scholarly journals Interactive effects of elevated CO2, O3, and soil water deficit on spring wheat (Triticum aestivum L. cv. Nandu)

Agronomie ◽  
1999 ◽  
Vol 19 (8) ◽  
pp. 677-687 ◽  
Author(s):  
Colleen Hudak ◽  
Jürgen Bender ◽  
Hans-Joachim Weigel ◽  
Joseph Miller
2017 ◽  
Vol 44 (2) ◽  
pp. 267 ◽  
Author(s):  
Katrina J. Broughton ◽  
Renee A. Smith ◽  
Remko A. Duursma ◽  
Daniel K. Y. Tan ◽  
Paxton Payton ◽  
...  

Alterations in climate factors such as rising CO2 concentration ([CO2]), warming and reduced precipitation may have significant impacts on plant physiology and growth. This research investigated the interactive effects of elevated [CO2], warming and soil water deficit on biomass production, leaf-level physiological responses and whole-plant water use efficiency (WUEP) in cotton (Gossypium hirsutum L.). Cotton was grown in the glasshouse under two [CO2] treatments (CA, 400 µL L–1; CE, 640 µL L–1) and two temperature treatments (TA, 28°C : 17°C day : night; TE, 32°C : 21°C day : night). Plants were subjected to two progressive water deficit cycles, with a 5-day recovery period between the water deficit periods. CE increased vegetative biomass and photosynthetic rates, and decreased stomatal conductance in TA; however, these responses to CE were not evident under TE. CE increased whole-plant water loss under TA, but increased WUEp, whereas increased whole-plant water loss in TE decreased WUEp regardless of atmospheric [CO2]. CE may provide some positive growth and physiological benefits to cotton at TA if sufficient water is available but CE will not mitigate the negative effects of rising temperature on cotton growth and physiology in future environments.


2013 ◽  
Vol 35 (8) ◽  
pp. 2455-2465 ◽  
Author(s):  
Svetlana V. Osipova ◽  
Aleksey V. Permyakov ◽  
Marina D. Permyakova ◽  
Tatyana A. Pshenichnikova ◽  
Mikhail A. Genaev ◽  
...  

2006 ◽  
Vol 48 (4) ◽  
pp. 415-419 ◽  
Author(s):  
Jing Liu ◽  
Liang Wei ◽  
Chun-Ming Wang ◽  
Gen-Xuan Wangl ◽  
Xiao-Ping Wei

2004 ◽  
Vol 5 (2) ◽  
pp. 145-152 ◽  
Author(s):  
Justin D. Derner ◽  
Charles R. Tischler ◽  
H. Wayne Polley ◽  
Hyrum B. Johnson

2016 ◽  
Vol 50 (6) ◽  
Author(s):  
S. K. Thind ◽  
Maryada Sharma

Nine genotypes of wheat (Triticum aestivum L.) C 306 PBW 154, PBW 175, PBW 396, WH 542, PBW519, PBW520, PBW527 and PBW528 were screened at seedling stage for water stress tolerance at mild (-0.20MPa) and moderate (-0.40 MPa) water potential. Water stress induced by polyethylene glycol. Dehydrins with molecular mass of 24Kd was observed in C306, PBW 396 and PBW 528. The dehydrin bands were absent in PBW154, PBW175, WH542, PBW519 and PBW520. The selected tolerant and susceptible genotypes differing in their drought tolerance viz.C306,PBW154,PBW519,PBW527 were subjected to soil water deficit stress at two developmental stages in field conditions . The leaves of genotype C306 and PBW 527 accumulated dehydrins of Mw 24Kda and 53Kda C306, PBW527 at tillering as well as anthesis stage water deficit stress. The genotypes C306, PBW 527 have lower value of drought susceptibility index showing more tolerance to water stress as compared to PBW 154, PBW 519.


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