drought stress and nutrition. Plant nutrition is one of the most important factors that positively influence pla...

Twenty-eight lines including 18 F1 plants, 9 parents, and one commercial were studied for estimation of genetic variability, heritability, advance at Agricultural Research Station, Kunaram. Analysis variance revealed highly significant differences among the genotypes all traits indicating presence a considerable amount variability yield its components, quality gall midge incidence. PCV values n...

In order to study the impact of drought stress and planting date on safflower yield and yield components, an experiment was performed in Tabriz region in 2011. The experiment was carried out as split-split plot based on randomized complete block design. The main factor which was applied as split plot includes drought stress  with three levels:  (S1) 80 ± 3 mm evaporation from basin level of cla...

Improving tomatoes keeping quality is crucial for reducing post-harvest losses. Knowledge of heterosis, and combining ability a prerequisite breeding high yielding good shelf life heterotic hybrids. An investigation was undertaken with each 3 lines, testers, 9 hybrids to identify desirable parents crosses 20 fruit biochemical, morpho-physiological, yield traits elucidate the nature gene action ...

Aim This first global quantification of the relationship between leaf traits and soil nutrient fertility reflects the trade-off between growth and nutrient conservation. The power of soils versus climate in predicting leaf trait values is assessed in bivariate and multivariate analyses and is compared with the distribution of growth forms (as a discrete classification of vegetation) across grad...

BACKGROUND AND AIMS Changes in supplies of resources will modify plant functional traits. However, few experimental studies have addressed the effects of nitrogen and water variations, either singly or in combination, on functional traits. METHODS A 2-year field experiment was conducted to test the effects of nitrogen and water addition on leaf longevity and other functional traits of the two...