Beiträge zur Frage der Biogenese sekundärer Stoffwechselprodukte dargestellt an Mentha piperita L. und an Fagopyrumarten

The effects of different nitrogen and phosphorus doses on essentialoil components of some Mentha genotypes

“…The lowest value was observed in samples without nitrogen treatment (3.41%) in the first year and in 50 kg/ha nitrogen treatment (6.31%) in the second year (Table 5). These findings were similar to results of studies indicating varying essential oil compositions with fertilization (Ahlgrimm, 1956;Gopichand et al, 2013) and were different from the results of studies reporting decreased pulegone contents with increasing nitrogen doses (Court et al, 1993) and indicating insignificant effects of different nitrogen doses on essential oil components (Baranauskiene, 2003).…”

Effects of Light and Temperature on the Monoterpenes of Peppermint

“…There are many reports (e.g. 1,3,12,18,19,23,28,31) that peppermint oil varies from one growing region to another, from year to year, and as a function of such factors as shading, fertilization, water balance of the plants, and date of harvest.…”

Über die Bedeutung der Stiekstoffverbindungen für die stoffwechselphysiologischen Beziehungen zwischen Parasit und Wirt am Beispiel Reblaus - Rebe.

“…Bei den beiden ersten Arbeitsbypothesen muf^ aber beruckslchtlgt werden, daR die Ursadie fiir die Abwanderung der Tiere audi prlmiir die mani;i-lliafte Verwertbarkeit der Nahrung sein kann. Gegen eine derartige Erkliirung sprechen jedoch die Untersuchungen von SCHALLER (1959) (SHIROYA, SniROYA und HATTORI 1935, CAL.IACHJAN und BOJARKIN 1955, AHLGRIMM 1956, SPRI-CHFR 1956, FORTINI 1956, HENKI: 1958, SCHWARZE 1959 u. a.).…”