Half-sib mating is an appropriate approach to estimate additive variance component of quantitative traits. This research was conducted to estimate genetic parameters of physiological traits and their response to drought stress in Dactylis glomerata. Twenty five half sib families derived from poly cross of 25 parental genotypes were evaluated under two moisture environments (normal and drought c...

In order to evaluate the effect of sodium nitroprusside (SNP) as an effective antioxidant with advantageous impact in reducing oxidative stress in purple coneflower (Echinacea purpurea) seedlings under saline condition, a factorial experiment with arrange of completely randomized design with four replications was conducted at Sana Institute of Higher Education in 2015. In this study, the effect...

In a greenhouse experiment aimed to compare drought resistance, photosystem II efficiency was evaluated using chlorophyll fluorescence parameters and chlorophyll content of four pistachio (Pistacia vera L.) rootstocks based on a completely randomized design (CRD) as factorial with drought treatment (PEG + Hoagland solution) at four levels (0, -0.5, -1 and -2 MPa) and four pistachio rootstocks(A...

abstract the present study was conducted to examine the effect of proficiency on students interaction while carrying out the grammar-based task(s) in collaboration. in particular, the study examines whether the level of proficiency affects the learners’ focus of attention to grammatical and lexical features. the study takes a further step and examines whether there is any difference in the use...

Soybean (Glycine max) is sensitive to drought stress, and increasing its yield, requires the selection of tolerate varieties which are adapted to semiarid or low water climates of Iran. In this research, the experiment was performed based on a factorial completely randomized design with three replications at 2013. Experimental factors were consisted of 8 genotypes of soybeans and 6 levels of dr...