sunflower (helictnthur annuus l. cvs mehr shafagh) seedlings were grown in nutrient solutions containing 20.5 to 70.4 mm nacl and 0 as the control. the effects of salinity on developmental changes occurring in the shoot apices of plants were studied. at 20.5 mm naci concentration, the leaf emergence rate and plastochron index of shafagh increased significantly, but this phenomenon was not obser...

Sunflower (Helictnthur annuus L. cvs Mehr Shafagh) seedlings were grown in nutrient solutions containing 20.5 to 70.4 mM NaCl and 0 as the control. The effects of salinity on developmental changes occurring in the shoot apices of plants were studied. At 20.5 mM NaCI concentration, the leaf emergence rate and plastochron index of Shafagh increased significantly, but this phenomenon was not o...

Hop (Humulus lupulus L.) is a clonally propagated, dioecious, perennial, climbing plant used commercially for their secondary metabolites. The resins containing α- and β-acids, essential oils produced by the lupulin glands, present on female flowers are to add bitterness, aroma flavour beer. Recently, flavonoids, including chalcones flavanones, of hops have been shown exert variety biological a...

Tissue culture is considered as an alternative tool for garlic breeding as traditional breeding is not possible due to its sterility. A study was carried out to develop a protocol of regeneration in Bangladesh local garlic. Shoot and root meristems of garlic cv. Bangladesh local were cultured on Murashige and Skoog (MS) medium containing various growth regulator combinations. Regeneration from ...

Meristems may be determinate or indeterminate. In maize, the indeterminate inflorescence meristem produces three types of determinate meristems: spikelet pair, spikelet and floral meristems. These meristems are defined by their position and their products. We have discovered a gene in maize, indeterminate floral apex1 (ifa1) that regulates meristem determinacy. The defect found in ifa1 mutants ...

The development of higher plants depends on the activity of a shoot apical meristem. Organs are formed on the flanks of the meristem, while pluripotent stem cells are found in a separate domain in the meristem centre. Further domains are distinguished by the expression patterns of genes that control the development of the shoot meristem. Although most plant cells are immobile, their relative po...