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CHEMICAL PRIMING OF POTATO TO EXPLORE SPROUTING AND SEEDLING GROWTH POTENTIALITY

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ABSTRACT

CHEMICAL PRIMING OF POTATO TO EXPLORE SPROUTING AND SEEDLING GROWTH POTENTIALITY

Journal: Plant Physiology and Soil Chemistry

A.H.M Motiur Rahman Talukder, A. K. M. Zonayed-Ull-Noor, Faruque Ahmed, Istiak Ahmed, A.A.M. Mohammad Mustakim, Nadira Mokarroma, Lutfun Nahar

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/ppsc.02.2025.73.78

Generally, intact tubers are used as propagating materials for potato crops under field condition, where they typically emerge within 14-15 days. Similarly, the BARI Alu-62 is a potato cultivar commonly propagated using intact tuber. However, exceptionally it faces issues with an unusually high mean emergence time and low emergence percentage under field condition, leading to inconsistency problems reported by local growers. Consequently, a study was conducted to expedite the dormancy breakdown and improve emergence rates (%) through chemical priming. The tuber seeds of Solanum tuberosum treated with gibberellic acid (GA3) @ 0.1% and potassium nitrate (KNO3) @ 1.0%, either individually or in synergy, revealed that GA3 alone and its combination with KNO3 significantly boosted dormancy breakdown and enhanced emergence rates. The application of GA3 alone, as well as its combined use with KNO3, led to the fastest seedling emergence (14-15 days), highest emergence rates (78-80%), and vigorous seedling growth, marked by superior leaf area, total dry matter (TDM), and enhanced yield along with key yield-supporting traits. The greatest plant height was achieved with GA3 @ 0.1%, both individually and in combination with KNO3 @ 1.0%. In conclusion, GA3 @ 0.1%, either alone or combined with KNO3 @ 1.0%, emerged as the most effective priming strategy for breaking dormancy and accelerating emergence in BARI Alu-62.
Pages 73-78
Year 2025
Issue 2
Volume 5