Flax lines of hybrid origin homozygous for genes of chlorophyll coloration and other morphological traits in the VIR flax genetic collection

Abstract

Due to climate change and the industrialization of agriculture, the role of genetic collections is increasing. The paper characterizes 41 flax lines with mutations regarding chlorophyll coloration from the VIR genetic collection: 5 parental lines created on the basis of the VIR global flax collection, and 36 recombinant ones.Among the 36 created recombinant lines, homozygous for two or more genes of morphological traits, there are those with chlorophyll deficiency and differences in anthocyanin color, stem shape and ciliation of the septa of the boll. Anthocyanin coloration and other morphological features were controlled by one or two of the 22 genes identified by us. Four of the recombinant lines were also homozygous for two or three independent chlorophyll coloration genes.It was established that the genes of chlorophyll coloration and 22 genes controlling other morphological features act independently.The ygp1 and ygp2 genes do not have a significant effect on most economically valuable traits, except for early flowering, and can be used for labeling varieties.The genes s1, YSED1, ysed2 and rs1, which determine the yellow seed color, are necessary for the creation of flax varieties for food purposes, which makes the 11 lines based on these genes in demand for breeding purposes.In flax, the molecular genetic function of none of the chlorophyll coloration genes is known, so the created genetic collection will be in demand to solve this problem.

Keywords

• flax linseed
• <i>linum usitatissimum</i>
• genetic collection
• chlorophyll coloration genes
• chloroplast genes
• multiple marked lines