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Predictive dormancy occurs when an organism enters a dormant phase before the onset of adverse conditions. For example, photoperiod and decreasing temperature are used by many plants to predict the onset of winter. Consequential dormancy occurs when organisms enter a dormant phase after adverse conditions have arisen. This is commonly found in ...
True dormancy or inherent (or innate) dormancy is caused by conditions within the seed that prevent germination even if the conditions are favorable. [7] Imposed dormancy is caused by the external conditions that remain unsuitable for germination [8] Seed dormancy can be divided into two major categories based on what part of the seed produces dormancy: exogenous and endogenous. [9]
The plants grew, flowered and created viable seeds of their own. The shape of the flowers differed from that of modern S. stenophylla plants with the petals being longer and more widely spaced than modern versions of the plant. Seeds produced by the regenerated plants germinated at a 100% success rate, compared with 90% for modern plants.
If you want to store your potted fall mums as dormant plants over winter, wait until a few cold nights have started killing off the top vegetation. Trim off the stems about 3-4 inches above the ...
However, not all dormant plants are safe from cold damage. Some plants with very shallow roots, ... You can take advantage of microclimates to site sensitive plants. For example, a south or west ...
They’re just dormant. “Dormant plants are alive,” said Sharon Yiesla, plant knowledge specialist at The Morton Arboretum in Lisle. “They’re just inactive.” Dormancy is a tactical ...
Examples of plant families where morphological dormancy occurs are Apiaceae, Cycadaceae, Liliaceae, Magnoliaceae and Ranunculaceae. [40] [41] Morphophysiological dormancy includes seeds with underdeveloped embryos, and also have physiological components to dormancy. These seeds, therefore, require a dormancy-breaking treatments, as well as a ...
Dormant plants are growing so slowly that pruning wounds remain open much longer than usual. Open wounds are portals for pests and diseases to enter the plant. Wait to prune trees and shrubs until ...