Abstract
In order to develop a new variety of fiber hemp(Cannabis sativa L.) with non-drug type, the authors reviewed several literatures about marihuana or hemp, and bred a new variety with non-drug type. This variety was named as 'Cheungsam' and resitered as a recommening variety in Korea. This paper introduce the breeding history and characteristics of the fiber hemp variety 'Cheungsam' with non-drug type. Among the 44 introduced germplasms from CPRO, Netherland, only IH3 was suitable variety because of it's good traits including low THC content, similar flowering days to Korean local variety and good fiber yield. IH3 and Korean local variety were crossed to develop a new non-drug type hemp, and we developed a new variety named 'Cheungsam'. This variety have good plant characteristics and fiber yield with low THC content. The average fiber yield of 'Cheungsam' was 190kg/10a in regional fiber yield trials, which was 7% higher than that of 'Korean local variety'. 'Korean local variety' contains 1.74% of THC which is the psychoactive ingredient and 0.57% of CBD the anti-psychoactive ingredient, thus that cultivar was sorted to drug type hemp. But 'Cheungsam' contains 0.34% of THC and 1.34% of CBD so that sorted as a non-drug type hemp. If farmers want to harvest more seed of 'Cheungsam', using female seed of IH3 is better than that of the dioecious seed because of the high seed yield.