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Salinity and drought induced changes in gas exchange attributes and chlorophyll fluorescence characteristics of rice (Oryza sativa) varieties

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Title Salinity and drought induced changes in gas exchange attributes and chlorophyll fluorescence characteristics of rice (Oryza sativa) varieties
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Creator ASHWANI KUMAR, CHARU LATA, PARVEEN KUMAR, RITU DEVI, KAILASH SINGH, S L KRISHNAMURTHY, NEERAJ KULSHRESHTHA, RK YADAV and SK SHARMA
 
Subject Chlorophyll fluorescence, Gas exchange attributes, Rice varieties, Water deficit
 
Description The present study was conducted to assess the effect of water deficit coupled with salt stress on physiological traits
and stress tolerance mechanisms of rice (Oryza sativa L.) varieties differing in salt tolerance. Two salt tolerant (CSR
10 and CSR 36) and two salt sensitive (IR 29 and Pusa 44) rice varieties were evaluated in different combinations of
controlled water deficit coupled with salt stress conditions. The salt tolerant variety CSR 10 has shown the best
morphological or phenological growth performance; while IR 29 performed the worst in terms of reduction in growth
at 25 and 50% water deficit. At 50 and 100 mM NaCl along with 50% water deficit, 80% plants of IR 29 could not
survive. Variety CSR 10 exhibited maintenance of higher total chlorophyll concentration (ChlT), relative water content
(RWC), gas exchange characteristics and chlorophyll fluorescence attributes with lower membrane injury (MI) and
thus ultimately showed better stress tolerance than other varieties.
 
Date 2017-06-08T08:43:00Z
2017-06-08T08:43:00Z
2016-06
 
Type Research Paper
 
Identifier Kumar, A., Lata, C., Kumar, P., Devi, R., Singh, K., Krishnamurthy, S. L., Kulshreshtha, N., Yadav, R. K. & Sharma, S. K. (2016). Salinity and drought induced changes in gas exchange attributes and chlorophyll fluorescence characteristics of rice (Oryza sativa) varieties. The Indian Journal of Agricultural Sciences, 86(6): 718-726.
http://krishi.icar.gov.in/jspui/handle/123456789/4294
 
Language English
 
Publisher ICAR