ficus benjamina commonly known as the weeping fig or benjamin's fig, is a species of moraceae, native to south and southeast asia and australia. it is a topiary tree reaching 15 metres in height in natural conditions. ficus benjamina is planted as a potted plant and as an ornamental shrub in gardens in mazandaran and elsewhere in the country. stem and crown gall symptoms were observed on f...

The cactus Mammillaria gracillis Pfeiff. was propagated in vitro on Murashige and Skoog (MS) medium without any growth regulators. At the bases of some plants abundant callus masses developed. Lower agar and higher MS salt concentrations stimulated callus pro­ duction. In the culture, morphologically normal and hyperhydric shoots were regenerated. The growth of crown-gall tumour was induced on ...