INTRODUCTION Potato (Solanum tuberosum L. 2n=4x=48) is known as the "King of vegetables". It's a tuber crop that belongs to the solanaceae family (Rahman et al., 2016). Thebase chromosome number of Potato is X=12, In addition to diploids (2n = 2x = 24), triploids (2n = 36), tetraploids (2n = 48), pentaploids (2n = 60), and hexaploids (2n = 72) (Lee et al., 2021). In terms of food and protein production per unit area and time, it is superior to all other major food crops, thus contributing to global food and nutritional security. Potato is widely used as raw material in the starch extraction industry. About 75 to 80% of a potato tuber's weight is made up of water, followed by 16 to 20% of carbs, 2.5 to 3.2% of crude protein, 1.2 to 2.2% of true protein, 0.8 to 1.2% minerals, 0.1% to 0.2% of crude fat, 0.6% of crude fibre, and vitamins B and C. (Patel et al., 2018). Potato is a Rabi season crop. It’s better growth and production around 20-degree Celsius temperature are needed. In potato, tubers formed from the stolon. It is a most basal node of the plant, below the soil level. Stolon formation and tuberization of stolons are the two stages of tuber formation. The potato tuber is a modified stem with a shorter axis and leaf tissue that is noticeably undeveloped. Inflorescence of potato is cymose, it’s fruit type is berry, and it’s flowers are generally open in the early morning. Potato is self-pollinated crop (Ram 2019). Yield is a complex character that is influenced by many different contributing factors and how they interact. A correlation coefficient analysis measures the relationship between two or more plant characters and determines the component characters for selection that can be used to improve yields through genetic improvement and the term correlation is given by Galton (1988). Path coefficient analysis can help determine whether the association of these characters is due to their direct effects on yield or is a result of indirect effects they exert via other component characters. The path coefficient technique was developed by Wright (1921). In order to determine the degree of correlation between various yield-contributing attributes and their direct and indirect effects on tuber yield, the current study was conducted (Prabha et. al., 2016). MATERIAL AND METHODS The current study was carried out utilizing a Randomized Block Design with three replications at the Horticulture Research Center of the Sardar Vallabhbhai Patel University of Agriculture and Technology in Modipuram, Meerut, during the Rabi season 2020–21. Individual plot dimensions for the potato genotypes were 1.8×1.0 meter with spacing (60 × 20 cm). In that experiment materials comprised 21 morphological different potato genotypes (Table 1) were taken from CPRI Modipuram Meerut. For observation five plants were selected in each plot to grow a healthy crop entire suggested agronomical operations and plant protection measures were applied during studied. The following eleven characters were observed in five selected plants viz., germination % at 20 DAP, number of leaves at 30 DAP, number of leaves at 60 DAP, number of nodes at 30 DAP, number of nodes at 60 DAP, length of internodes, plant height, number of stem plant-1, number of tubers plant-1, tuber sized, tuber yield plant-1. Correlation coefficient was suggested by employing the formula given by (Al-jibouri et al., 1958). The path coefficient was calculated using Dewey and Lu's approach from 1959. RESULT AND DISCUSSION Correlation coefficient. In general, the genotypic correlation coefficient was found to be larger than the phenotypic correlation coefficient among the eleven characters under study (Table 2), indicating a significant intrinsic link between various pairs of features in potato germplasm. At the genotypic level, tuber yield plant-1 showed positive and highly significant correlation with tuber size (cm) (0.772**), followed by number of leaves at 60 DAP (0.550**), number of tubers plant-1 (0.501**), germination % at 20 DAP (0.332**), number of leaves at 30 DAP (0.288*). Whereas, negative and highly significant correlation with plant height (-0.339**), length of internodes (cm) (-0.316*). Positive and non-significant correlation with number of stem plant-1 (0.215), number of nodes at 60 DAP (0.148), number of nodes at 30 DAP (0.111). At the phenotypic level, tuber yield plant-1 exhibited highly positive and significant correlation with tuber size (cm) (0.742**) followed by number of leaves at 60 DAP (0.549**), number of tubers plant-1 (0.489**), number of leaves at 30 DAP (0.277*), germination % at 20 DAP (0.246*). Highly significant but negative correlation with plant height (-0.328**), length of internodes (cm) (-0.294*). Whereas positive and non-significant correlation with number of stem plant-1 (0.207), number of nodes at 60 DAP (0.148), number of nodes at 30 DAP (0.110). Germination % at 20 DAP showed highly significant and positive correlation with tuber size, tuber yield plant-1. Whereas, positive and non-significant correlation with number of stem plant-1, number of leaves at 30 DAP, number of leaves at 60 DAP, number of nodes at 30 DAP, number of nodes at 60 DAP. Negative and non- significant correlation with length of internodes, plant height, number of tubers plant-1. Number of leaves at 30 DAP exhibited positive and highly significant correlation with number of leaves at 60 DAP, number of stem plant-1, tuber yield plant-1. Whereas, positive and non-significant correlation with number of nodes at 60 DAP, germination % at 20 DAP, number of nodes at 30 DAP, tuber size (cm), number of tubers plant-1 while, negative and non-significant correlation with plant height (cm), length of internodes (cm). Number of leaves at 60 DAP showed positive and significant correlation with number of nodes at 60 DAP, number of nodes at 30 DAP, number of stem plant-1, number of leaves at 30 DAP, tuber yield plant-1, number of tubers plant-1. Whereas, positive and non-significant correlation with tuber size, germination % at 20 DAP, length of internodes while negative and non-significant correlation with plant height. Number of nodes at 30 DAP showed highly positive and significant correlation with number of nodes at 60 DAP, number of stem plant-1, number of leaves at 60 DAP, number of tubers plant-1. Positive and non-significant correlation with number of leaves at 30 DAP, tuber yield plant-1, germination % at 20 DAP, while negative and non-significant correlation with tuber size (cm), plant height, length of internodes. Number of nodes at 60 DAP exhibited positive and significant correlation with number of nodes at 30 DAP, number of stem plant-1, number of leaves at 60 DAP, number of tubers plant-1. Whereas, positive and non-significant correlation with number of leaves at 30 DAP, tuber yield plant-1, germination % at 20 DAP, length of internodes while negative and non-significant correlation with tuber size, plant height. Length of internode showed positive and highly significant correlation with plant height, and negative and highly significant correlation with number of tubers plant-1, while negative and less-significant correlation with tuber yield plant-1, number of stem plant-1. Positive and non-significant correlation with number of leaves at 60 DAP, number of nodes at 60 DAP and negative and non-significant correlation with tuber size, germination % at 20 DAP, number of nodes at 30 DAP, number of leaves at 30 DAP. Plant height showed positive and highly significant correlation with the length of internodes, while negative and significant correlation with number of stem plant-1, number of tubers plant-1, tuber yield plant-1. Negative and non-significant correlation with tuber size, germination % at 20 DAP, number of leaves at 30 DAP, number of nodes at 30 DAP, number of leaves at 60 DAP, number of nodes at 60 DAP. Number of stem plant-1 exerted positive and highly significant correlation with number of nodes at 60 DAP, number of nodes at 30 DAP, number of tubers plant-1, number of leaves at 60 DAP, while positive and less significant correlation with number of leaves at 30 DAP. Negative and highly significant correlation with plant height whereas, negative and less significant correlation with length of internodes. Positive and non-significant correlation with germination % at 20 DAP, tuber yield plant-1 while, negative and non-significant correlation with tuber size. Number of tubers plant-1 showed positive and highly significant correlation with number of stem plant-1, tuber yield plant-1, number of leaves at 60 DAP, number of nodes at 60 DAP, number of nodes at 30 DAP, while negative and highly significant correlation with length of internodes, plant height. Positive and non-significant correlation with number of leaves at 30 DAP, tuber size, while negative and non-significant correlation with germination % at 20 DAP. Tuber size exhibited positive and highly significant correlation with tuber yield plant-1, germination % at 20 DAP. Positive and non-significant correlation with number of leaves at 30 DAP, number of leaves at 60 DAP, number of tubers plant-1 while negative and non-significant correlation with length of internodes, plant height, number of nodes at 30 DAP, number of nodes at 60 DAP, number of stem plant-1. Similarly, result was earlier finding by Sattar et al. (2007); Haydar et al. (2009); Lamboro et al. (2014); Alam et al. (2020); Kumar et al. (2020); Lavanya et al. (2020). Path coefficient analysis. To determine the direct and indirect effects of various features on tuber yield plant-1, the path coefficient analysis was conducted from genotypic and phenotypic correlation coefficient (Table 3). Genotypic path coefficient. At genotypic level, it was observed that the length of internodes showed high positive direct effect on tuber yield plant-1 (kg) followed by tuber size, number of tubers plant-1, number of nodes at 30 DAP, number of leaves at 60 DAP, germination % at 20 DAP, whereas, negative direct effect on tuber yield plant-1 was exerted by the plant height followed by number of nodes at 60 DAP, number of stem plant-1, number of leaves at 30 DAP. At the genotypic level highly positive indirect effect on tuber yield plant-1 was exhibited by the tuber size (cm), number of leaves at 30 DAP, number of stem plant-1, number of leaves at 60 DAP, number of nodes at 30 DAP, number of nodes at 60 DAP while highly negative indirect effect on tuber yield plant-1 was showed by the length of internodes (cm), plant height, number of tubers plant-1 via., germination % at 20 DAP respectively. Highly positive indirect effect on tuber yield plant-1 was showed by the plant height, length of internodes (cm) while highly negative indirect effect on tuber yield plant-1 was exhibited by the number of leaves at 60 DAP, germination % at 20 DAP, number of stem plant-1, number of nodes at 30 DAP, number of nodes at 60 DAP, tube size (cm), number of tubers plant-1 via., number of leaves at 30 DAP respectively. Number of nodes at 60 DAP, number of stem plant-1, number of nodes at 30 DAP, number of leaves at 30 DAP, number of tubers plant-1, germination % at 20 DAP, tuber size (cm), and length of internodes (cm) showed considerable positive indirect effects on tuber yield plant-1 while plant height exhibited negative indirect effect on tuber yield plant-1 via., Number of leaves at 60 DAP respectively. Number of leaves at 30 DAP, number of nodes at 60 DAP, number of leaves at 60 DAP, number of stem plant-1, germination % at 20 DAP, and number of tubers plant-1 exhibited considerable positive indirect effect on tuber yield plant-1 whereas tuber size (cm), plant height and length of internodes (cm) showed considerable negative indirect effect on tuber yield per plant via., number of nodes at 30 DAP respectively. Tuber size (cm), plant height showed considerable positive indirect effect on tuber yield plant-1 while number of tubers plant-1, number of nodes at 30 DAP, number of stem plant-1, number of leaves at 30 DAP, number of leaves at 60 DAP, germination % at 20 DAP and length of internodes (cm) exhibited considerable negative indirect effect on tuber yield plant-1 via., number of nodes at 60 DAP respectively. Plant height, number of leaves at 60 DAP, number of nodes at 60 DAP exhibited considerable positive indirect effect on tuber yield plant-1 whereas number of tubers plant-1, number stem plant-1, tuber size (cm), germination % at 20 DAP, number of nodes at 30 DAP, number of leaves at 30 DAP showed considerable negative indirect effect on tuber yield plant-1 via., length of internodes (cm) respectively. Number of stem plant-1, number of tubers plant-1, germination % at 20 DAP, tube size (cm), number of leaves at 30 DAP, number of nodes at 30 DAP, number of leaves at 60 DAP, number of nodes at 60 DAP exhibited considerable positive indirect effect on tuber yield plant-1 while length of internodes (cm) showed considerable negative indirect effect on tuber yield plant-1 via., plant height (cm) respectively. Plant height, length of internodes (cm), tuber size (cm) showed considerable positive indirect effect on tuber yield plant-1 while number of tubers plant-1, number of leaves at 60 DAP, number of leaves at 30 DAP, germination % at 20 DAP, number of nodes at 30 DAP, number of nodes at 60 DAP exhibited negative indirect effect on tuber yield plant-1 via., number of stem plant-1 respectively. Number of stem plant-1, number of leaves at 60 DAP, number of nodes at 60 DAP, number of nodes at 30 DAP, number of leaves at 30 DAP, tuber size (cm) showed considerable positive indirect effect on tuber yield plant-1 whereas, length of internodes (cm), plant height, germination % at 20 DAP exhibited considerable negative indirect effect on tuber yield plant-1 via., number of tubers plant-1 respectively. Germination % at 20 DAP, number of leaves at 30 DAP, number of leaves at 60 DAP, number of tubers plant-1 showed considerable positive indirect effect on tuber yield plant-1 while, plant height, length of internodes (cm), number of nodes at 30 DAP, number of nodes at 60 DAP, number of stem plant-1 exhibited considerable negative indirect effect on tuber yield plant-1 via., tuber size respectively. Similarly, the finding was reported earlier by Tripura et al. (2016); Shubha and Singh (2018); Patel et al. (2018); Hajam et al. (2019); Supriatna et al. (2019). Phenotypic path coefficient. At phenotypic level, it was recorded that highly positive direct effect on tuber yield plant-1 were exerted by length of internodes followed by tuber size, number of tubers plant-1, number of nodes at 30 DAP, number of leaves at 60 DAP, germination % at 20 DAP whereas, negative direct effect on tuber yield plant-1 was exerted by the plant height followed by number of nodes at 60 DAP, number of stem plant-1 and number of leaves at 30 DAP. At the phenotypic level highly positive indirect effect on tuber yield plant-1 was exerted by the length of internodes (cm) followed by plant height, number of tubers plant-1 while negative indirect effect on tuber yield plant-1 was exerted by the tuber size, number of stem plant-1, number of leaves at 30 DAP, number of leaves at 60 DAP, number of nodes at 30 DAP, number of nodes at 60 DAP via., germination % at 20 DAP respectively. Highly positive indirect effect on tuber yield plant-1 was exerted by the plant height followed by length of internodes (cm) while negative indirect effect on tuber yield was exerted by the number of leaves at 60 DAP followed by number of stem plant-1, number of nodes at 60 DAP, germination % at 20 DAP, number of nodes at 30 DAP, tuber size (cm), number of tubers plant-1 via., number of leaves at 30 DAP respectively. Highly positive indirect effect on tuber yield plant-1 was exerted by the number of nodes at 60 DAP followed by number of nodes at 30 DAP, number of stem plant-1, number of leaves at 30 DAP, number of tubers plant-1, tuber size (cm), germination % at 20 DAP, length of internodes (cm) while negative indirect effect on tuber yield plant-1 was exerted by the plant height via., number of leaves at 60 DAP respectively. Highly positive indirect effect on tube yield plant-1 was exerted by the tuber size (cm), followed by plant height, length of internodes (cm) while negative indirect effect on tuber yield plant-1 was exerted by the number of nodes at 60 DAP, followed by number of stem plant-1, number of leaves at 60 DAP, number of tubers plant-1, number of leaves at 30 DAP, germination % at 20 DAP, via., number of nodes at 30 DAP respectively. Highly positive indirect effect on tuber yield plant-1 was exerted by the number of nodes at 30 DAP followed by number of stem plant-1, number of leaves at 60 DAP, number of tubers plant-1, number of leaves at 30 DAP, germination % at 20 DAP, length of internodes (cm) while negative indirect effect on tuber yield plant-1 was exerted by the tuber size (cm), followed by plant height via., number of nodes at 60 DAP respectively. Highly positive indirect effect on tuber yield plant-1 was exerted by the plant height, followed by number of leaves at 60 DAP, number of nodes at 60 DAP while negative indirect effect on tuber yield plant-1 was exerted by the numbers of tubers plant-1 followed by number of stem plant-1, tuber size (cm), germination % at 20 DAP, number of nodes at 30 DAP, number of leaves at 30 DAP via., length of internodes (cm) respectively. Highly positive indirect effect on tuber yield plant-1 was exerted by the number of stem plant-1 followed by number of tubers plant-1, tuber size (cm), germination % at 20 DAP, number of leaves at 30 DAP, number of nodes at 30 DAP, number of leaves at 60 DAP, number of nodes at 60 DAP whereas, negative indirect effect on tuber yield plant-1 was exerted by the length of internodes (cm) via., plant height (cm) respectively. Highly positive indirect effect on tuber yield plant-1 was exerted by the plant height followed by length of internodes (cm), tuber size (cm)whereas, negative indirect effect on tuber yield plant-1 was exerted by the number of nodes at 60 DAP followed by the number of nodes at 30 DAP, number of tubers plant-1, number of leaves at 60 DAP, number of leaves at 30 DAP, germination % at 20 DAP, via., number of stem plant-1 respectively. Highly positive indirect effect on tuber yield plant-1 was exerted by the number of stem plant-1 followed by number of leaves at 60 DAP, number of nodes at 60 DAP, number of nodes at 30 DAP, number of leaves at 30 DAP, tuber size (cm) while negative indirect effect on tuber yield plant-1 was exerted by the length of internodes (cm) followed by plant height, germination % at 20 DAP via., number of tubers plant-1 respectively. Highly positive indirect effect on tuber yield plant-1 was exerted by the germination % at 20 DAP followed by number of leaves at 30 DAP, number of leaves at 60 DAP, number of tubers plant-1 while negative indirect effect on tuber yield plant-1 was exerted by the length of internodes (cm) followed by plant height, number of nodes at 30 DAP, number of nodes at 60 DAP, number of stem plant-1 via., tuber size (cm) respectively. The similar finding was also reported earlier by Dash et al. (2015); Singh et al. (2015); Mandi et al. (2016); Yerima, (2016); Panigrahi et al. (2017).