Journal ArticleDOI
Evaluation of four medicinal herb species under conditions of water-deficit stress
Anju Thakur,Chandu Lal Thakur +1 more
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TLDR
In this study, C. borivilianum and W. somnifera have exhibited greater relative drought tolerance as compared to A. paniculata and S. rebaudiana, revealing differential relative potential to sustain performance and cope with the conditions of water stress.Abstract:
Abilities of four commercial herb species namely, Chlorophytum borivilianum, Stevia rebaudiana, Withania somnifera, and Andrographis paniculata were tested for relative drought tolerance under poly house conditions. The findings based on the quantum of data collected for growth, yield of economic parts and physiological traits reveal differential relative potential to sustain performance and cope with the conditions of water stress. Comparative performance of four herb species under stress (50% water deficit) for stress duration of 10, 20 and 30 days revealed significant adverse effects of water-deficit stress as well as stress durations. Out of the four herb species studied, adverse impact of 50% water deficit up to 30 days of stress on growth, yield, rate of photosynthesis, canopy temperature depression and chlorophyll fluorescence (Fv/Fm) ratio was significantly higher in S. rebaudiana and A. paniculata in comparison to C. borivilianum and W. somnifera. In this study, C. borivilianum and W. somnifera have exhibited greater relative drought tolerance as compared to A. paniculata and S. rebaudiana.read more
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Mitigation of Water-Deficit Stress, Physio-morphological Adaptation, and Elevation of Andrographolide in Andrographis paniculata using Foliar Glycine Betaine
Daonapa Chungloo,Rujira Tisarum,Thapanee Samphumphuang,Thanyaporn Sotesaritkul,Harminder Pal Singh,Teruhiro Takabe,Suriyan Cha-um +6 more
References
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Journal ArticleDOI
Chlorophyll fluorescence—a practical guide
Kate Maxwell,Giles N. Johnson +1 more
TL;DR: An introduction for the novice into the methodology and applications of chlorophyll fluorescence is provided and a selection of examples are used to illustrate the types of information that fluorescence can provide.
Journal ArticleDOI
Influence of soil water supply on the plant water balance of four tropical grain legumes
T.R. Sinclair,M.M. Ludlow +1 more
TL;DR: Differences among the four grain legume species in the duration of stage III which finished when plants died, were consistent with differences in epidermal conductance and in dehydration tolerance of leaves.
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Growth and physiological responses of isohydric and anisohydric poplars to drought
TL;DR: Isohydric poplars have high water-use efficiency, while anisohydricpoplars show faster growth under a variable water supply, with implications for performance of the different genotypes for woody biomass production.
Journal ArticleDOI
Ecophysiological significance of chlorophyll loss and reduced photochemical efficiency under extreme aridity in Stipa tenacissima L.
Luis Balaguer,Francisco I. Pugnaire,Elsa Martínez-Ferri,Cristina Armas,Fernando Valladares,Esteban Manrique +5 more
TL;DR: In this article, the photoprotective mechanisms of S. tenacissima during the transition from spring to summer and autumn were investigated and shown to be associated with a low capacity of dissipation of the excitation energy non-radiatively (measured as NPQ).
Journal ArticleDOI
Effects of water deficit on the dynamics of flowering and fruit production in Capsicum chinense Jacq in a tropical semiarid region of Venezuela.
TL;DR: The results show that low water availability, prior to flowering, reduces the number of flowers produced and retards the occurrence of maximum flowering, and a water deficit during the period between flowering and fruit development reduces final fruit production.