Abstract
Diurnal patterns of leaf water potential (ΨW), canopy net photosynthetic rate (P N), evapotranspiration rate (E), canopy temperature (Tc), 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 (Ta) 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.
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Kumar, A., Turner, N., Singh, D. et al. Diurnal and Seasonal Patterns of Water Potential, Photosynthesis, Evapotranspiration and Water Use Efficiency of Clusterbean. Photosynthetica 37, 601–607 (2000). https://doi.org/10.1023/A:1007127726207
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DOI: https://doi.org/10.1023/A:1007127726207