Soil waterlogging reduces gas exchange between the soil and the atmosphere, leading to oxygen deprivation in the rhizosphere. Brachiaria spp. are the most widelysown forage grasses in tropical America. Among commercial Brachiaria grasses, B. humidicola shows superior tolerance to waterlogged soils based on maintenance of growth and reduced leaf chlorophyll loss and senescence. However, little i...

environmental stresses are one of the most important factors of agricultural products reduction in the world. the influence of different concentrations of nickel nitrate (0, 100, 200 and 500 μm in hoagland’s solution) on dry matter, catalase enzyme, flavonoids, hydrogen peroxide, peroxidase enzyme, mda and accumulation of ni were studied in coriander ( coriandrum sativum ) plants. treatment wit...

The storage and distribution of copper, cadmium, and uranium and their effects on ionic contents in roots and shoots of Azolla filiculoides has been studied by x-ray microanalysis. The relative content of copper was eightfold higher in the root than in the shoot, suggesting low mobility of this metal in Azolla plant. Cadmium relative content in the shoot was similar to its content in the root, ...

Soybean (Glycine max [L.] Merr. cv Braxton) plants were grown in sandy soil with only natural rainfall (N) or with supplemental irrigation (I). Water-stressed plants grew more extensive root systems, whereas irrigated plants developed larger shoots and smaller root systems. Maximum stomatal apertures were observed at the beginning of each photoperiod. Partial stomatal closure occurred each afte...

Nitrate uptake, reduction, and translocation were examined in intact, 14-day-old, nitrogen-depleted wheat (Triticum vulgare var. Knox) seedlings during a 9-hour exposure to 0.2 mm Ca (NO(3))(2). The nitrate uptake rate was low during the initial 3-hour period, increased during the 3- to 6-hour period, and then declined. By the 3rd hour, 14% of the absorbed nitrate had been reduced, and this inc...

An efficient and reproducible in vitro protocol for largescale multiplication of Liquorice (Glycyrrhiza glabra L.)has been described. Multiple shoots formation was significantly influenced by growth regulators, photoperiod,explant position, season of explant collection and culture passage. Nodal explants were collected atmonthly intervals to initiate in vitro cultures. The hig...

One of the determining factors for success red betel (Piper Crocatum Ruiz) stem cuttings is growing medium used to grow roots and shoots. This study aims understand influence type planting media on growth roots, shoots, height seedlings determine best that supports The was conducted through an experiment using a Randomized Block Design, consisting 6 types each treatment repeated four times. tre...

Culture conditions were developed that induce Arabidopsis thaliana (L.) Heynh. root cuttings to regenerate shoots rapidly and at 100% efficiency. The shoots produce viable seeds in vitro or after rooting in soil. A transformation procedure for Arabidopsis root explants based on kanamycin selection was established. By using this regeneration procedure and an Agrobacterium tumor-inducing Ti plasm...

GF677 rootstock (peach ×almond) is an important rootstock for peach. It was produced by Bernhard in French at Grand Farad Research Centre in 1965. The present study focused on the effect of some PGRs on propagation and root induction on GNH medium as part of providing an applicable protocol for micro-propagation of mentioned rootstock. Results indicated that BAP at concentration of 0.5 mg/l plu...