TY - JOUR
T1 - Diurnal and seasonal patterns of water potential, photosynthesis, evapotranspiration and water use efficiency of clusterbean
AU - Kumar, A.
AU - Turner, N. C.
AU - Singh, D. P.
AU - Singh, P.
AU - Barr, M.
PY - 1999
Y1 - 1999
N2 - Diurnal patterns of leaf water potential (ΨW), canopy net photosynthetic rate (P(N)), evapotranspiration rate (E), canopy temperature (T(c)), and water use efficiency (WUE) of clusterbean [Cyamopsis tetragonoloba (L.) Taub., cv. Desi] were studied at six phenological stages of plant development under field conditions at CCS Haryana Agricultural University, Hisar. The highest P(N), E, and WUE were observed at pod initiation stage (61 DAS). Daily maxima of P(N) were usually between 11:00 to 14:00 h while those of E and WUE between 12:30 and 16:00 h. P(N) was mainly dependent on photosynthetically active radiation and E on air temperature (T(a)) but the relationships varied at different growth stages. WUE declined with the increase in T(a). At mid-day, ΨW was highest during pod initiation.
AB - Diurnal patterns of leaf water potential (ΨW), canopy net photosynthetic rate (P(N)), evapotranspiration rate (E), canopy temperature (T(c)), and water use efficiency (WUE) of clusterbean [Cyamopsis tetragonoloba (L.) Taub., cv. Desi] were studied at six phenological stages of plant development under field conditions at CCS Haryana Agricultural University, Hisar. The highest P(N), E, and WUE were observed at pod initiation stage (61 DAS). Daily maxima of P(N) were usually between 11:00 to 14:00 h while those of E and WUE between 12:30 and 16:00 h. P(N) was mainly dependent on photosynthetically active radiation and E on air temperature (T(a)) but the relationships varied at different growth stages. WUE declined with the increase in T(a). At mid-day, ΨW was highest during pod initiation.
KW - Air and leaf temperature
KW - Cyamopsis tetragonoloba
KW - Photosynthetically active radiation
KW - Water relations
UR - http://www.scopus.com/inward/record.url?scp=0033366762&partnerID=8YFLogxK
U2 - 10.1023/A:1007127726207
DO - 10.1023/A:1007127726207
M3 - Article
AN - SCOPUS:0033366762
SN - 0300-3604
VL - 37
SP - 601
EP - 607
JO - Photosynthetica
JF - Photosynthetica
IS - 4
ER -