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Some explants, like the root tip, are hard to isolate and are contaminated with soil microflora that becomes problematic during the tissue culture process. Certain soil microflora can form tight associations with the root systems, or even grow within the root. Soil particles bound to roots are difficult to remove without injury to the roots ...
They may also acquire populations of nematodes, such as root-knot nematodes and Pratylenchus species, which cause root lesions. [8] Pathogens include the fungus Myrothecium roridum and bacteria such as Pseudomonas cichorii, Erwinia chrysanthemi, and Xanthomonas campestris, which can all cause leaf spot. Colletotrichum fungi can cause ...
Plant hormones, termed auxins, are often applied to stem, shoot or leaf cuttings to promote adventitious root formation, e.g., African violet and sedum leaves and shoots of poinsettia and coleus. Propagation via root cuttings requires adventitious bud formation, e.g., in horseradish and apple. In layering, adventitious roots are formed on ...
A piece of the stem or root of the source plant is placed in a suitable medium such as moist soil. If the conditions are suitable, the plant piece will begin to grow as a new plant independent of the parent, a process known as striking. A stem cutting produces new roots, and a root cutting produces new stems. Some plants can be grown from leaf ...
Micropropagation often produces more robust plants, leading to accelerated growth compared to similar plants produced by conventional methods - like seeds or cuttings. Some plants with very small seeds, including most orchids, are most reliably grown from seed in sterile culture.
Too much moisture is what causes leafy greens to turn soft and rot. Here are four ways to keep moisture at a minimum: Buy only fresh greens. If you can easily see rotten and slimy pieces, choose ...
A man who carried out a "vicious and violent attack" during riots has been jailed for almost three years. Ameer Khalile, 25, stamped on his victim's head during public disorder that broke out in ...
The rhizosphere is the thin area of soil immediately surrounding the root system. It is a densely populated area in which the roots compete with invading root systems of neighboring plant species for space, water, and mineral nutrients as well as form positive and negative relationships with soil-borne microorganisms such as bacteria, fungi and insects.
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