Effect of Seed Priming on Seed quality Attributes of Fresh and Old seed lots of Onion (Allium cepa L.)

Author: Pratik Santosh Kharat, Ashok Thakur, Sushumna Thakur, Manish Kumar, Rohit Verma, Reva Jaryal and Amandeep

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Abstract

The most serious issues in onion crop production are the lower germination percentage of onion seeds and the loss of seed vigour i.e., seed quality attributes, during storage for more than a year. Onion seed lots, viz., fresh (2021) and old (2020), were treated with priming agents such as PEG 6000, KNO3, ZnSO4, GA3 and distilled water for two durations (12 and 24 hours) and non-priming was considered as control. The experiment was designed in CRD having two factors (S1 and S2) and replicated four times. From the results, it was revealed that among seed lots, fresh seed lot was found to be significantly superior to old seed lot. Among priming treatments, both seed lots (fresh and old) primed with GA3 @ 100 ppm for 24 hours, i.e., T8 recorded a maximum speed of germination (38.67, 31.82), germination (93.00, 82.00 %), seedling length (15.55, 13.60 cm), seedling dry weight (24.55, 19.42 mg), seed vigour index-I (1446.15, 1115.17) and seed vigour index-II (2283.40, 1592.75). From the present investigations, it was concluded that all seed priming methods enhanced the seed quality attributes of fresh as well old seed lots, and GA3 priming was found to be the best treatment among other treatment combinations.

Keywords

Onion, Priming, Seed age, GA3, Seed quality

Conclusion

From the present studies, it is concluded that priming treatments, seed age and their interaction had a significant variation on all the seed quality attributes under study. All priming treatments improved seed quality of freshly harvested as well as one-year-old seed lot and seed priming with GA3 @ 100 ppm for 24 hours (T8) is found to be superior over all other priming treatments which is statistically at par with T7 i.e., GA3 @ 100 ppm for 12 hours. Treatment T11 i.e., control (non-primed) in both the seed lots recorded minimum values.

References

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How to cite this article

Pratik Santosh Kharat, Ashok Thakur, Sushumna Thakur, Manish Kumar, Rohit Verma, Reva Jaryal and Amandeep (2022). Effect of Seed Priming on Seed quality Attributes of Fresh and Old seed Lots of Onion (Allium cepa L.). Biological Forum – An International Journal, 14(4): 158-163.