The Biobrio 7(1 & 2), 2020

Micropropagation Study on Gmelina arborea Roxb. under Salinity Stress

Dr. Md. Sarfaraz Ahmad

ABSTRACT:

The abiotic stress factors are the major limiting factors for the plant growth and crop yield. Among the various abiotic stress factors affecting the plant growth, salinity stress is one of most prominent and the major issue for several crop yields. The salinity stress adversely affects plant propagation by altering the photosynthetic rate and oxidative stress and the metabolic pathways. The present work was designed to determine the salt tolerant capacity and to observe the effects of salinity on the propagation rate of explants from Gmelina arborea Roxb. For this aim, three explants viz; node, internode and shoot apex were collected from the mature tree and were surface sterilized by mercuric chloride. The sterile explants were then cultured over the MS medium supplemented with different hormonal combinations. ....

Keywords:    

Micropropagation, Gmelina arborea, Salinity stress, explants.

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