Gas exchange characteristics in Tectona grandis L. clones under varying concentrations of CO 2 levels

Gas exchange characteristics in Tectona grandis L. clones under varying concentrations of CO 2 levels

Автор: Saravanan S.

Журнал: Журнал стресс-физиологии и биохимии @jspb

Статья в выпуске: 3 т.10, 2014 года.

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The Institute of Forest Genetics and Tree Breeding, Coimbatore, India functioning under the Indian Council of Forestry Research and Education, Dehara Dun, has a long term systematic tree improvement program for Tectona grandis aimed to enhancing productivity and screening of clones for site specific. In the process, twenty clones of T. grandis L. were studied for the physiological parameters and water use efficiency with reference to the elevated CO 2 levels. CO 2 enrichment studies in special chambers help in understanding the changes at individual level, and also at physiological, biochemical and genetic level. It also provides valuable information for establishing plantations at different geographic locations. Considerable variations were observed when the selected 20 clones of T. grandis were subjected to physiological studies under elevated CO 2 conditions (600 and 900 mol mol -1). Eight clones exhibited superior growth coupled with favorable physiological characteristics including high photosynthetic rate, carboxylation and water use efficiency under elevated CO 2 levels. Clones with minimal variation in physiological characteristics under elevated levels of CO 2 suggest their ability to overcome physiological stresses and adapt to varying climatic conditions.

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Tectona grandis, elevated co 2, physiological parameters, water use efficiency

Короткий адрес: https://sciup.org/14323881

IDR: 14323881

Список литературы Gas exchange characteristics in Tectona grandis L. clones under varying concentrations of CO 2 levels

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