International Journal of Horticulture, 2024, Vol.14, No.6, 333-342 http://hortherbpublisher.com/index.php/ijh 341 4 Discussion and Progress The differences in plant height might be due to quality of planting materials and plant genetics (Eaton et al., 2017; Banjade et al., 2019). Slower growth in earlier days may be due to lower temperature (Banjade et al., 2019). Number of eyes is one of the factor to determine the number of stems per seed tuber (Struik, 2007). The difference in canopy diameter among the varieties might be due to genetic and environmental factors. Temperature and light intensity may interact to influence the number of leaves that grow. The significant differences in number of leaves that grow per plant is due to plant genetic differences among the varieties. The rate of energy and material between atmosphere and plant canopy is determined by Leaf area index (LAI) of the plants (Vose et al., 1994). The variation was due to varietal characteristics and number of branches and stem per hill. These differences in the numbers of tubers of different grades among varieties could be related to the variety's tolerance to the trial site's climatic circumstances, its genetics, or the quality of the potato seed (Eaton et al., 2017). The numbers of tubers per plant are the most important components of yield (Poudel and Karkee, 2016). Highest ummarketable tuber yield in Myagdi local was due to wart infestation in Myagdi local (white type / seto aalu) but red type (rato aalu) was wart resistant. Also in Mustang local unmarketable tuber was high due to wart susceptibility and small tubers. Besides small size warts were seen in some tubers of Kufri Jyoti too which contradicts with (Sharma and Chakrabarti, 2020; Luthara and Kumar, 2024) but in favour with (Bhaardawj et al., 2020; Sood 2021). Although this study revealed the growth and yield differences of various potato varieties in the Myagdi region there are still some limitations. Weather conditions and soil properties during the experimental period may have influenced the results, but due to limitations in the study design, these factors could not be precisely controlled. The study only assessed the performance of the varieties in one growing season, and the differences between varieties may vary across multiple seasons and years. Therefore, future research should consider conducting multi-location trials across different growing seasons and climate conditions to verify the stability of these varieties in diverse environments. Additionally, modern breeding techniques, such as genomic selection and marker-assisted selection should be integrated to further improve the superior varieties, enhancing their disease resistance and yield stability. The study shows that the Janakdev variety has high yield potential and broad adaptability in Myagdi region making it suitable primary choice for local farmers. However, to achieve large-scale adoption, further verification of its performance under different altitudes and climate conditions is necessary. Moreover, technical training for farmers should be strengthened, along with promotion of appropriate cultivation techniques and pest management measures to fully realize the yield potential of this variety and enhance local productions levels. Authors’ contributions The research idea, planting material collection, layout, data analysis, article writing was done by BD. TNB was major supervisor during research period and aid in manuscript draft too. SA aid in data collection and manuscript draft. DB aid on manuscript draft. All authors read and approved the final manuscript. Acknowledgments The authors sincerely acknowledge Agriculture and Forestry University (AFU) Rampur, Chitwan, Nepal and Prime Minister Agriculture Modernization Project (PMAMP) Nepal for providing opportunity to conduct this research. Conflict of Interest Disclosure The authors affirm that this research was conducted without any commercial or financial relationships that could be construed as a potential conflict of interest. References Baayen R.P., and Stachewicz H., 2004, Synchytrium endobioticum, EPPO Bulletin, 34(2): 213-218. https://doi.org/10.1111/j.1365-2338.2004.00722.x Bhardwaj V., Kaushik S.K., Singh B.P., Sharma S., Lal M., Sood S., Singh R., Patil V., Srivastava A., Kumar V., Bairwa A., Venkatasalam E.P., Challam C., and Chakrabarti S.K., 2020, Kufri Karan-first multiple disease resistant, high yielding potato variety for cultivation in hills and plateaux of India, Potato Journal, 47(2): 1-10.
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