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Response of tomato (Lycopersicon esculentum Mill.) genotypes to elevated temperature

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Title Response of tomato (Lycopersicon esculentum Mill.) genotypes to elevated temperature
 
Creator Laxman, R.H., Srinivasa Rao, N.K., Bhatt, R.M., Sadashiva, A.T., John Sunoj, V.S., Geetha Biradar, Pavithra, C.B., Manasa, K.M. and Dhanyalakshmi, K.H.
 
Subject Climate change, elevated temperature, tomato, TGT, cholorophyll florescence
 
Description Not Available
Global warming is an important issue threatening agriculture and allied sectors with serious consequences on
food production. Tomato being sensitive to temperature would be influenced by elevated temperatures under
climate change scenarios. Physiological response of five tomato genotypes, Arka Vikas, Arka Saurabh,
Abhinava, RF4A and 2195 to mild elevated temperatures at peak flowering and peak fruiting stages was
evaluated in temperature gradient tunnel (TGT) facility. The increase in temperature above the optimal, caused
reductions in net photosynthesis rate, transpiration and stomatal conductance with differences in response
among the five genotypes. The reductions were large at peak flowering stage compared to peak fruiting stage.
The Photochemical efficiency of PSII was also reduced at both peak flowering and fruiting stages due to
increase in temperature. At peak fruiting stage, due to increase in temperature, leaf epicuticular wax content
increased across the genotypes and higher total soluble sugars, reducing sugars and proline content contributed
to increase in leaf osmotic potential. Overall, better performance of germplasm line 2195 and cv. Arka Vikas
was observed under elevated temperature.
ICAR under NICRA project
 
Date 2019-03-19T05:44:34Z
2019-03-19T05:44:34Z
2013-12-10
 
Type Article
 
Identifier Five
0972-1665
http://krishi.icar.gov.in/jspui/handle/123456789/17444
 
Language English
 
Relation Not Available;
 
Publisher Association of Meteorologists