physiological drought

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• Physiological plant disorders — are caused by non pathological disorders such as poor light, weather damage, water logging or a lack of nutrients, and affect the functioning of the plant system. Physiological disorder are distinguished from plant diseases caused by pathogens,… …   Wikipedia

• Physiological and molecular wheat breeding — Plant Breeding is art and science of improving the heredity of plants for benefit of mankind. In Evolutionary concept, plant breeding is merely a continuation of the natural evolution of the crop species, changing its course of direction in the… …   Wikipedia

• drought spot — noun : an external physiological disorder of fruits caused by a boron deficiency …   Useful english dictionary

• dormancy — /dawr meuhn see/, n. the state of being dormant. [1780 90; DORM(ANT) + ANCY] * * * ▪ biology Introduction       state of reduced metabolic activity adopted by many organisms under conditions of environmental stress or, often, as in winter, when… …   Universalium

• Irrigation in viticulture — A vineyard with a drip irrigation system running along the bottom of the vines The role of irrigation in viticulture is considered both controversial and essential to wine production. In the physiology of the grapevine, water is a vital component …   Wikipedia

• tree — treelike, adj. /tree/, n., v., treed, treeing. n. 1. a plant having a permanently woody main stem or trunk, ordinarily growing to a considerable height, and usually developing branches at some distance from the ground. 2. any of various shrubs,… …   Universalium

• Tree — /tree/, n. Sir Herbert Beerbohm /bear bohm/, (Herbert Beerbohm), 1853 1917, English actor and theater manager; brother of Max Beerbohm. * * * I Woody perennial plant. Most trees have a single self supporting trunk containing woody tissues, and in …   Universalium

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• plant disease — ▪ plant pathology Introduction       an impairment of the normal state of a plant that interrupts or modifies its vital functions.       All species of plants, wild and cultivated alike, are subject to disease. Although each species is… …   Universalium

• Gaia hypothesis — The study of planetary habitability is partly based upon extrapolation from knowledge of the Earth s conditions, as the Earth is the only planet currently known to harbour life. The Gaia hypothesis, also known as Gaia theory or Gaia principle,… …   Wikipedia

• Xerophyte — The Joshua tree is an example of a xerophyte. A xerophyte or xerophytic organism (from Greek xero dry, phuton plant) is a plant which has adapted to survive in an environment that lacks water, such as a desert. Xerophytic plants may have adapted… …   Wikipedia