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  2. Morphine - Wikipedia

    en.wikipedia.org/wiki/Morphine

    Morphine is highly addictive and prone to abuse. [12] If one's dose is reduced after long-term use, opioid withdrawal symptoms may occur. [12] Caution is advised for the use of morphine during pregnancy or breastfeeding, as it may affect the health of the baby. [12] [2] Morphine was first isolated in 1804 by German pharmacist Friedrich Sertürner.

  3. Pepper mild mottle virus - Wikipedia

    en.wikipedia.org/wiki/Pepper_mild_mottle_virus

    Growers must practice good sanitation procedures and only plant clean seeds. Growers must also use caution when handling plants, plants with abrasions or wounds give the virus an opportunity to enter the tissue of the plant. There are no chemical or biological control methods that can be used to control the disease once the plant is infected.

  4. Opium - Wikipedia

    en.wikipedia.org/wiki/Opium

    Opium (also known as poppy tears, or Lachryma papaveris) is the dried latex obtained from the seed capsules of the opium poppy Papaver somniferum. [4] Approximately 12 percent of opium is made up of the analgesic alkaloid morphine, which is processed chemically to produce heroin and other synthetic opioids for medicinal use and for the illegal drug trade.

  5. Papaver somniferum - Wikipedia

    en.wikipedia.org/wiki/Papaver_somniferum

    Papaver somniferum, commonly known as the opium poppy [2] or breadseed poppy, [3] is a species of flowering plant in the family Papaveraceae.It is the species of plant from which both opium and poppy seeds are derived and is also a valuable ornamental plant grown in gardens.

  6. Plant disease - Wikipedia

    en.wikipedia.org/wiki/Plant_disease

    Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [1] Organisms that cause infectious disease include fungi , oomycetes , bacteria , viruses , viroids , virus -like organisms, phytoplasmas , protozoa , nematodes and parasitic plants . [ 2 ]

  7. Leaf spot - Wikipedia

    en.wikipedia.org/wiki/Leaf_spot

    A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides. These discoloured spots or lesions often have a centre of necrosis (cell death). [1]

  8. Blight - Wikipedia

    en.wikipedia.org/wiki/Blight

    Blight is a rapid and complete chlorosis, browning, then death of plant tissues such as leaves, branches, twigs, or floral organs. [1] Accordingly, many diseases that primarily exhibit this symptom are called blights. Several notable examples are: [citation needed]

  9. Morphine - Wikipedia

    en.wikipedia.org/wiki/(+)-Morphine

    In contrast to natural morphine, the unnatural enantiomer has no affinity or efficacy for the mu opioid receptor and therefore has no analgesic effects. To the contrary, in rats, (+)-morphine acts as an antianalgesic and is approximately 71,000 times more potent as an antianalgesic than (−)-morphine is as an analgesic.