Sarmah, BhaswatiDas, Prasurjya2024-07-182024-07-182023https://krishikosh.egranth.ac.in/handle/1/5810212225Potato is the world’s most important tuber vegetable, with a vital yet often under- appreciated role in the global food system. True potato seeds are small, round, and dark in color, and they are produced by the sexual reproduction of potatoes. A major constraint in potato production is the lack of good quality of seeds. Quality seed is one of the most important elements in successful potato cultivation. Unlike traditional potato propagation methods that use tubers, True potato seed (TPS) offers several advantages such as disease-free starting material, easier transportation, and increased genetic diversity. However, they have low acceptability due to low uniformity in heterogenous seedling populations and low vigour. Seed priming is a pre-sowing treatment that aims to improve seed performance and accelerate germination. TPS priming is a technique used to enhance the germination and early growth of true potato seeds. In the present study, the parameters Germination percentage(G%), seed vigour index(SVI), Germination index(GI), seedling dry weight(SDW), vigour at 30DAT(V@30DAT), plant height(PH), Number of tuber plant(NTPP), Tuber yield per plant(TYPP), Tuber dry matter(TDM) and Incidence of major diease(IOD) high significant variation at P=0.05 was observed among 10 treatments. Among the treatments the highest germination percentage, seed vigour index and germination index is shown in the seeds primed with gibberellic acid followed by melatonin and T. harzianum. Seeds primed with Melatonin recorded maximum vigour at 30DAT. Among the treatments highest number of tuber per plant, tuber yield per plant and tuber dry matter is shown by the seeds primed with poly ethylene glycol (PEG). Therefore the experimental findings revealed that priming with Gibberellic acid and polyethylene glycol enhances the seedling and tuber characters producing superior result relatively compared to other results and can be promoted for further large scale trials.EnglishThesis