Regression Analysis and Correlation between Traits in Shoot Induction of Potatoes

Due to the sensitivity of potatoes to viruses, the production of virus-free plants, reduction in production costs, and increased performance, in vitro cultivation of this plant is crucial. This study evaluates the effects of six combined hormones and vitamins on main and secondary shoot lengths of Agria potatoes. Conducted as a randomized complete block design experiment with three replications from 2012 to 2014 in laboratory conditions, the study utilized multiple linear regression analysis. Significant correlations between the traits were identified. Results indicated no significant relationship between main shoot length and other variables in a stepwise manner. An increase in the minimum of secondary shoot length resulted in longer main shoot lengths, whereas an increase in the number of secondary shoots led to shorter main shoot lengths. Additionally, a positive and significant correlation at 1% was observed between the minimum and maximum secondary shoot lengths. Increasing secondary branch lengths resulted in increased minimum and maximum secondary shoot lengths. Conversely, the correlation between main shoot length and the number of secondary shoots was negative and significant.