Inhibition of seed germination by quinolizidine alkaloids

  title={Inhibition of seed germination by quinolizidine alkaloids},
  author={Michael Wink},
Germination of Lactuca sativa L. was inhibited by mixtures of quinolizidine alkaloids. The alkaloid esters resulted in the strongest inhibition: 6 mM 13-tigloyloxylupanine inhibited germination by 100%, whereas the other lupin alkaloids, such as lupanine and sparteine, gave a 45 and 20% inhibition, respectively. Seedlings of Lupinus albus L., which are not affected by quinolizidine alkaloids, excrete lupanine and 13-tigloyloxylupanine into the surrounding medium by their roots. It is assumed… CONTINUE READING
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