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Interactive Effects of Elevated CO2 and Moisture Stress on the Photosynthesis, Water Relation and Growth of Brassica Species
Author(s) -
Mishra R. S.,
Abdin M. Z.,
Uprety D. C.
Publication year - 1999
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1046/j.1439-037x.1999.00294.x
Subject(s) - brassica , photosynthesis , moisture stress , moisture , water content , brassica carinata , biology , water stress , agronomy , drought stress , botany , chemistry , horticulture , geotechnical engineering , organic chemistry , engineering
Interactive effects of elevated CO2 and moisture stress on photosynthesis, growth and water relation of Brassica species were studied using open top chamber technology. Brassica species responded to the elevated CO2 significantly under moisture stress condition. The adverse effect of moisture stress on the photosynthesis and plant water components were minimized by elevated levels of CO2. Drought susceptible species of B. campestris and B. nigra responded better to elevated CO2 compared to drought tolerant Brassica species such as B. carinata and B. juncea. The plant water potential significantly improved by elevated CO2 coupled with higher stomatal resistance and root growth.