Leaf photosynthetic

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  • Since the 1930s, the USDA (U.S. Department of Agriculture) Forest Service’s International Institute of Tropical Forestry (the Institute) has studied mahogany and its management. In the 1960s, F.B. Lamb, the author of the classic book on mahogany (1966), was an Institute collaborator. Before gene flow and genetic erosion became popular terms, my predecessor Frank Wadsworth established a gene bank at the Luquillo Experimental Forest.

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  • Little is known about the response of sweet sorghum to water stress. Therefore, the aim of this study was to characterize sweet sorghum physiological water use efficiency (WUE) under progressing water stress conditions, with emphasis on the canopy scale as compared with the leaf scale.

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  • Understanding the mechanisms of how environmental factors limit species distribution along environmental gradients is a central question in ecology. This study aimed to understand species acclimation in view of photosynthetic parameters in an arid mountainous region.

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  • The use of Jatropha (Jatropha curcas L.) as a source of biofuel is documented. The physiological characteristics and growth studies of Jatropha have received less attention. In the present study, we measured leaf gas exchange with an infrared gas analyzer for red (immature) and green (mature) leaves of Jatropha curcas in response to various environmental conditions including photosynthetic photon flux density (PPFD), vapor pressure difference, and temperature.

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  • Similarly, leaf pigment content (SCMR values) also exhibited significant intergenotypic differences, ranging from 35.23 (Mysore local) to 42.13 (V1) and correlating positively with chlorophyllous palisade tissue in the mesophyll and photosynthetic rates. Ultimately, this manifested in leaf yields.

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  • Life on Earth is dependent on sunlight. In the process known as photosynthesis, plants, algae and certain bacterias are capable of using this source of energy to drive the synthesis of organic compounds. The oxygenic photosynthesis results in the release of molecular oxygen and the removal of carbon dioxide from the atmosphere that is used to synthesize carbohydrates.

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  • W. Murcott scion, budded onto two rootstocks, was evaluated under high pH conditions supplied with different Fe levels. Plant dry weight, leaf area, iron chlorosis symptom scale, leaf chlorophyll concentration, net photosynthetic rate, and ferric-chelate reductase (FCR) activity variables were investigated under high pH conditions.

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  • Surface sterilized seeds of black cumin (Nigella sativa L.) were soaked in 10-6, 10-5, or 10-4 M aqueous solution of gibberellic acid (GA3) for 5, 10, or 15 h and sown in pots with sandy loam soil.

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  • THE CONVERSION OF SOLAR ENERGY to the chemical energy of organic compounds is a complex process that includes electron transport and photosynthetic carbon metabolism (see Chapters 7 and 8). Earlier discussions of the photochemical and biochemical reactions of photosynthesis should not overshadow the fact that, under natural conditions, the photosynthetic process takes place in intact organisms that are continuously responding to internal and external changes. This chapter addresses some of the photosynthetic responses of the intact leaf to its environment....

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  • The results showed that application of fertilizers enhanced the growth, physiology, and quality of both flower species. The growth characteristics and quality of both flower species in COF treatment were higher than those in other fertilizer treatments. Specifically, treatment of COF stimulated growth of lateral branch, number of leaves, leaf chlorophyll value and photosynthetic rate of both species. In addition, the highest flower diameters, number of flowers/plants, and flower longevity were observed in COF treatment.

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