Induction of water deficit tolerance in wheat due to exogenous application of plant growth regulators: membrane stability, water relations and photosynthesisInstitute of Experimental Botany - Tập 56 - Trang 478-486 - 2017
S. K. Dwivedi, A. Arora, V. P. Singh, G. P. Singh
Our experiment was carried out in order to explore effects of plant growth regulators (PGR; thidiazuron, paclobutrazol, and ascorbic acid) on physiological traits of wheat genotypes under water surplus and deficit conditions. Study revealed that relative water content, membrane stability index, chlorophyll content, photosynthetic rate (PN), and maximal quantum yield of PSII improved with PGRs appl...... hiện toàn bộ
Clonal differences in the response of dark and light reactions of photosynthesis to elevated atmospheric CO2 in poplarInstitute of Experimental Botany - Tập 33 - Trang 51-61 - 1997
J. Kalina, R. Ceulemans
Two hybrid poplar (Populus) clones (i.e., fast growing clone Beauprè and slow growing clone Robusta) were grown for two years from cuttings at close spacings in open top chambers (OTCs) under ambient (AC) and elevated [EC = AC + 350 µmol(CO2) mol-1] CO2 treatments. For clone Beauprè no down-regulation of photosynthesis was observed. Two years of growing under EC resulted in an increase in quantum ...... hiện toàn bộ
Effects of salt stress on growth, photosynthesis and solute accumulation in three poplar cultivarsInstitute of Experimental Botany - Tập 47 - Trang 415-421 - 2009
W. Chen, D. Zou, W. Guo, H. Xu, D. Shi, C. Yang
This study compared the effects of salt (NaCl) stress on growth, photosynthesis and solute accumulation in seedlings of the three poplar (Populus bonatii) cultivars Populus × BaiLin-2 (BL-2), Populus × BaiLin-3 (BL-3), and Populus × Xjiajiali (XJJL). The results showed that BL-2 and BL-3 could not survive at a salinity level of 200 mM but XJJL grew well. The effect of moderate salt stress on leaf ...... hiện toàn bộ
Acclimatization of micropropagated plantlets induces an antioxidative burst: a case study with Ulmus minor Mill.Institute of Experimental Botany - Tập 49 - Trang 259-266 - 2011
M. C. Dias, G. Pinto, C. Santos
In this article, the effects of increased light intensities on antioxidant metabolism during ex vitro establishment of Ulmus minor micropropagated plants are investigated. Three month old in vitro plants were acclimatized to ex vitro conditions in a climate chamber with two different light intensities, 200 μmol m−2 s−1 (high light, HL) and 100 μmol m−2 s−1 (low light, LL) during 40 days. Immediate...... hiện toàn bộ
Elevated CO2 and temperature differentially affect photosynthesis and resource allocation in flag and penultimate leaves of wheatInstitute of Experimental Botany - Tập 45 - Trang 9-17 - 2007
P. Pérez, G. Zita, R. Morcuende, R. Martínez-Carrasco
Differences in acclimation to elevated growth CO2 (700 µmol mol−1, EC) and elevated temperature (ambient +4 °C, ET) in successive leaves of wheat were investigated in field chambers. At a common measurement CO2, EC increased photosynthesis and the quantum yield of electron transport (Φ) early on in the growth of penultimate leaves, and later decreased them. In contrast, EC did not change photosynt...... hiện toàn bộ