Studies on Potato Seed Tuber Degeneration in Karnataka

Author: Soumya Shetty*, Prasad P. S., H. Amarananjundeswara, Sandhya G. C., Vishnuvardhan and N. Basavaraj

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Abstract

Pathogen buildup in vegetative planting material which is drawn from within a crop population over multiple generations, termed as seed degeneration. The degeneration of potato is appeared to be either due to physiological causes or due to infection of tuber-borne viruses. To study the potato seed tuber degeneration an experiment was conducted under AICRP on Potato at Horticulture Research and Extension Centre, Hassan, Karnataka during Rabi season for three consecutive years from 2017 to 2019. An experiment was conducted by using Randomized Complete Block Design with four replications. In the study, treatment with previous seed produce with seed plot technique and previous seed produce without seed plot technique tubers were used. The variety Kufri Jyoti was adopted in the experiment as a ruling variety and agronomic practices were followed as per the package of practices of UHS, Bagalkot. An observation on per cent plant emergence, total tuber yield, per cent incidence of mosaic and P

Keywords

Seed degeneration, Mosaic, Potato Leaf Roll Virus, Yield, seed plot technique.

Conclusion

In the study, lower percentage mosaic (10.70) and potato leaf roll virus of 7.02 per cent incidence were observed in the treatment with previous seed produce using seed plot techniques at 50 days after planting and it was also documented highest tuber yield of 12.38 t/ha. The results indicates in each generation potato seed tuber yield under gone degeneration losses at the range of 2.68 t/ha and 21.64 per cent. Hence, it is concluded that, tubers used from previous seed produce following seed plot techniques observed lower incidence of mosaic and PLRV with higher yield during Rabi season under Southern Dry Zone of Karnataka. Over all, use of seed plot technique for the production of potato tubers was found beneficial as it reduced the rate of degeneration. Further, incorporation of hi-tech seed production systems coupled with advanced virus detection techniques may help in fulfilling the very large demand of quality seed potatoes in the state.

References

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How to cite this article

Shetty, S., Prasad P. S., Amarananjundeswara, H., Sandhya G. C., Vishnuvardhana and Basavaraj, N. (2021). Studies on Potato Seed Tuber Degeneration in Karnataka. Biological Forum – An International Journal, 13(3a): 275-278.