Heterodera Avenae

	Heterodera Avenae ''Heterodera avenae'', the cereal cyst nematode or European cyst nematode, is a plant pathogen and an obligate parasite of cereal crops including barley, oats, wheat and rye. Cereal crops infected with this nematode are more susceptible to infection by fungal diseases such as rhizoctonia root rot. Life cycle This microscopic nematode exhibits sexual dimorphism. The female is rounded and white and measures 680 by 930 micrometres. The male is vermiform and transparent and measures 40 by 1300 micrometres. The Egg (biology), eggs are oval and the vermiform larvae moult four times. The second instar larvae are mobile and can travel distances of up to thirty centimetres, looking for and invading roots of suitable host species. Here they develop, growing into sedentary bottle-shaped third instar larvae and rounded fourth instar ones. These then develop into either females or males and mating takes place. The female retains the majority of the several hundred eggs she produces inside her ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Wollenweber Louis r LudwigAugust Wollenweber (5 December 1807 – 25 July 1888) was a German-American German-language journalist and a writer of prose and poetry in Pennsylvania Dutch. Biography Germany As he was orphaned early in life, he was compelled to give up any hope for higher education. He was educated at Speyer for the trade of a printer. Upon the completion of his term of apprenticeship, he traveled through Germany as a journeyman worker, finally settling in Homburg and working for the ''Deutsche Tribüne''. He was compelled to emigrate to the United States, via France and the Netherlands, in consequence of his being one of the agitators of the " Hambacher Volksfest." The journal he was working on was suppressed by the German Diet as well. Pennsylvania After his arrival in Philadelphia, he was first engaged on J. G. Wesselhöft's ''Schnellpost''. He later founded a new German-language paper, ''Der Freimuethige'' (The Free-Thinker), which lasted only for a short time. He subseque ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Egg (biology) An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the animal hatches. Most arthropods such as insects, vertebrates (excluding live-bearing mammals), and mollusks lay eggs, although some, such as scorpions, do not. Reptile eggs, bird eggs, and monotreme eggs are laid out of water and are surrounded by a protective shell, either flexible or inflexible. Eggs laid on land or in nests are usually kept within a warm and favorable temperature range while the embryo grows. When the embryo is adequately developed it hatches, i.e., breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering. The largest recorded egg is from a whale shark and was in size. Whale shark eggs typically hatch within the mother. At and up to , the o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Cereal Diseases A cereal is any grass cultivated for the edible components of its grain (botanically, a type of fruit called a caryopsis), composed of the endosperm, germ, and bran. Cereal grain crops are grown in greater quantities and provide more food energy worldwide than any other type of crop and are therefore staple crops. They include wheat, rye, oats, and barley. Edible grains from other plant families, such as buckwheat, quinoa and chia, are referred to as pseudocereals. In their unprocessed whole grain form, cereals are a rich source of vitamins, minerals, carbohydrates, fats, oils, and protein. When processed by the removal of the bran and germ the remaining endosperm is mostly carbohydrate. In some developing countries, grain in the form of rice, wheat, millet, or maize constitutes a majority of daily sustenance. In developed countries, cereal consumption is moderate and varied but still substantial, primarily in the form of refined and processed grains. Because of this dietary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]