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Vernalization is the process whereby flowering is promoted by a cold treatment given to a germinated seed or to a vegetative plant. Which of the following statements is true?
Apiaceae or Umbelliferae: The "archtypal" carrot family pollen is tricolporate and peanut-shaped with obvious internal thickenings surrounding a large endopore in the equatorial region, with short straight furrows. Umbelliferae pollen is often stirate, but also may be rugulate or psilate.
a Siberian Institute of Plant Physiology and Biochemistry, Siberian Division, Russian Academy of Sciences, ul. Lermontova 132, Irkutsk, 664033 Russia; fax: 7 (3952) 51-0754; e-mail: makar@sifibr.irk.ru
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Developmentally regulated proteoglycans and glycoproteins of the plant cell surface J. PAUL KNOX Centre for Plant Biochemistry and Biotechnology, University of Leeds, Leeds, LS2 9JT, United Kingdom SERIAL REVIEW 1004 0892-6638/95/0009.1 004/$01 .50.
Most analyses of the O2 sensitivity of germination have focused on nal germination percen- tages and estimated the O2 percentage in air that is required to reduce germination to a given percentage (usually 50%).