Analysis of accumulation of cadmium in seeds of selected breeding linseed (Linum usitatissimum L.) genotypes cultivated for medicinal purposes
Abstract
The objective of the study was genetic and breeding screening of selected varieties and
hybrids of oil flax for in-seed cadmium fixing ability. Seven parental varieties as well as
nineteen F1 and F2 hybrids were analyzed. The varieties were crossed in di-allelic scheme,
according to the Griffing method II. Significant differences were found in the activity of
fixing cadmium from the soil between analysed flax parental forms and hybrids. High variability
of tested genotypes, calculated by the variance coefficient, was observed in F1 generation.
The variability of tested genotypes in the F2 generation was two times lower.
The analysis of general combining ability (GCA) showed that Chinese cultivar Shanxi reduced
significantly the fixing cadmium from the soil in combinations of F1 generation
crossing. However, the effects of the specific combining ability (SCA) of tested hybrids
to reduce the cadmium content in seeds were statistically insignificant. The analysis of
genetic components variance showed no significance both in domination and cumulative
genes which suggests a complex inheritance pattern of the tested trait.