Titlebook: Ecophysiology of Economic Plants in Arid and Semi-Arid Lands; Gerald E. Wickens Book 1998 Springer-Verlag Berlin Heidelberg 1998 Anpassung

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Arid and Semi-arid Environments of the World, more than 1.2 billion people, or 20% of the world’s population, a population that is now expanding at a far greater rate than the environment can support. The pressure on the land is such that 50 000–70 000 km. of useful productive land is being lost each year through desertification. Furthermore,

宣稱

Ecophysiology, Nitrogen Fixation and Plant Stress,ngs (1957) who first formalised the union with the terms ‘physiological ecology’ and ‘ecological physiology’. The term ‘eco-physiology’, however, was first introduced in 1962 at UNESCO’s Montpellier Symposium where it was defined by Eckardt (1965) in the English summary of his paper as follows:

安裝

Water Stress,dity or as vapour pressure. Tissue dehydration may also be measured by changes in tissue water potential or changes in tissue water content (percentage of tissue weight). However, individual tissues differ widely in water contents at full turgidity. Thus, a fully turgid leaf may contain 85% water, w

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PARA

PARA

Photosynthesis, Harborne (1988), among others. There are considerable variations to be found in the C3 and C4 pathways; to date these have been most widely investigated in the Gramineae — the CAM pathway is not known in the Gramineae (Hattersley and Watson 1992).

耐寒

NATAL

HUMP

Michael Butsch,Valerio Rescigno greater thermostability of certain enzymes that may serve a genotype at both high and low temperatures (Arnon 1992). An added complication could be the photosynthetic pathway followed, although it would be premature to suggest any definite relationship. As Nobel (1996) has pointed out, Crassulacean