成分含量,生薬の性状および農業形質からみた薬用シャクヤク品種の育成(第1報) : 低開花率により摘花および摘蕾作業の省力が可能になる新品種について

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An increase in the self-sufficiency of peony roots (Paeonia lactiflora Pall.), which are frequently used in Kampo formulae, will be welcomed, because the supply of peony roots is heavily dependent on foreign countries. Therefore, we tried to develop a new variety of medicinal peony with possible labor-saving cultivation and stable quality using clonal selection. As a result, active ingredient content and root yields of No. 518 strain ("518") selected from 53 strains were relatively high (paeoniflorin, 4.42%; albiflorin, 0.53% ; dry root yield, 712kg/10a) compared with those of the other strains. In addition, the flowering rate of "518" was extremely lower (5%) than that of the other strains (32-100%) in 3 years' plants, and there was a negative correlation between flowering rate and number of stems for peony (r=-0.735, p<0.001, n=140). Furthermore, color in the root cross section of "518" was more whitish (L^* value, 79.5) than that of "Kitasaisyo" (74.7) and crude drugs sold in the market (65-73). We concluded that "518" is a new peony variety which would contribute to labor-saving cultivation and stable production of crude drugs with stable quality. The variety name "Beni-shizuka" was given to selected variety "518" and applied as a new peony variety on the basis of the Seeds and Seedlings Act, Japan.
2011-08-20