Effect of Salt Stress in the Selection of Salt Tolerant Hybrids in Rice (Oryza sativa L.) Under in vitro and in vivo Condition

2006 ◽  
Vol 6 (1) ◽  
pp. 137-142 ◽  
Author(s):  
S. Babu ◽  
A. Sheeba ◽  
P. Yogameenak ◽  
J. Anbumalarm ◽  
P. Rangasamy
Keyword(s):  
Oryza Sativa ◽  
Salt Stress ◽  
Oryza Sativa L ◽  
Salt Tolerant ◽  
Selection Of

scholarly journals In vitro Selection of Drought Stress Tolerance in Rice (Oryza sativa L.) var. Jarava

2019 ◽  
Vol 29 (1) ◽  
pp. 127-131 ◽  
Author(s):  
Omar H Obaid ◽  
SK Reddy
Keyword(s):  
Oryza Sativa ◽  
Drought Stress ◽  
Stress Tolerance ◽  
Plant Tissue ◽  
In Vitro Selection ◽  
Oryza Sativa L ◽  
Drought Stress Tolerance ◽  
Selection Of

Abstract not available Plant Tissue Cult. & Biotech. 29(1): 127-131, 2019 (June)

Physiological characterisation and fine mapping of a salt-tolerant mutant in rice (Oryza sativa)

2015 ◽  
Vol 42 (11) ◽  
pp. 1026 ◽  
Author(s):  
Ping Deng ◽  
Dan Jiang ◽  
Yanmin Dong ◽  
Xingyu Shi ◽  
Wen Jing ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Salt Stress ◽  
Salt Tolerance ◽  
Oryza Sativa L ◽  
Recessive Gene ◽  
Nacl Stress ◽  
Shoot Biomass ◽  
Salt Tolerant ◽  
Candidate Locus ◽  
F2 Population

Salt-tolerant mutants are valuable resources for basic and applied research on plant salt tolerance. Here, we report the isolation and characterisation of a salt-tolerant rice (Oryza sativa L.) mutant. This mutant was identified from an ethyl methanesulfonate-induced Nipponbare mutant library, designated as rice salt tolerant 1 (rst1). The rst1 mutant was tolerant to salt stress and showed significantly higher shoot biomass and chlorophyll content, but lower lipid peroxidation and electrolyte leakage under NaCl stress. The improved salt tolerance of this mutant may be due mainly to its enhanced ability to restrict Na+ accumulation in shoots under salt stress conditions. Genetic analysis indicated that the salt tolerance of the rst1 mutant was controlled by a single recessive gene. Quantitative trait locus (QTL) mapping for salt tolerance was performed using an F2 population of rst1 × Peiai 64. Two QTLs were detected, in which the locus on chromosome 6 was determined to be the candidate locus of the rst1 gene. The rst1 locus was subsequently shown to reside within a 270.4-kb region defined by the markers IM29432 and IM29702. This result will be useful for map-based cloning of the rst1 gene and for marker-assisted breeding for salt tolerance in rice.

scholarly journals In vitro selection of winter triticale for salt resistance

1970 ◽  
pp. 247-251
Author(s):  
S. V. Pykalo ◽  
O. V. Dubrovna ◽  
O. A. Demydov
Keyword(s):  
Salt Stress ◽  
Cell Lines ◽  
In Vitro Selection ◽  
High Survival ◽  
Winter Triticale ◽  
Step Type ◽  
Callus Lines ◽  
Selection Of

Aim. To obtain of cell lines and plant-regenerants of winter triticale resistant for salt stress the in vitro selection was carried out. Methods. In order to select resistant to salt stress forms of triticale the efficiency of using direct and step-type in vitro selection with application of selective system based on sodium chloride has been investigated. Results. The direct and step-type in vitro selection was conducted and the selection of callus lines of triticale being resistant to simu-lated salinity was carried out. As a result, from line 38/1296 and variety Obriy respectively, 5 and 4 resistant callus lines were identified that had a high survival rate on the selective medium with 1.2 % NaCl and maintained morphogenetic potential. From the resistant lines plant regenerants were induced and their rearing, rooting and transfer to in vivo condi-tions were optimized. Conclusions. A step-type in vitro selection was more effective, because resulted from the selec-tion more resistant callus forms were identified. First cell lines of winter triticale with resistance to salt stress were de-rived.Keywords: Triticale, in vitro selection, callus, salt stress, resistance.

Development of Highly in vitro Callogenesis and Regeneration System for Some Salt Tolerant Rice (Oryza sativa L.) Cultivars of Bangladesh

2005 ◽  
Vol 4 (3) ◽  
pp. 230-234 ◽  
Author(s):  
M. Al-Forkan . ◽  
M.A. Rahim . ◽  
T. Chowdhury . ◽  
P. Akter . ◽  
L. Khaleda .
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Salt Tolerant ◽  
Regeneration System

Combination of traits at two developmental stages under salt stress as a measure of tolerance in a reciprocally crossed rice (Oryza sativa) population

2020 ◽  
Vol 71 (4) ◽  
pp. 334 ◽  
Author(s):  
Sabrina M. Elias ◽  
M. Sazzadur Rahman ◽  
Sumaiya F. Khan ◽  
Sudip Biswas ◽  
Taslima Haque ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Salt Stress ◽  
Reciprocal Cross ◽  
Developmental Stages ◽  
Oryza Sativa L ◽  
Principal Component ◽  
Maturity Stage ◽  
Salt Tolerant ◽  
Rice Varieties ◽  
Breeding Lines

The rice (Oryza sativa L.) landrace Horkuch from Bangladesh maintains efficient photosynthesis and detoxification under salt stress and was therefore considered to be a useful donor for tolerance traits. Reciprocally crossed bi-parental mapping populations were generated from salt-tolerant Horkuch and high-yielding salt-sensitive variety IR29, in order to identify superior salt-tolerant high-yielding lines as donors. The present study reports on the phenotypic screening data of ~300 F3 segregating populations from the reciprocal cross and their parental lines in seedlings and screening of a subset at maturity stage under gradual salt stress of 12 dS m–1 for seedlings and 8 dS m–1 for mature plants. Correlation, broad-sense heritability and principal component analyses for salt tolerance as well as yield-related traits were conducted in the populations at the two developmental stages. Level of salt injury was found to be correlated with traits such as filled grain weight at maturity stage and biomass-related traits at the seedling stage. This association between yield-related and survival traits helped to identify tolerant and sensitive plants, which were predicative of agronomic performance under salt stress. Moreover, use of the reciprocal-cross population showed how cytoplasmic inheritance of specific traits such as K+ concentrations can affect characteristics of donor plants. Measurement of a large number of traits and analysis of their co-inherited interrelation can therefore help identify the best performing plants under salt stress for effective breeding strategies. The data are being utilised in mapping of quantitative trait loci, and selected progenies are being used as breeding lines for producing durable salt-tolerant, high-yielding rice varieties.

scholarly journals Morphophysiological analysis and expression of proline genes in rice (Oryza sativa L. cv. BRS AG) subjected to in vitro salt stress

2018 ◽  
Vol 12 (02) ◽  
pp. 243-253 ◽  
Author(s):  
Tatiana Rossatto ◽  
◽  
Mara Andrade C. Maia ◽  
Marcelo N. Amaral ◽  
Priscila A. Auler ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Salt Stress ◽  
Oryza Sativa L
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