Isabgol (Plantago ovata Forsk) improvement through induced mutagenesis -A review
Keywords:
Isabgol, mutation, gamma rays, radiation, EMSAbstract
Isabgol (Plantago ovata Forsk) is a wonder medicinal plant in the Unani and Ayurvedic system of medicines. In this crop the major limiting factors for yield are narrow genetic base, and lack of variability on account of low chromosome number, small chromosome size, presence of high heterochromatin in the chromosomes, low chiasmata frequency, low recombination index and shattering. It is known only under cultivation and no wild plants have been reported so far. Several efforts have been made in the part of genetic improvement of this economically important plant. Keeping in view limited success of these experiments, fresh breeding efforts for improvement in several quantitative and qualitative traits need to be undertaken. Some of the traits need to be improved are increase in the seed size and yield, development of compact and non-shattering spike and production of seeds with higher swelling factors and resistance to biotic and a biotic stresses. In recent time, mutagens have been important tools in crop improvement. These mutagens have been used to produce high yielding varieties like Niharika and RI-1. The over all review on mutation breeding of isabgol suggest to focus in future for developing shattering resistant varieties.
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References
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