Info

100%

Block 1 Block 2 Block 3 Block 4 Block 5

Block 1 Block 2 Block 3 Block 4 Block 5

□ Carvacrol ■ Thymol □ 7-terpinen ■ Linalool □ Sesquiterpentyp ■ "Majorantyp"

Figure 7.4 Chemotypical segregation of five single plant offsprings of Origanum vulgare ssp. crossings (Marn et al, 1999).

Biosynthesis

Knowledge on the biosynthesis of the essential oil compounds and their inheritance is useful for a more effective selection and establishment of a targeted breeding programme (Figure 7.5). In contrast to e.g. Mentha sp. where the biosynthesis and inheritance of the monoterpenes is known in detail (Croteau and Gershenzon, 1994), only some key enzymes have been identified so far for carvacrol, thymol and linalool synthesis in Origanum (Croteau and Karp, 1991). Perhaps some parallelism could be seen with the biogenetic sequence in Thymus vulgaris (Gouyon and Vernet, 1982) since thymol, carvacrol and linalool are also the main compounds. As regards O. majorana, Novak et al. (2001) studied cis- and trans-sabinene hydrate in several occassions (Figure 7.6).

Figure 7.5 "A plant breeding program ... requires a basic knowledge of the inheritance of at least the major essential oil compounds" (Murray and Reitsema, 1954).

1...c/s-sabinene hydrate 2...frans-sabinene hydrate 3...c/s-sabinene hydrate acetate 4...sabinene

Aromatherapy Arsenal

Aromatherapy Arsenal

Get All The Info And Help You Need To Use Aromatherapy In The Right Way For All The Amazing Benefits This Book Is One Of The Most Valuable Resources In The World When It Comes Ways To Arm Yourself With Knowledge For Healing With Aromatherapy Aromatherapy - a word frequently associated with calm, odoriferous and relaxing surroundings.

Get My Free Ebook


Post a comment