Extracting high-quality RNA from grapevine tissues are particularly difficult due to high levels of polyphenolics and polysaccharides,or other compounds that bind and/or coprecipitate with RNA.The modified SDS/phenol,guanidinum thiocyanate and commercial total RNA extraction kit were applied to isolate high purity and integrity RNA from grapevine.The normal component of the total RNA isolation method is the addition of polyvinylpyrrolidone(PVP)andβ-mercaptoetha-hol in the extraction buffer to SDS/phenol an...