Description[ edit ] C. It has a strong taproot. The flowers are yellow-white, 2. Flower of tea plant The seeds of C.

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Description[ edit ] C. It has a strong taproot. The flowers are yellow-white, 2. Flower of tea plant The seeds of C. Older leaves are deeper green. Different leaf ages produce differing tea qualities, since their chemical compositions are different. Usually, the tip bud and the first two to three leaves are harvested for processing.

This hand picking is repeated every one to two weeks. In , Chinese scientists sequenced the genome of C. Tea plants prefer a rich and moist growing location in full to part sun, and can be grown in hardiness zones 7 — 9. However, the clonal one is commercially cultivated from the equator to as far north as Cornwall and Scotland on the UK mainland.

Tea plants will grow into a tree if left undisturbed, but cultivated plants are pruned to waist height for ease of plucking. Two principal varieties are used, the small-leaved Chinese variety plant C. Chinese teas[ edit ] The Chinese plant is a small-leafed bush with multiple stems that reaches a height of some 3 m.

It is native to southeast China. The first tea plant variety to be discovered, recorded, and used to produce tea dates back 3, years ago, it yields some of the most popular teas. It is also distributed in Guangxi province, China. Tea from here is rich and full-bodied. In Assam, the first tea estate of India was established, in Darjeeling is from the cool and wet Darjeeling region, tucked in the foothills of the Himalayas.

Tea plantations reach 2, metres. The tea is delicately flavoured, and considered to be one of the finest teas in the world. First spring flush teas are light and aromatic, while the second summer flush produces tea with a bit more bite. The third, or autumn flush gives a tea that is lesser in quality. Nepali tea is also considered to be similar to the tea produced in Darjeeling, mostly because the eastern part of Nepal, where a large amount of tea is produced, has similar topography to that of Darjeeling.

Nilgiri is from a southern region of India almost as high as Darjeeling. Grown at elevations between 1, and 2, m, Nilgiri teas are subtle and rather gentle, and are frequently blended with other, more robust teas.


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A possible mechanism for the adsorption has been discussed. Comparisons between means were performed using analysis of variance ANOVA followed by Students Standard Newman-Keuls post hoc analysis to determine statistical significance. Dianthraquinone glucosides are the main bioactive phytochemicals present in leaves and pods of senna. Methods are required to reuse fallen leaves, branches, stem bark and pods when they start getting all over lawn. Physicians should strictly abide by the medication requirements in the Pharmacopoeia, pay attention to rational compatibility, appropriate dosage,correct usage and appropriate processing, control the dosage below 15 g to avoid excessive intake, strictly control the course of treatment to avoid accumulated poisoning caused by long-term administration. In conclusion, Cassia alata L. Cytogenetic study of some Thai species of flowering plants However, understanding how environmental heterogeneity influences genetic variation is difficult because the effects of gene flow, drift and selection are confounded.

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