Atmospheric carbon dioxide enrichment induced modifications in canopy radiation utilization, growth and yield of chickpea [Cicer arietinum L.)]

摘要: Abstract Open top chamber experiments were conducted to study the response of chickpea crop (cv. Pusa-1105) atmospheric CO 2 enrichment at 580 ± 20 ppm, in terms radiation interception and use efficiency, biophysical parameters yield components. The ambient (control) was kept 384 ± 13 ppm. A significant increase leaf area index recorded through enrichment, while no change fractional intercepted photosynthetically active observed. This might be due reduction (18.5%) canopy extinction coefficient. 24% efficiency resulted 27.3% higher biomass. specific nitrogen content although there a area, indicating laminar thickness under enriched environment. Greater water soluble carbohydrate concentration leaves suggests greater C assimilation , with wide C:N ratio 50% flowering. There harvest index, but larger grains indicated quality grains. We conclude that productivity will occur, cost nutritional produce.