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  2. Autumn leaf color - Wikipedia

    en.wikipedia.org/wiki/Autumn_leaf_color

    These are carotenoids and they provide colorations of yellow, brown, orange, and the many hues in between. The carotenoids occur, along with the chlorophyll pigments, in tiny structures called plastids, within the cells of leaves. Sometimes, they are in such abundance in the leaf that they give a plant a yellow-green color, even during the summer.

  3. Why are maple leaves turning yellow and dropping early? A ...

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  4. 7 Reasons Your Peace Lily Leaves Are Turning Yellow ... - AOL

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    While these plants are relatively low maintenance, it’s not unusual for peace lily leaves to turn yellow here and there due to stress, pests, or other issues. This guide explains the most common ...

  5. Plant senescence - Wikipedia

    en.wikipedia.org/wiki/Plant_senescence

    Plant senescence is the process of aging in plants. Plants have both stress-induced and age-related developmental aging. [1] Chlorophyll degradation during leaf senescence reveals the carotenoids, such as anthocyanin and xanthophylls, which are the cause of autumn leaf color in deciduous trees. Leaf senescence has the important function of ...

  6. Chlorosis - Wikipedia

    en.wikipedia.org/wiki/Chlorosis

    An albino corn plant with no chlorophyll (left) beside a normal plant (right) In botany , chlorosis is a condition in which leaves produce insufficient chlorophyll . As chlorophyll is responsible for the green color of leaves, chlorotic leaves are pale, yellow, or yellow-white.

  7. Why Are My Hibiscus Leaves Turning Yellow? - AOL

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  8. List of pests and diseases of roses - Wikipedia

    en.wikipedia.org/wiki/List_of_pests_and_diseases...

    The spots, which may be as much as 12 mm across, are generally circular and have an irregular edge often with a yellow halo. Leaves frequently turn yellow and fall early. Sometimes new leaves are produced, and these may also become affected. Continual defoliation will cause weakness, dieback or death of the plant. Some very susceptible species ...

  9. Iron deficiency (plant disorder) - Wikipedia

    en.wikipedia.org/wiki/Iron_deficiency_(plant...

    Chlorosis occurs in younger leaves because iron is not a mobile element, and as such, the younger leaves cannot draw iron from other areas of the plant. Over time, the yellowing may even turn a pale white or the whole leaf may be affected. [4] Iron deficient plants may overaccumulate heavy metals such as cadmium. [5]

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