PJB-2022-333
Characterization of tomato germplasm for salinity tolerance at seedling stage based on morphological traits and inorganic osmolytes
Noreen Fatima
Abstract
Salinity is one of the important abiotic stress which adversely affect tomato growth and development. This study focus on the identification of salt-tolerant and salt-sensitive genotypes using Principal Component Analysis. Present study was conducted using two factor factorial under CRD with 3 replications and 3 levels (T0 = control, T1 = 6 dS/m, T2 = 12 dS/m) of salt (NaCl) treatment was applied. Data for various morphological and biochemical attributes were recorded and subjected to Analysis of variance and Principal Component Analysis to check the variation in germplasm. ANOVA showed significant results for all attributes indicating the presence of variability in germplasm. Based on results obtained from PCA analysis, the genotypes AUT-318, CLN-2498-A, 17884, Picendanto, 17260, 17256, 17263 and 17266 are considered salt tolerant genotypes while the 19903, 19908, Target-66, H-24, 17255, Nadir and Peelo considered as salt-sensitive genotypes. These genotypes can be further used in tomato breeding programs
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