Physiological characterization of rice under salinity stress during vegetative and reproductive stages

Aref, Farshid

doi:10.17485/ijst/2012/v5i4.11

Cited by 37 publications

(29 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The prolonging heading date might be attributed to cycling of plant recovery after salt stress. Furthermore, salinity might disturb the developing of rice growth (Aref and Rad, 2012). The high salinity level markedly reduced plant height and number of tillers hill -1 by 9.0 and 19.4%, respectively as an average of both seasons.…”

Section: Yield and Related Traitsmentioning

confidence: 99%

“…The degree of salt tolerance depends on the types and concentration of salts, water regime, growth stage of the plant, duration of exposure to salt and rice genotypes. Genotypes rice is differentially influenced by salinity at various growth stages which the response to salinity certainly varies from growth stage to another (Sankar et al, 2011 andAref andRad, 2012). Growth and yield components of rice genotypes were severely affected by salinity as mentioned by Zayed et al (2005 and, Mohammadi et al (2010) and Mansuri et al (2012).…”

Section: Introductionmentioning

confidence: 98%

“…In the absence of particular-ion effects, crop growth reduction due to salinity is mostly related to the osmotic potential of the rootzone soil solution. Salts stress is affect on different physiological and biochemical traits which forestall or defer germination and consequently lead to abnormal growth and reduction in crop productivity (Mohammadi et al, 2010 andAref andRad, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Physiological and Genetic Performance of Some Rice Genotypes Grown in Medium and High Salinity Soils

Zayed

Ali

Hammoud

2016

Menoufia Journal of Plant Production

View full text Add to dashboard Cite

Salinity is a common abiotic stress that seriously negatively affects rice production in the world. The investigation was carried out at the Experimental Farm of El-Sirw Agricultural Research Station, Damietta governorate, Egypt to investigate the effect of soil salinity levels (6 and 11 dS m -1) on the morphological, leaf chemical constituents and yield traits and phenotypic and genotypic parameters of twelve rice genotypes (

show abstract

Section: Yield and Related Traitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Physiological and Genetic Performance of Some Rice Genotypes Grown in Medium and High Salinity Soils

Zayed

Ali

Hammoud

2016

Menoufia Journal of Plant Production

View full text Add to dashboard Cite

show abstract

“…Therefore, increased salinity resulted in increased total number of empty grains per panicles and finally it decreases yield. Increased number of empty grains might be a result of assimilate shortage during grain filling, brought about by early leaf senescence caused in this case by salinity (Aref and Rad, 2012). Sterility and reduction in seed set were primarily due to reduced translocation of soluble carbohydrates to primary and secondary spikelets, accumulation of more sodium and less potassium in all floral parts and inhibition of the specific activity of starch synthetase in developing rice grains, thus reducing seed set (Aref and Rad, 2012).…”

Section: Number Of Filled Grain Per Panicle and Filled Grain Reductionmentioning

confidence: 98%

“…Increased number of empty grains might be a result of assimilate shortage during grain filling, brought about by early leaf senescence caused in this case by salinity (Aref and Rad, 2012). Sterility and reduction in seed set were primarily due to reduced translocation of soluble carbohydrates to primary and secondary spikelets, accumulation of more sodium and less potassium in all floral parts and inhibition of the specific activity of starch synthetase in developing rice grains, thus reducing seed set (Aref and Rad, 2012). It was also reported that reducing seed set in the panicle, possibly as a consequence of decreased pollen viability which is greatly influenced by the ionic toxicity under salinity (Mohammadi Nejada et al, 2010).…”

Section: Number Of Filled Grain Per Panicle and Filled Grain Reductionmentioning

confidence: 99%

Screening of Rice (<i>Oryza sativa</i> L.) Genotypes at Reproductive Stage for their Tolerance to Salinity

et al. 2018

View full text Add to dashboard Cite

Soil salinity is one of the most devastating environmental stresses for rice production in the coastal areas of Bangladesh. Improvement in salt tolerance of rice is an important way for the economic utilization of coastal zones. An experiment was conducted at the vinyl house of the Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Bangladesh during December 2016 to April 2017 to determine the effects of different salinity levels on the yield and yield components of some rice (Oryza sativa L.) genotype sand finally, screening of rice genotypes for salt tolerance. The experiment containing four treatments was laid out in a complete randomized design with five replications. The treatments were four levels of saline water with electrical conductivities at control (0.3 dSm-1), 5, 10 and 15dSm-1. Based on screening at germination stage, relatively salt-tolerant eleven genotypes with two check varieties were used in this experiment. The study showed that increase in salinity level significantly decreased yield and yield contributing characters of rice. However, among the eleven, three genotypes (Chapali, Patnai 23 and Soloi) were considered as moderately salt tolerant at 15 dSm-1 on the basis of their yields and yield contributing characteristics such as plant height reduction, total tiller reduction, effective tiller reduction, reduction of fertile grains per panicle, grain yield and relative grain yield. Therefore, Chapali, Patnai 23 and Soloi might be recommended as moderately salt tolerant rice genotypes. The Agriculturists 2018; 16(1) 65-77

show abstract

Salt tolerance at vegetative stage is partially associated with changes in grain quality and starch physicochemical properties of rice exposed to salinity stress at reproductive stage

2021

View full text Add to dashboard Cite

BACKGROUND: Rice yield and grain quality are highly sensitive to soil salinity. Distinct rice genotypes respond to salinity stress differently. To explore the variation in grain yield and grain trait adaptation to moderate, reproductive-stage salinity stress (4 dS/m electrical conductivity), four rice cultivars differing in degrees of vegetative salt tolerance, including Pokkali (salt-tolerant), RD15 (moderately salt-tolerant), KDML105 (moderately salt-susceptible) and IR29 (salt-susceptible), were examined. RESULTS: Grain fertility and 100-grain weight of RD15, KDML105 and IR29, as well as grain morphology of KDML105 and IR29, were significantly disturbed. Interestingly, grain starch accumulation in RD15 and KDML105 was enhanced under stress. However, only RD15 showed changes in starch physicochemical properties, including increased granule diameter, decreased gelatinization peak temperature (T p ) and decreased retrogradation onset temperature (T o ). Notably, Pokkali maintained productivity, grain quality, and starch properties, while the grain quality of IR29 remained unchanged under salinity stress. Multivariate analysis displayed clear separation of productivity, grain morphology, and starch variables of RD15 in the salttreated group relative to the control group, suggesting that it was the cultivar most impacted by salt stress despite its moderate salt-tolerance at vegetative stage. CONCLUSION: Our results demonstrate specific salinity responses among the rice genotypes, and suggest discrepancies between degrees of salt tolerance at vegetative stage versus the ability to maintain both grain quality and starch properties in response to salinity stress imposed at reproductive stage.

show abstract

Physiological characterization of rice under salinity stress during vegetative and reproductive stages

Cited by 37 publications

References 0 publications

Physiological and Genetic Performance of Some Rice Genotypes Grown in Medium and High Salinity Soils

Physiological and Genetic Performance of Some Rice Genotypes Grown in Medium and High Salinity Soils

Screening of Rice (<i>Oryza sativa</i> L.) Genotypes at Reproductive Stage for their Tolerance to Salinity

Salt tolerance at vegetative stage is partially associated with changes in grain quality and starch physicochemical properties of rice exposed to salinity stress at reproductive stage

Contact Info

Product

Resources

About