Kumar, Ajay(Dr.)Panwar, AntrikshaPaliwal, Arunima(Dr.) MemberKumar,Pankaj(Dr.) (Member)Chaudhary, Sumit(Dr.) (Member)2024-09-232024-09-232023Th-301https://krishikosh.egranth.ac.in/handle/1/5810214817Title: “Evaluation of seed lots of quinoa (Chenopodium quinoa Willd.) genotypes and chemical priming for seed quality enhancement” The experiment comprised of two factorviz. three seed lots (2019, 2020, and 2021) and ten quinoa genotypes (IC363733, EC507738, EC507739, EC507740, EC507741, EC507742, EC507743, EC507744, EC507746, and EC507747). The anothertrial was conducted in factorial randomized block design with four replication to assess the chemical priming to enhance the seed quality of quinoa genotypes. The seed quality enhancement experiment was comprised of three factors viz.three seed lots (2019, 2020, and 2021), ten quinoa genotypes (IC363733, EC507738, EC507739, EC507740, EC507741, EC507742, EC507743, EC507744, EC507746, EC507747) and three chemical priming(CaCl2 @ 2% for 24 hour, KNO3 @ 2% for 24 hour and salicylic acid @ 0.5mM for 24 hour). The seed quality attributes like germination percentage, speed of germination seedling fresh weight, seedling dry weight, vigour index I and II, in standard germination test, accelerated ageing test, cold test and water sensitivity testwere recorded significantly higher in seed lot of 2021 quinoa genotypes. Whereas electrical conductivity, moisture content and test weight were recorded significantly higher in 2019 seed lot than 2021 seed lot. Among the genotypes EC507738 were observed to be superior for all parameter except seedling dry weight. The genotypes IC363733 and EC507741 of both 2019 and 2020 seed lot and EC507745 of 2020 seed lot were found non-viable. The Chemical priming of CaCl2at 2% for 24 hour and Salicylic acid at 0.5mM were found effective in improving seed quality of EC507738, EC507739, EC507740, EC507742, EC507743, EC507744 and EC507747 of 2019 seed lot. While KNO3 at 2% for 24 hour improved seed quality of EC507738, EC507742, EC507743, EC507746 and EC507747 and salicylic acid at 0.5mM was found effective to improve seed quality of EC507743, EC507744, and EC507746 genotype of seed lot of 2020 Based on the present investigation, the freshly harvested seeds should be preferred to grow the quinoa crop over two or more years old seeds. On the basis of seed quality parameters, EC507738, EC507742 and EC507743 were found most suitable genotypes of quinoa to take a good crop. If farmer have older seeds, the priming of salicylic acid at 0.5mM for 24 hours was recommended to improve germination and vigour of the quinoa seeds.EnglishThesis