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Effect of elevated CO2 on growth and yield of French bean (Phaseolus vulgaris L.) genotypes

DOI: 10.5958/0976-0571.2015.00012.0    | Article Id: LR-3181 | Page : 72-76
Citation :- Effect of elevated CO2 on growth and yield of French bean (Phaseolus vulgaris L.) genotypes .Legume Research.2015.(38):72-76
N.K. Srinivasa Rao*, R.H. Laxman, and H. Mamatha nksraoiihr@gmail.com
Address : Division of Plant Physiology and Biochemistry, Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bangalore–560 089, India.

Abstract

The elevated CO2 levels are known to increase crop growth. French bean (Phaseolus vulgaris L.) being an important cool season legume vegetable, with C3 CO2 fixation mechanism, is likely to be benefitted by higher CO2 level. Hence, a study was initiated to quantify the response of two promising French bean cultivars, viz., Arka Komal and Arka Anoop to elevated CO2 concentrations of 550 ppm as compared to ambient levels of 380 ppm in open top chambers (OTCs). Significantly higher leaf area, root dry weight and total dry matter accumulation was recorded at 550 ppm elevated CO2 which was translated into significant increase in number of flowers and subsequently pod yield in cv. Arka Anoop compared to Arka Komal.

Keywords

Dry matter Elevated CO2 Leaf area Phaseolus vulgaris Pod yield.

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