Associations between morphological characteristics in F_2 populations of soybean

摘要

In the case of nominal data (senzoric evaluation, morphological or biochemical markers, qualitative characteristics like degree of earliness or lodging, affection by deseases, etc.) it is often desirable to know whether the knowledge of one nominal variable gives some advantage in the process of breeding. As an initial material was F_2 generation after crossing of genotypes Glycine max (L) Merril x Glycine soja ssp. ussuriensis. from the collection in Mendeleum. Cultural species Glvcine max (L.) Merril, is morphologically very diversible with height within a scale 0.3-2 m. On the other hand Glycine soja ssp. ussuriensis. is creeping with narrow leaves and fine-grained. For each F_2 plant the following characters were measured: T-type of trychom's tips, DS -density of trychoms on stems and branches, degree of earliness and lodging. T and DS characters have served as morphological markers.