Characterization of salinity tolerance in rice ( Oryza sativa L.) genotypes at the germination and seedling stages

Maiti, Ratikanta; Vidyasagar, P.; Banerjee, P. P.

doi:10.1556/aagr.56.2008.2.3

Cited by 6 publications

(8 citation statements)

References 16 publications

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“…The result showed that root length decreased under salinity stress. Maiti et al (2006) found a considerable amount of genetic variation under saline condition at the seedling stage with reference to the variables such as root length, shoot and root dry weight. Roy et al (2002) reported that number of roots plant -1 decreased with the increasing levels of salinity.…”

Section: Resultsmentioning

confidence: 98%

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Evaluation of Rice Germplasm under Salt Stress at the Seedling Stage through SSR Markers

Al-Amin

Islam

Begum

et al. 2013

Int. J. Agril. Res. Innov. & Tech.

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Twenty eight rice germplasms were used for identification of salt tolerant rice genotypes at the seedling stage at the experimental farm and Biotechnology laboratory of the Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh during February 2009 to October 2009. Phenotyping for salinity screening of the rice genotypes was done using salinized (EC level 12 dS m -1 ) nutrient solution in hydroponic system. Genotypes were evaluated for salinity tolerance on 1-9 scale based on seedling growth parameters following modified Standard Evaluation Scoring (SES) of IRRI. Phenotypically, on the basis of SES and % total dry matter (TDM) reduction of the genotypes viz. PBSAL-614, PBSAL-613, PBSAL-730, Horkuch, S-478/3 Pokkali and PBSAL (STL)-15 were found to be salt tolerant; on the other hand Iratom-24, S-653/32, S-612/32, S-604/32, S-633/32, Charnock (DA6), BINA Dhan-6 and S-608/32 were identified as salt susceptible. For genotyping, ten SSR markers were used for polymorphism, where 3 primers (RM127, RM443 and RM140) were selected for evaluation of salt tolerance. In respect of Primer RM127, 7 lines were found salt tolerant and 11 lines were moderately tolerant and 10 lines were susceptible. Nine tolerant, 9 moderately tolerant and 10 susceptible lines were found when the primer RM140 was used and primer RM443 identified 8 lines as tolerant, 9 lines as moderately tolerant and 11 lines as susceptible. Thus, the salt tolerant lines can be used in further evaluation for salinity tolerance and the SSR markers used in this study are proving valuable for identifying salt tolerant genes in marker assisted breeding.

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Section: Resultsmentioning

confidence: 98%

“…Islam et al (2007) also observed wide variation in phenotypes from tolerant (score 3) to highly susceptible (score 9) using modified SES of IRRI standard protocol. (Javed et al, 2006;Maiti et al, 2006). They showed that the increase in salinity level reduced the seedling height.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Rice Germplasm under Salt Stress at the Seedling Stage through SSR Markers

Al-Amin

Islam

Begum

et al. 2013

Int. J. Agril. Res. Innov. & Tech.

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“…These five genotypes were consistently good and showed very little reduction in the traits measured under salt stress when compared to the control treatment. According to Cramer and Nowak (1992), Perez-Alfocea et al (1996), Purnendu et al (2004), Maiti et al (2006) and Janmohammadi et al (2008), salinity stress affect the roots of some genotypes more than the shoot, due to varietal differences in root capacity to exclude Na + and Cl − negative ions. At the highest salinity level (12 dS/m) there were only two mortalities (OG0315 and IR29), these genotypes were among the most affected by high concentration of salt stress.…”

Section: Discussionmentioning

confidence: 99%

Response of rice genotypes to salinity under hydroponic conditions

Kargbo¹,

.²,

Porbeni³

et al. 2019

Agro-Sci.

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The experiment was aimed at assessing the response of 30 rice genotypes to different levels of salinity using NaCl concentration as salt stress at early seedling stage under hydroponic conditions. The experiment was replicated three times in a Completely Randomized Design for two years. The 30 rice genotypes evaluated for root length, fresh root weight, dry root weight, shoot length, fresh shoot weight, dry shoot weight, seedling biomass and shoot/root length ratio. The four salinity treatments/levels (0, 4, 6 and 12 dS/m) significantly affected the response of the 30 rice genotypes for all the traits evaluated. The interaction between salinity treatments and the genotypes was significant for all traits except fresh root weight, shoot length and dry shoot weight. The genotypic response revealed reduction in performance as the salinity level increases for all the traits, 10 genotypes were tolerant at all salinity levels. The most affected seedling trait due to salinity stress was seedling biomass at 6 dS/m (54.84%) and was expressed by genotype IR29 (susceptible check), followed by ROK 24 at 12 dS/m (54.43%). Eight rice genotypes; CK73, ITA212 (FARO 35), ITA222 (FARO 36), OG0315, OG250315, OW0315, TOG 5681 and Pokkali (Tolerant Check) were classified highly tolerant by both Stress Tolerance Index (SST) and Stress Susceptible Index (SSI), while FARO 61 (NERICA L -34) and IR72 were moderately tolerant. These rice genotypes have good potentials for further salt tolerance breeding.

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“…However, rice exhibits considerable intra-specific variability in resistance to salinity (Flowers and Yeo, 1981;Maiti et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Application of Ash for Amelioration of Salinity Effect in Rice

Fahim¹,

Kader

Nahar³

et al. 2017

Bangladesh Agron. J.

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Agricultural land use in coastal area covers 53% and the lands are mostly affected by salinity. Besides, the average yield of rice in these areas is very low due to salinity. Although, BRRI has developed salt registrant rice varieties, the average production can be improved through soil management. Thus, a pot experiment was conducted in the net house of Department of Agronomy, Bangladesh Agricultural University, Mymensingh, during March to August 2010 to investigate the ameliorative effect of ash application on yield and yield attributes of rice under various salinity levels. Rice var. BRRI dhan47 (a salt tolerant variety) was used in the experiment. The sodium chloride induced salinity levels were 20, 40, 60, 80 and 100 mM NaCl and the levels of ash applied were 1.5, 3, 4.5 and 6 t ha -1 . Results revealed that the different levels of salinity had significant adverse effect on plant height, tillers hill -1 , panicle hill -1 , grains panicle -1 , 1000-grain weight, grain yield, biological yield and harvest index. All the plants eventually died when they were exposed to salinity level of 40 mM NaCl or more and could not survive up to maturity. Application of ash enhanced the yield attributes and yield of rice under different salinity levels compared to those without ash. It was concluded that application of ash at the rate of 6 t ha -1 ameliorated the salinity stress effect on rice yield of BRRI dhan47.

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Characterization of salinity tolerance in rice ( Oryza sativa L.) genotypes at the germination and seedling stages

Cited by 6 publications

References 16 publications

Evaluation of Rice Germplasm under Salt Stress at the Seedling Stage through SSR Markers

Evaluation of Rice Germplasm under Salt Stress at the Seedling Stage through SSR Markers

Response of rice genotypes to salinity under hydroponic conditions

Application of Ash for Amelioration of Salinity Effect in Rice

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