Diversity Analysis of Wheat Hybrids Grown under Timely and Late Sown condition

Author: Ajay Jaiswal, R.S. Shukla, Sharad Tiwari, Vinod Kumar, Suneeta Pandey and Sanjay Singh

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Abstract

To allow for more efficient genetic improvement, an assessment of genetic variance within various germplasm is required. Sixty- eight hybrid wheat genotypes including 10 CMS lines, 5 restorer and 3 checks were evaluated for 13 breeding traits in randomized block design in two environments to find out how much genetic variability there is between genotypes for grain yield and other agronomic traits. Average linkage cluster analysis classified 68 genotypes into four clusters. Higher inter-cluster distance was found between cluster III and II (D2 = 345.07), followed by cluster IV and II (D2 = 319.31), cluster IV and I (D2 = 196.69), cluster II and I (166.17), cluster IV and III (150.02) and cluster III and I (131.79) indicating wider genetic diversity among these clusters. To improve the breeding traits for the enhancement of genetic gain, the parental lines may be crossed with the lines found higher inter cluster distance. Hybridization in between the genotypes of higher inter cluster di

Keywords

Hybrid wheat, Cluster analysis, Genetic distance, Genetic diversity.

Conclusion

Overall variability within a crop is due to heritable and non- heritable components. The present study comprised 68 hybrid wheat genotypes including 15 parental lines with 3 checks that were evaluated at two environments to study the genetic diversity. The highest inter-cluster distance was exhibited between cluster III and II (D2 = 345.07), followed by cluster IV and II (D2 = 319.31), cluster IV and I (D2 = 196.69), cluster II and I (166.17), cluster IV and III (150.02) and cluster III and I (131.79), indicating wider genetic diversity among the clusters. Therefore, initiating crossing program between parental lines of cluster II with members of cluster III; members of cluster II with members of cluster IV; members of cluster I with members of cluster II, III and IV may produce a high amount of heterotic expression in the F1’s and broad spectrum of variability in segregating (F2) populations. As a result, hybrids with a high inter cluster distance and intra cluster distance

References

Wheat (Triticum aestivum L.) belongs to the family Gramineae (Poaceae) has been a staple food of the major civilizations for 8000 years. It is the world's most widely farmed cereal crop, accounting for 17 percent of global agricultural area, feeding roughly 40% of the world's population and providing 20% of total food calories and protein in human nutrition (Ajmal et al., 2013; Getachew et al., 2017; Kumar et al., 2021). To feed an ever-increasing population, improved genotypes are needed to boost wheat production potential per unit area. This could be accomplished by making the most of wheat genetic material's genetic potential. With 109.52 million tonnes of wheat produced, India is the world's second-largest wheat producer. Madhya Pradesh is the world's second-largest wheat grower, with 6.69 million hectares, 17.58 million tonnes, and 2627 kilograms per hectare, respectively. (Anonymous, 2020-21). Analyzing the targeted wheat output at the national level in order to meet demand by 20

How to cite this article

Ajay Jaiswal, R.S. Shukla, Sharad Tiwari, Vinod Kumar, Suneeta Pandey and Sanjay Singh (2022). Diversity Analysis of Wheat Hybrids Grown under Timely and Late Sown Condition. Biological Forum – An International Journal, 14(1): 1592-1595.