Growth and production of agricultural crops are greatly affected by water shortage. Thus, yield enhancement under drought conditions is a major goal of plant breeding. Four commercial tomato cultivars (Imperial, Pakmore VF, Strain-B and Tnshet Star), a drought-tolerant breeding line (L 03306) and their hybrid combinations were selected in this study to evaluate drought tolerance and to develop ...

Stachys L. one of the biggest genus of the Lamiaceae family comprises about 200-300 species.  In this research, aerial parts essential oil composition and content of Stachys lavandulifolia Vahl (Lamiaceae)at different stages (vegetative, full flowering and initial fruiting stages) is reported. The oils obtained by water distillation method (Clevenger apparatus) and analyzed by GC and GC/MS. The...

Numerous workers have shown that vegetative propagation of eucalypt was possible at the industrial level using physiologically and onto genetically mature plants. This kind of propagation needs the use of rejuvenated shoots which can be obtained by intense pruning, grafting and successive graftings (with a great attention to take cutting or graft on the precedent generation as soon as possible)...

The effects of irrigation water salinity (12 dS m−), imposed at maximum tillering (35−40 days after sowing, DAS) or booting (50−60 DAS) or grain filling (75−85 DAS) stage of wheat, on growth and yield of the crop was demonstrated. The experiment comprised four treatments – I1: irrigation by fresh water (FW) at all three growth stages (control), I2: irrigation by saline water (SW) at maximum til...

Introduction Soil salinity is an important limiting factor for crop yield improvement, which affects 5-10% of arable lands approximately 75-100 million ha worldwide, depending on estimates (Szabolcs, 1994; Munns, 2002). Most crops are sensitive to salt stress at all stages of plant development, from seed germination through vegetative and reproductive growth. Salt originates from marine geologi...

OBJECTIVES The present in vivo study was designed to assess the efficacy of 3 root canal disinfection protocols in immature dog teeth with apical periodontitis (AP). MATERIAL AND METHODS Forty immature premolars with pulp necrosis and AP of five Beagle dogs were used. Three experimental disinfection protocols were established. After irrigation with 40 ml 5.25% sodium hypochlorite using the En...

in order to study the effects of different salinity levels on turnip (brassica rapa l.), an investigation was conducted at yasouj university, iran, in 2010. the effects of four salinity levels including 1.92, 9.87, 19.6 and 21.94 ds m-1 (20:1 ratio of nacl: cacl2 in hoagland solution) on germination, vegetative and maturity stages of turnip (baherghan landrace) were investigated. the results re...

The tomato cultivated surface is one of the most important surfaces in world. This crop needs a sufficient and continuous supply water during vegetative growth. Therefore, production may be at risk warm water-scarce areas. implementation irrigation alternatives such as regulated deficit (RDI) great importance to reduce use improve quality tomatoes. objective this work was evaluate scheduling us...

The availability of quality planting material is one the most important requirements for increasing productivity any ornamental crop. Horticulturists make use auxins and apply them exogenously to cuttings generate adventitious roots balanced shoots. Many studies have illustrated influence seaweed extracts on growth crops; their in vegetative cutting propagation, our knowledge, has been little i...