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Cotton wool. Cotton wool consists of silky fibers taken from cotton plants in their raw state. Impurities, such as seeds, are removed and the cotton is then bleached using hydrogen peroxide or sodium hypochlorite and sterilized. It is also a refined product (absorbent cotton in U.S. usage) which has medical, cosmetic and many other practical uses.
Without resistance, Puccinia schedonnardii can cause a 50% yield loss, which is why generally resistant varieties are so widely used. Cotton is one of the most important textile fibers, and the United States is ranked third in cotton production. [8]
Wool can absorb large amounts of water, but mats if washed in high temperatures. All silks become brittle with age, but weighted silks decay more quickly, and thus must be handled with extreme care. [14] Additionally, some silks, once wet, can be permanently spotted, creating water stains that are difficult to remove.
Although cotton plant resistance may be to a particular Xcm race, it reveals how the physiological characteristics of plants can effectively aid in plant resistance to diseases and pest attacks. Cloning of the R genes can be used to develop multi genetic resistance. Further research should focus on establishing the relationships between cotton ...
Indian cotton textiles were the most important manufactured goods in world trade in the 18th century, consumed across the world from the Americas to Japan. [28] The most important center of cotton production was the Bengal Subah province, particularly around its capital city of Dhaka. [29]
Cotton (from Arabic qutn) is a soft, fluffy staple fiber that grows in a boll, or protective case, around the seeds of the cotton plants of the genus Gossypium in the mallow family Malvaceae. The fiber is almost pure cellulose, and can contain minor percentages of waxes, fats, pectins, and water. Under natural conditions, the cotton bolls will ...
Beginning of crop cover: 10% of plants meet between rows 32: 20% of plants meet between rows 33: 30% of plants meet between rows 34: 40% of plants meet between rows 35: 50% of plants meet between rows 36: 60% of plants meet between rows 37: 70% of plants meet between rows 38: 80% of plants meet between rows 39: Canopy closure: 90% of the plants ...
An ophthalmoscopic view of the retina showing advanced signs of diabetic retinopathy including two pale cotton wool spots. Cotton wool spots are opaque fluffy white patches on the retina of the eye that are considered an abnormal finding during a funduscopic exam (also called an ophthalmoscopic exam). [1] Cotton wool spots are typically a sign ...