Effect of plant tissues on DNA quantity and quality of barley (Hordeum vulgare) validating through PCR technique

Abstract

The use of molecular techniques to deal with plant molecular breeding requires the extraction of genomic DNA in good quantity and quality, which can be influenced by method of extraction and source of DNA (plant species, plant part or tissues). However, this research focuses on plant tissue source and tried to describe the quality and quantity of DNA isolated from different tissues of barley crop. CTAB protocol was used for the isolation of DNA and both the quality and quantity of this DNA was validated through gel electrophoresis, Qubit quantification and PCR amplifications. The result showed that DNA could be successfully extracted from all tissues of plants and the yield of DNA obtained was variable ranging from 179ng l-1 in stem to 750ng l-1 in young leave. Band intensity of genomic and PCR amplified DNA was good for DNA isolated from young and matured leave. Faint band was observed in the PCR amplification for DNA isolated from stem but no to unreliable amplification was obtained for seeds and roots, respectively. Thus, for any molecular technique in barley crop research, the best tissue for DNA isolation using modified CTAB, is young or matured leave and alternatively stem can be used as DNA source.