Drought stress reduces the yield and production of tomato (Lycopersicum esculentum Mill.). Tomato does not naturally accumulate glycinebetaine (GB) in the cells under natural conditions. Effects of exogenous glycinebetaine on some morpho-physiological characteristics of Lycopersicum esculentum Mill. cv. PS was evaluated at different levels of drought stress. The experiment was conducted in a fa...

Paclobutrazol (PBZ) is one of the most important triazole compounds. This compound increases plant tolerance to environmental stresses. A study aimed to investigate the effects of PBZ on morphological and biochemical traits of euonymus (Euonymus japonicas) exposed to NaCl stress. Plants were treated with three levels of PBZ (0, 500 and 1000 mg L-1) and four levels of NaCl (0...

Previous work demonstrated that normal levels of endogenous abscisic acid (ABA) are required to maintain shoot growth in well-watered tomato plants independently of effects of hormone status on plant water balance. The results suggested that the impairment of shoot growth in ABA-deficient mutants is at least partly attributable to increased ethylene production. To assess the extent to which ABA...

Centaurium erythraea plants obtained by indirect organogenesis are described in the paper. The plants were initiated from a single adventitious shoot regenerated from callus derived from the cotyledon of a 30-day-old seedling. The shoot was multiplied on MS medium supplemented with IAA (0.1 mg·L-1) and BAP (1.0 mg·L-1). The multiplication rate (28 shoots per culture within 4 weeks) was highest ...

Andrographis paniculata Nees is traditionally known as Kalmegh, Allelopathic effect of Kalmegh was examined on seed germination and seedling growth of four (Sonalika, VL-914, Euguanda-6 and Mond’s Aids) wheat genotype, the aqueous leaf extracts reduced seed germination and seedling growth of wheat. On the basis of value of per cent reduction in seed germination, germination relative index and v...

Compost-based media were examined for effects on plant growth of leafy lettuce (Lactuca sativa L.) in pot culture. Four types locally sourced composts created using different proportions wood chips from untreated pallets and mixed tropical tree debris, food waste restaurants, chicken manure. prepared by mixing each compost with a commercial peatmoss to create 25, 50, 100% compost-peatmoss mixtu...

Pot experiments were conducted to study the allelopathic effect of Datura stramonium residue on germination and growth characters purslane (Portulaca oleracea L). Experiments set as completely randomized design with four treatments three replications. Results indicated that concentration affect negatively. The lower level induced a stimulatory plant height, leaf area, shoot root, fresh dry weig...

The effects of sugar concentration and strength of basal medium were studied to produce plants from somatic embryos in Asparagus of®cinalis L. There was a signi®cant difference among concentrations of sugar but not among kinds of sugar tested in the present experiment in growth of shoots and roots. When the sucrose concentrations were 10, 30, or 50 g lÿ1, the fresh weight of shoots were 31.5, 1...

durum wheat is one of the most important cereals that culture in the west of iran and dry land from long time. in order to study of chemical stress on germination of iranian durum wheat by coumarin in 5 levels (0, 10, 20, 30, 45 mg/l), an experiment was conducted in randomized complete design as factorial with three replications on 20 iranian durum wheat, which involve two genotypes as control ...