TY - JOUR
T1 - Differential responses in water use efficiency in two varieties of Catharanthus roseus under drought stress
AU - Jaleel, Cheruth Abdul
AU - Gopi, Ragupathi
AU - Sankar, Beemarao
AU - Gomathinayagam, Muthiah
AU - Panneerselvam, Rajaram
PY - 2008/1
Y1 - 2008/1
N2 - Two varieties, rosea and alba, of Catharanthus roseus (L.) G. Don. were screened for their water use efficiency under two watering regimes, viz. 60 and 100% filed capacity in the present study. Drought stress was imposed at 60% filed capacity from 30 to 70 days after sowing, while the control pots were maintained at 100% filed capacity throughout the entire growth period. Leaf area duration, cumulative water transpired, water use efficiency, net assimilation rate, mean transpiration rate, harvest index, biomass and yield under the water deficit level were measured from both stressed and well-watered control plants. Water use efficiency significantly increased in both varieties under water stress. Drought stress decreased leaf area duration, cumulative water transpired, net assimilation rate, mean transpiration rate, harvest index, and biomass yield in both varieties studied. Among the varieties, rosea variety showed the best results. To cite this article: C.A. Jaleel et al., C. R. Biologies 331 (2008).
AB - Two varieties, rosea and alba, of Catharanthus roseus (L.) G. Don. were screened for their water use efficiency under two watering regimes, viz. 60 and 100% filed capacity in the present study. Drought stress was imposed at 60% filed capacity from 30 to 70 days after sowing, while the control pots were maintained at 100% filed capacity throughout the entire growth period. Leaf area duration, cumulative water transpired, water use efficiency, net assimilation rate, mean transpiration rate, harvest index, biomass and yield under the water deficit level were measured from both stressed and well-watered control plants. Water use efficiency significantly increased in both varieties under water stress. Drought stress decreased leaf area duration, cumulative water transpired, net assimilation rate, mean transpiration rate, harvest index, and biomass yield in both varieties studied. Among the varieties, rosea variety showed the best results. To cite this article: C.A. Jaleel et al., C. R. Biologies 331 (2008).
KW - Biomass yield
KW - Catharanthus roseus
KW - Drought
KW - Gravimetric method
KW - Leaf area duration
KW - Net assimilation rate
KW - Water use efficiency
UR - http://www.scopus.com/inward/record.url?scp=37549016416&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=37549016416&partnerID=8YFLogxK
U2 - 10.1016/j.crvi.2007.11.003
DO - 10.1016/j.crvi.2007.11.003
M3 - Article
C2 - 18187121
AN - SCOPUS:37549016416
SN - 1631-0691
VL - 331
SP - 42
EP - 47
JO - Comptes Rendus - Biologies
JF - Comptes Rendus - Biologies
IS - 1
ER -