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Early in the study of plant hormones, "phytohormone" was the commonly used term, but its use is less widely applied now. Plant hormones are not nutrients, but chemicals that in small amounts promote and influence the growth, [13] development, and differentiation of cells and tissues. The biosynthesis of plant hormones within plant tissues is ...
The specific name, koenigii, derives from the last name of botanist Johann Gerhard König. The curry tree is also called curry leaf tree or curry bush, among numerous local names, depending on the country. [11] [5] It is known by a variety of names in the Indian subcontinent and South Asia itself. Some of its alternative names are: [citation ...
Helichrysum italicum is a species of flowering plant in the family Asteraceae. It is sometimes called the curry plant because of the strong fragrance of its leaves. [1] Other common names include Italian strawflower and immortelle. It grows on dry, rocky or sandy ground around the Mediterranean. The stems are woody at the base and can reach 60 ...
Gibberellic acid is a very potent hormone whose natural occurrence in plants controls their development. Since GA regulates growth, applications of very low concentrations can have a profound effect while too much will have the opposite effect. [3] It is usually used in concentrations between 0.01 and 10 mg/L. [citation needed]
A germination rate experiment. Plant physiology is a subdiscipline of botany concerned with the functioning, or physiology, of plants. [1]Plant physiologists study fundamental processes of plants, such as photosynthesis, respiration, plant nutrition, plant hormone functions, tropisms, nastic movements, photoperiodism, photomorphogenesis, circadian rhythms, environmental stress physiology, seed ...
On top of the gradual growth of the plant, the image reveals the true meaning of phototropism and cell elongation, meaning the light energy from the sun is causing the growing plant to bend towards the light aka elongate. Plant growth and development are mediated by specific plant hormones and plant growth regulators (PGRs) (Ross et al. 1983). [10]
The Dutch biologist Frits Warmolt Went first described auxins and their role in plant growth in the 1920s. [4] Kenneth V. Thimann became the first to isolate one of these phytohormones and to determine its chemical structure as indole-3-acetic acid (IAA). Went and Thimann co-authored a book on plant hormones, Phytohormones, in 1937.
Growth from any such meristem at the tip of a root or shoot is termed primary growth and results in the lengthening of that root or shoot. Secondary growth results in widening of a root or shoot from divisions of cells in a cambium. [8] In addition to growth by cell division, a plant may grow through cell elongation. This occurs when individual ...