Abstract
Since the plant-length affects both the resistance to lodging and the biomass productivity, the plant-length is one of the most important traits in agriculture. Although a considerable number of studies have been conducted on the genetically mechanisms of plant-length regulation, the comprehensive mechanisms of plant-length regulation are not well understand. This is mainly because most of studies have focused on a singular mechanism, whereas the plural mechanisms may be involved in plant-length regulation. In this study, we tried to detect all chromosome regions affecting traits (CRATs) through the vegetative stages using chromosome segment substitution lines (CSSLs).
We detected CRATs affecting plant-length in chromosome No. 1,2,6,7,8,9 and 12. In addition, these CRATs were different by growth stages. As a result of cluster analysis, the CSSLs were classified into some groups by its patterns of the elongation rate. Thus, many chromosome regions involve in plant-length regulation as time specifically.
