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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 ...
For best results, repot your plants in spring and choose a well-draining pot that’s just one or two sizes larger than the pot your plant is growing in. If the peace lily’s roots are tangled in ...
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.
Lethal yellowing (LY) is a phytoplasma disease that attacks many species of palms, including some commercially important species, such as the coconut and date palm.In the Caribbean, it is spread by the planthopper Haplaxius crudus (former name Myndus crudus) which is native to Florida, parts of the Caribbean, parts of Australia and Central America. [1]
Seed dormancy is an evolutionary adaptation that prevents seeds from germinating during unsuitable ecological conditions that would typically lead to a low probability of seedling survival. [1] Dormant seeds do not germinate in a specified period of time under a combination of environmental factors that are normally conducive to the germination ...
Barochory is seed dispersal by gravity alone in which a plant's seeds fall beneath the parent plant. [8] These seeds commonly have heavy seed dispersal syndromes. [ 13 ] However, heavy seeds may not be a form of seed dispersal syndrome, but a random seed characteristic that has no dispersal purpose.
They begin as small, diamond-shaped lesions and elongate within the veins to become larger and rectangular. Race O's lesions remain within the leaves of the maize plant. [3] [6] Lesion size ranges from 2 to 6 millimeters wide and 3 to 22 millimeters long. [5] Lesions caused by Race T are tan with yellow-green or chlorotic halos.
Scarification is often done mechanically, thermally, and chemically. The seeds of many plant species are often impervious to water and gases, thus preventing or delaying germination. Any process designed to make the testa (seed coat) more permeable to water and gases is known as scarification.
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