Both Capsicum and Lycopersicum exhibit the same correlation between fruit shape and fruit size, a correlation which is wholly lacking for the same characters in the Cucurbits. In the pepper both positive and negative correlations of shape and size were discovered in F2 generations, the sign of the correlation being dependent on the parental combinations. Accordingly the cause for the correlations must be the genetic one of linkage, due to the presence of shape and size genes on the same chromosome, a fact which has already been reported for the tomato. Fruit sizes in both genera exhibit logarithmic rather than additive distributions.
Proceedings of the Iowa Academy of Science
©1934 Iowa Academy of Science, Inc.
Lindstrom, E. W.
"Inheritance of Fruit Shapes and Sizes in the Pepper and Tomato,"
Proceedings of the Iowa Academy of Science, 41(1), 114-114.
Available at: https://scholarworks.uni.edu/pias/vol41/iss1/25