ゲンノショウコGeranium thunbergiiの栽培と育種(第4報) : 生育およびタンニン含量におよぼす無機要素の影響

概要

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The effects of mineral elements (N, P, K, Ca, Mg and S) on the growth and tannin content of Geranium thunbergii were examined by hydroponics using a Hoagland and Arnon solution. This experiment gave the following results. 1) More plants died when the soil Ca was deficient: the final viability fell to 33%. 2) Branching tended to be less when N or Ca was deficient. 3) The stems tended to be shorter when mineral elements other than S were deficient. 4) The dry weight of aerial parts was generally less when mineral elements other than S were deficient. The decrease was more pronounced when either N or Ca was deficient. 5) Their tannin content was lower when Ca, N or Mg was deficient. These results showed that a deficiency in Ca, N, P or K significantly reduced the growth of G. thunbergii while that in Mg, N or Ca decreased the tannin content. It is suggested that we must pay more attention to the mineral elements in the soil used for the cultivation of G. thunbergii as the Mg, N and Ca deficiencies especially degrade the quality of the crude drugs.
日本生薬学会の論文
1991-03-20