Identification of Fertility Restorers with Desirable General Combining Ability for Oleic Acid Content, Seed Yield and Oil content in Sunflower (Helianthus annuus L.)

Author: M.S. Umar Farooq*, M.S. Uma, S.D. Nehru and C.P. Manjula

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Abstract

During kharif 2020, study was conducted to examine the fertility restoration behaviour of 40 new high oleic inbred lines on six CMS lines and to evaluate the effects of general combining ability by mating the parents in a Line-Tester setup. In rabi 2020, the resulting 240 hybrids were assessed using an alpha lattice design. The male fertility or sterility response of all the F1’s was visually inspected, and the resultant fertile hybrids were then validated once more using the acetocarmine staining procedure. Six CMS lines and 28 high oleic testers were found to be common restorers, while six were found to be common maintainers, out of the 40 high oleic testers assessed for sterility maintenance and restoration activity. The oleic acid content, seed yield plant-1, and oil content of the fertile testers F-20, K-11, L-3-1, G-5, and B-29-2 were found to be good general combiners based on the gca effects. The study's findings made it abundantly clear that the high oleic fertile testers with good general combining ability effects could pass on genes with additive effects to the hybrid progenies in the desired direction; as a result, it would be advantageous to use them as parents in breeding programmes to produce high oleic hybrids with high seed yield and oil content.

Keywords

Sunflower, oleic acid content, fertility restorers, CMS lines, gca effects

Conclusion

The results from the study clearly suggested that the identified high oleic fertile testers with good general combining ability effects for oleic acid content in combination with seed and oil yield could transmit genes with additive effects to the hybrid progenies in the desirable direction thereby, it would be valuable to utilize them as parents in breeding programme to derive high oleic hybrids along with high seed yield and oil content.

References

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How to cite this article

M.S. Umar Farooq, M.S. Uma, S.D. Nehru, and C.P. Manjula (2023). Identification of Fertility Restorers with Desirable General Combining Ability for Oleic Acid Content, Seed Yield and Oil content in Sunflower (Helianthus annuus L.). Biological Forum – An International Journal, 15(2): 170-176.