Haplotype Analysis of the Functionally characterized Genes Related to Yield in Rice

Author: Vinay Kumar N., Krishna Sundaram T., Bandana P. and Prasanna Rajesh A.

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Abstract

Rice is a staple food crop for billions of people and it meets around 20% calorie intake of the human population. Increasing global population, reducing arable land and climate change are limiting the rice production and productivity. In the era of narrowing genetic diversity and increased phenotypic similarity of cultivated germplasm, genomics data are indispensable to tap the genetic potential of the cache germplasm and utilize for crop improvement. In this context, 3K RGP data serves as a mine to dig out the genetic variation of the potential genes. Although several variants of biotic and abiotic stress tolerant genes are meticulously examined that are resistant to various races of pests, variants in yield related genes are disregarded. In this current experiment we have analyzed the haplotypic variants and identified the superior haplotypes for the functionally characterized genes which boost the yield. For the panicle architecture genes OsFIB, and OsGA20ox, H2 and H1 were identified as the superior haplotypes with the mean panicle length of 21.31 cm and 21.44 cm. Similarly for the single plant yield DLT- H8 and DTH2-H8 were found to be superior with a mean phenotypic value of 20.02 g and 17.51 g. These superior haplotypes can be introduced into the modern varieties to increase the genetic advance of the yield traits.

Keywords

Haplotype based breeding, Rice, Yield, Functionally characterized genes

Conclusion

In the current study the haplotypes were analyzed for the four yield enhancing functionally characterized genes. The integration of identified superior haplotypes into current breeding programs by introgression into the suitable elite genetic backgrounds through the superior haplotype based breeding strategy holds a considerable importance for improvement of the complex yield traits.

References

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How to cite this article

Vinay Kumar N., Krishna Sundaram T., Bandana P. and Prasanna Rajesh A. (2023). Haplotype Analysis of the Functionally characterized Genes Related to Yield in Rice. Biological Forum – An International Journal, 15(10): 1569-1576.