Oct./Dec. 1994 4(4) populations (at least once every 5 years). 2) Focus surveys on cultivars shown to be promising sources of taxol and taxanes. 3) Continue to sample clippings yields annually for plants more than 3 years old. 4) Study the potential for harvesting other plant organs and whole plants for taxol along with clippings. Questions to be answered include: a) What would be the optimum p...

sent Cephalotaxus to Europe where it was received with interest and appreciation.2 Siebold grew five different Cephalotaxus in his own garden in Japan, along with many other plants he had discovered, cultivating them for their beauty and for evaluation as garden plants. Today, although plum yews are widely considered some of the most beautiful and useful of evergreen conifers, their potential a...

BACKGROUND Species of Cephalotaxus (the plum yews) produce nematotoxic compounds of unknown identity. Consequently, bioassay-guided fractionation was employed to identify the compound(s) in Cephalotaxus fortunei twigs and leaves with activity against plant-parasitic nematodes. RESULTS A crude alkaloid extract, particularly drupacine, was responsible for much of the nematotoxicity. The ED50 of...

Jersey,anexperimentaldeerrepellent,wasfieldtestedagainst2commercialrepellentsonJapaneseyews(Taxuscuspidata) near Ithaca, New York, during spring 1990. In Experiment 1, plots (n = 24) of 4 individually-potted yews were established, with 2 yews at each plot randomly treated with Jersey and 2 left as controls. Plots of 4 (1 x 4, n =12) and 16 (4 x 4, n = 2) plants were used in Experiment 2, with i...

UNTIL RECENTLY, retirement from the workforce R&S regarded as a change that took place at a pred&ermmed age, fixed by law or regululatlon There usually nas no choxe ns to the age of retxement, and early nlthdrawal from the markforce usually meant n sharp redo&on m Income or even, m extreme cases, a total loss of penslo* benefits In recent years, however, many mdustrud countrms hnve mcorporated ...

Endophytic fungi live within the tissues of their host plants but, even for fungi, there's no such thing as a free lunch. Some of them pay the rent by producing compounds that protect the host against invading pathogenic microbes. These scanning electron micrographs show three species of endophytic fungus that have mutually beneficial relationships with plants of the family Taxaceae (yews and t...