Marker Assisted Selection for Development of Drought Resistant Crops

Author: Gojjepalli Rajitha, Nilesh Talekar, P. Sri Sai Chaitanya, V. Sruthi and D.V. Sravani

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Abstract

The most important environmental stress effecting field crops productivity is drought. In major crops the drought resistance is governed by genetic, genomic and molecular studies. These studies include identification of genes affecting drought resistance and their engineering in staple crops. Underlying drought resistance in crops elucidation of complex mechanisms enhance the drought resistance in new varieties development. The key tools of engineering and breeding drought resistance (DR) crops is to unreveal the complex mechanism of drought resistance through intensive and integrated studies in crop plants. DR is regulated by hundreds of genes, numerous small effect loci controlling physiological and morphological responses of drought. During the breeding process exploitation of information related to traits position which are governing the agronomical importance and linked molecular markers can be achieved by molecular assisted selection (MAS). Among the traits success of MAS depends

Keywords

QTL, Molecular Markers, Marker assisted selection, Drought Resistant Crops.

Conclusion

To study genetic and molecular basis of DR various approaches like engineering, breeding of DR crops are integrated. For developing multiple stress resistance plants gene pyramiding with number of relevant traits is required for breeding of these crops though the QTL have been identified by this method only some are successful due to environment change in field conditions or multiple stresses the use of molecular markers in both public and private maize breeding programmes increasing day by day with profound use of MARS in private sector. The exponential growth of genetic information generated challenge to MAS to integrate this information into specific biological contest and convert it into knowledge. The genetic improvement of quantitative traits can be easily done by MARS in plants and animals. Until the complex traits are classified MAS is restricted to gene of moderate to large effect. As MAS is not only labour and cost effective but also less time consuming. Better understanding

References

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How to cite this article

Rajitha, G., Talekar, N., Chaitanya, P. Sri Sai, Sruthi, V. and Sravani, D.V. (2021). Marker Assisted Selection for Development of Drought Resistant Crops. Biological Forum – An International Journal, 13(1): 703-707.