Distribution of nutritional components in grains, shoot and flowers of common and tartary buckwheat landrace variety collected from Chamba district of Himachal Pradesh

• Tartary buckwheat grains and common buckwheat grains showed highest carbohydrate content. In both the species lowest carbohydrate content was observed in flower portion. Highest crude fiber percentage was detected in common buckwheat shoot. • Highest protein content was reported in tartary buckwheat shoot while lowest protein content was observed in grains of common buckwheat. Common buckwheat showed slightly higher fat percentage than tartary buckwheat. • Oleic acid (C18:1) and linoleic A (C18:2) are found in highest amount in grain oil of both tartary and common buckwheat. While in case of shoot oil, palmitic acid is main constituent followed by gondoic acid and linoleic acid in common and tartary buckwheat respectively. Flower oil showed lower content of linoleic acid in case of common buckwheat than tartary buckwheat flower oil. • P, S, Na, Fe, and Cu are reported in highest amount in tartary buckwheat shoot and K is found in maximum concentration in common buckwheat grains. This study mainly focuses on the proportion and distribution of various nutrient components in shoots, grains, and flowers of the landrace variety of common and tartary buckwheat grown by local farmers in Chamba district of Himachal Pradesh. Among all the samples analyzed, tartary buckwheat grains and common buckwheat grains showed the highest carbohydrate content i.e., 50.81 % and 44.66 %, respectively. In both species lowest carbohydrate content was observed in the flower portion (16–21 %). The highest crude fiber percentage was detected in common buckwheat shoot (41.2 %). The highest protein content was reported in tartary buckwheat shoot (37.99 %), while the lowest protein content was observed in grains of common buckwheat (20.99 %). Common buckwheat showed a slightly higher fat percentage than tartary buckwheat. Oleic acid (OA), linoleic acid (LA), and palmitic acid (PA) are the dominant fatty acids reported from both species. OA (C18:1) and LA (C18:2) are found in the highest amount in grain oil of both tartary and common buckwheat. While in case of shoot oil, PA is the main constituent followed by gondoic acid and LA in common and tartary buckwheat, respectively. Flower oil showed lower content of LA (24.31 %) in case of common buckwheat than tartary buckwheat flower oil (38.65 %). All the studied elements showed variable distribution in different parts of the plant samples. P, S, Na, Fe, and Cu are reported in the highest amount in tartary buckwheat shoots and K is found in maximum concentration (40.40 g/Kg) in common buckwheat grains. The highest level of Ca and Mn was detected in common buckwheat shoot, while that of Zn in tartary buckwheat flowers (90.15 mg/Kg). This study revealed the distribution of various nutrient components in different parts of the landrace variety of buckwheat. This can be implicated in crop breeding programs for the selection of elite landraces and functional food development