Get An Integrated System of Classification of Flowering Plants PDF

By Arthur Cronquist

ISBN-10: 0231038801

ISBN-13: 9780231038805

-- Natural History

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These Ca2+-binding proteins phosphorylate and activate the transcription factors, which mediate cellular responses. Ca2+ signal also induces the salt overly sensitive (SOS) signaling pathway which is required for ion homeostasis. See Chapter 19, p 421.  19. (a) Performance of Sub1 introgression lines under field conditions. Fourteen day old seedlings were transplanted in the field and completely submerged 14 days later, for a period of 17 days. Photo was taken about 2 months after desubmergence.

Some of the most common abiotic stresses are wide fluctuation in the environmental conditions, soil moisture availability, high evaporation, inundation of the field, atmospheric temperature, periodicity variations, frost and cold injury, soil physico-chemical status, non-availability of nutrients and heavy metal toxicity. Understanding the physiological basis of such stresses, their genetic basis of tolerance, gene manipulation and mitigating the stresses agronomically, are some of the available technological options.

The normal physiology of the plant gets affected and plant maturity is accelerated. In some cases, plants shed leaf/flower/fruit or dry-up non productive tillers and even become sterile to overcome the unprecedented stress. In practical agriculture, such heat stress inflicts enormous crop losses. Due to global weather change, the frequency of heat stress is predicted to increase in different parts of the world. Rates of photosynthesis and respiration increase with an increase in temperature until a threshold maximum photosynthesis level is achieved.

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An Integrated System of Classification of Flowering Plants by Arthur Cronquist

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