Volume 10, Issue 27 (11-2018)                   jcb 2018, 10(27): 20-30 | Back to browse issues page

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Mohamadi F, Bagheri N, Kiani G, Babaeian Jelodar N. Evaluation of Reaction of some Rice Genotypes to Salinity Stress at Germination Stage. jcb. 2018; 10 (27) :20-30
URL: http://jcb.sanru.ac.ir/article-1-717-en.html
University of Agricultural Sciences and Natural Resources, Sari, Iran
Abstract:   (578 Views)

In order to evaluate the response of rice genotypes to salinity stress at germination stage an experiment was conducted as a factorial experiment in a completely randomized design with three replications in Biotechnology La of Sari Agricultural Sciences and Natural Resources University (SANRU). Sixteen rice genotypes were evaluated at four salinity levels (0, 40, 80 and 120 mM). The results of variance analysis showed a significant effect of salinity on the traits in different rice genotypes. According to the results of the mean comparison of the studied traits, with increasing salinity from the control level to 40, 80 and 120 mM, all traits showed a significant decrease. A simple correlation coefficient between the studied traits showed that the highest positive and significant correlation was observed between germination rate with germination percentage (r = 0.89). The results of the principal component analysis based on the eight traits in the germination stage showed that the two components were able to justify 77.66% of total changes.The first component emphasized on root length, root fresh weight, root dry weight, percentage and germination rate in positive direction.The cluster analysis of rice genotypes under stress of different levels of salinity on the basis of studied traits showed that L113, L21, L59, L33 and Shasttak Mohammadi genotypes in the third group had more salt tolerance than control (NONA BOKRA). Regarding the analysis, Shultak Mohammadi and L21 genotypes in terms of tolerance to stress in different levels of salinity were superior to other genotypes in this experiment and could be used in breeding programs.

Full-Text [PDF 517 kb]   (187 Downloads)    
Type of Study: Research | Subject: Special
Received: 2017/01/24 | Revised: 2018/12/8 | Accepted: 2018/04/3 | Published: 2018/12/8

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