Variance and covariance components of agronomic and quality traits assessed in tetraploid potato and their implications on practical breeding.

ABSTRACT: Potato is a versatile food crop and major component of human nutrition worldwide. Model calculations and computer simulations can be used to optimize the resource allocation in potato breeding programs but require quantitative genetic parameters. The objectives of our study are to (i) estimate quantitative genetic parameters of the most important phenotypic traits in potato breeding programs, (ii) compare the importance of inter- vs. intra-population variance, (iii) quantify genotypic and phenotypic covariances among phenotypic traits, and (iv) examine the effect of a preselection in the single hills stage on variance and covariance components in later stages of the breeding program. Our study was based on a total of 1066 clones from three breeding programs which were evaluated in a non-or

SUBMITTER: Thelen K 

PROVIDER: S-EPMC11780675 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature