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Effect of Temperature
Certain plants such as the winter rye (Secale cereale) and the biennial strain of henbane (Hyoscyamus Niger) require exposure to low temperature conditions before they start flowering. A phenomenon known as 'vernalization' or 'Yaronization' was noted by the Russian Plant physiologist Gustav Gussner in 1915. Here also embryo or shoot apex seems to be the site of perception and the role of a hormone 'Vernalin" is suggested. Unfortunately like florigen, vernalin has been still elusive. Gibberellin treatment is known to substitute for cold treatment.
The epicardial coronary artery system consists of the left and right coronary arteries, which normally arise from ostia located in the left and right sinuses of Valsalva, respectiv
Stratification of Vegetation - Qualitative Characters Stratification of vegetation is another important feature of plant communities. There are different vertical strata in di
Dietary Management The golden rule in the dietary management of ally fever is "feed the fever". Considering that enteric (typhoid) fever is accompanied by anorexia,
how oviary work
What are CD4 lymphocytes? What is the relationship between these cells and HIV? How does HIV replicate? CD4 lymphocytes are T helper lymphocytes that there in their plasma memb
LDL is heterogeneous (Krauss and Burke, 1982) and can be separated on density gradient ultracentifugation into subclasses that vary in size, density and lipid content. In healthy s
What is pcr?
Eczema and Dermatitis: Eczema and Dermatitis are a common problem all over the world. Their incidence is 2-3 per cent of all medical problems seen in practice (about 30 per
cassification of mode of nutrition
Sporophytic Incompatibility The recognition and rejection reactions in a SSI system occur on the stigma surface, placing barriers for pollen germination or penetration of poll
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