Gas Exchange Characteristics in Selected Accessions of <i>Dendrocalamus strictus</i> Roxb. (Male Bamboo)

Ram Gopal; Meena Bakshi

doi:10.36808/if/2021/v147i5/154576

Gas Exchange Characteristics in Selected Accessions of Dendrocalamus strictus Roxb. (Male Bamboo)

Authors

Ram Gopal Plant Physiology Discipline (Genetics and Tree Improvement Division), Forest Research Institute, Dehradun, Uttrakhand
Meena Bakshi Plant Physiology Discipline (Genetics and Tree Improvement Division), Forest Research Institute, Dehradun, Uttrakhand

DOI:

https://doi.org/10.36808/if/2021/v147i5/154576

Keywords:

Dendrocalamus strictus, Gas Exchange Characteristics and Physiological Attributes.

Abstract

Five selected accessions of Dendrocalamus strictus Roxb. were evaluated for gas exchange characteristics at Forest Research Institute Campus, Dehradun, Uttarakhand. Physiological attributes were monitored using LICOR 6400 Portable Photosynthetic system. Variations in Photosynthetic rate (A) which was maximum (11.54 Î¼mol CO m^-2s^-1) in accession of Uttarakhand while minimum in accession of Gujarat whereas transpiration rate (E) was maximum (5.88 m mol H_2O m^-2s^-1) in accession of Uttar Pradesh and minimum in accession of Himachal Pradesh followed by Uttarakhand. The stomatal conductance to H₂O (G_s) was maximum (0.18) in accession of Uttar Pradesh in consonance with maximum (294.05 Î¼mol CO₂mol^-1) intercellular CO₂ (Ci) where transpiration (E) and vapour pressure deficit (VPD) were minimum in Uttarakhand accession. Instaneous water used efficiency (WUE_ins) was also maximum in accession of Uttarakhand coupled ins with maximum A and lower E. Among the various accessions, Uttarakhand depicted highest A coupled with high instaneous water use efficiency (WUE_ins), thus could be exploited for large scale planting with higher ins productivity.

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