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Abstract The present study aimed to investigate the relationship between developmental performance appraisal and Job performance mediated by organizational commitment and organizational support in the employees. This study performed in the Gas Company of Guilan Province in 2013. A number of 217 employees were selected as the participants using classified random sampling consistent with the sample size. Participants in this research complemented following Questionnaires: developmental performance appraisal, Organizational Commitment, Organizational support, Task Performance and Organizational Citizenship Behavior. To confirm the scale factor structure and to evaluate the suggested model, confirmative factor analysis and structural equation modeling were conducted. Moreover, Bootstrap Test was adopted to examine its mediation and meaningfulness effects. The results revealed that the suggested model satisfies a good fitting regarding provided data. The research findings showed that only the indirect path of developmental performance appraisal, organizational commitment and organizational citizenship behavior was meaningful, while the other three indirect paths (developmental performance appraisal, organizational support and commitment on task performance and developmental performance appraisal, organizational support and organizational citizenship

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Rye is one of Iran's most important crops, known as Secale, belonging to the Poaceae. In this research, genetic diversity of 39 families of rye populations from different regions of Iran, the USA, and the Soviet :union: was evaluated with the ISSR marker. The results showed that 8 ISSR initiators produced 48 bands which included 18 polymorphic bands (37.5% polymorphism). The mean of polymorphic information content (PIC) and marker index value (MI) for ISSR primers was 0.15 and 7.2 respectively. The highest PIC (3.0) was related to primer 5+6 and the highest MI (0.96) reached for primer 1+6. After observing polymerase chain reaction products on an agarose gel and scoring DNA bands, the analysis was performed with NTSYS software. The cluster analysis dendrogram of UPGMA and Jaccard's similarity coefficient divided the rye populations into 9 groups, the results were compiled with grouping by principal component analysis. The results of analysis of Molecular Variance indicated an in-species variation more than inter-species variation. The mean Nei genetic variation (h) was 350 and the mean of Shannon index (I) in rye species was 523, which indicates a relatively good variety within species. The results showed that the ISSR marker was a useful tool in determining genetic variation of inter and intra specific of rye.