Humic Acids and its Role in Plant Tissue Culture at Low Nutrient Level
نویسندگان
چکیده
Role of humic acids (HA) in plant tissue culture as plant growth regulators has been reviewed. Humic acid is a principal component of humic substances, which are the most important organic constituents of the soil (humus). Humus is defined as the organic matter in soil, a mixture of partially and totally humified substances. Leonardite is the best source for humic acid and it is extracted by using alkali solutions like NaOH/KOH. Humic acid plays a vital role in the plant tissue culture as growth hormone for in vitro propagation of many plant seedlings. This review provides the role of HA in plant tissue culture, field trails and other uses in agriculture. This practice reduces the usage of growth regulators with 2/4 and 1/4 strength MS culture media. This review also helps researchers to carry out experiments with various economically important crops in cost effective manner.
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