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Articles by S. Gharahveysi
Total Records ( 4 ) for S. Gharahveysi
  M. Salehi Nezhad , S.Z. Mirhosseini , S. Gharahveysi , M. Mavvajpour and A.R. Seidavi
  The present study aims at shedding more light to larval duration and development of silkworm lines from Iranian silkworm gene bank and comparison of the results using statistical models for selection of the superior strains. Feeding and other conditions of larval rearing were conducted following the standard procedure and all germplasm strains were reared under standards protocols in all rearing steps. From obtained results, it is showed that the larval duration of the 101 (608.000 h), 5118x10133-3-3 (588.670 h), 307-300-2 (584.000 h), 105 (584.000 h) and 31 (584.000 h) strains remained significantly at upper level than other strains, respectively. The feeding larval duration in B2-09 (574.000 h), N19 (533.000 h), 1433-9 (525.000 h), BH-2 (517.330 h) and 1433-15 (511.330 h) strains increased significantly in comparison with other strains. Molting larval duration remained significantly at upper level in I 20 (197.670 h), 107-K (113.000 h), Black Larvae-White Cocoon (104.000 h), 101(104.000 h) and Shaki (103.000 h) increased significantly in comparison with other strains. From obtained results, it is showed the 1-3 instars larval duration of the Black-White (292.670 h), 101 (290.000 h), 1003-5 (288.670 h), 101xF6 (286.000 h) and 31 (286.000 h) strains remained significantly at upper level than other strains, respectively. Totally, 7409 (577.881), Black Larvae-White Cocoon (577.508), 236 (570.769), M-1-2(5) (568.583) and T5-M (566.602) showed higher evaluation index values. Also, 7409 (5.374), 236 (5.267), T5-M (5.183), 113-K (5.163) and White Larvae-Yellow Cocoon (5.027) showed higher sub-ordinate function values.
  M. Salehi Nezhad , S.Z. Mirhosseini , S. Gharahveysi , M. Mavvajpour and A.R. Seidavi
  This study was conducted in ordered to analyze of phylogenetic relationships and determination of relationship amounts in all peanut cocoon strains of Islamic Republic of Iran germplasm based on reproductive characteristics. Hierarchical agglomerative clustering was done by using NTSYS-pc, version 2.02e based on complete, single, UPGMA, UPGMC, FLEXI approaches and SAS-pc based on WARD and average approaches. However, method of average linkage between groups under UPGMA (Unweighted Pair-Group Method using Arithmetic average) was considered as major and final protocol for data conclusion and the resulting clusters were expressed as dendrograms. Various methods generated similar dendograms. This study reveals the phylogenetic relationship of peanut cocoon strains of Iran germplasm. Based on data from studied characters, we constructed dendrograms that resolved the 51 silkworm strains into 2 major clusters. However, the strains of the same origin did not grouped together, demonstrating they can have different biological and development performance. First cluster divided into one sub-group included five strains. However, second cluster divided into two sub-groups. Other strains were grouped together and far from other silkworm strains, indicating they might be suitable for future crossings, maintenance of parental strains and hybridizations with oval cocoon strains so as to maximize heterosis and to avoid depression inbreeding.
  A. Shabdini , A.R. Seidavi , S. Gharahveysi and S.Z. Mirhosseini
  Considering the lake of sufficient information in connection with the three commercial line of silkworm 32, 104, 110 of Islamic Republic of Iran, the objective of research is to investigate the effect of sex, generation, line on economic cocoon traits in these 3 commercial lines. Economic cocoon traits of 3 lines 32, 104, 110 by utilizing 11259 records obtain from four generation in Iran Silkworm Research Center (ISRC) was assessed. The fixed effect of sex, generation, line on traits studied were significant (p<0.01). The commercial lines regarding cocoon traits were also significant which demonstrated the various genetic diversities of commercial lines of silkworm. The total average of the cocoon weight was measured at 1.667±0.0045. The averages of Cocoon Weight trait (CW) in line 32, 104, 110 were 1.734±0.0084, 1.6997±0.0047 and 1.5654±0.0066, respectively. The effect of line was very significant (p<0.001). The effect of the generation was significant too (p<0.001) and the average of 1st generation was higher than other generations and after that there were 3rd, 2nd and 4th generations. The effect of sex was very significant and the average of CW in females and males were 1.85±0.005 and 1.48±0.003 g, respectively. Total mean of Cocoon Shell Weight (CSW) was 0.3618±0.0009 and average of this trait in line 32, 104 and 110 were 0.3902±0.0016, 0.3675±0.0013 and 0.3268±0.0019 g. Effect of all fixed effects were significant on cocoon shell weight. Total average of Cocoon Shell Percentage (CSP) was 21.89±0.044. Average of this trait in line 32, 104 and 110 were 22.736±0.789, 21.8416±0.752 and 21.0677±0.694%. All of the fixed effects were significant on this trait. Average of 1st generation for this trait was 23.794±0.184 and the average of 2nd, 3rd and 4th generations were measured at 21.723±0.079, 21.936±0.081 and 21.628±0.072, respectively. In addition the value of this trait was higher in male than female.
  S. Gharahveysi , N. Emam Jome Kashan , A. Gerami and R. Vaez Torshizi
  Arab horse is a popular pure breed in Iran and is registered by World Arabian Horse Organization (WAHO). There is no scientific study and research about this breed. In this research 13 conformation traits on a random sample of the Iranian Arab horses studied. The estimate of variance components estimated by Animal Model and Derivative Free Restricted Maximum Likelihood (DF-REML) approach and DF-REML software. Heritability of conformation traits is also evaluated. The range of estimated heritability were (0.050 ±0.008) neck length and (0.614 ±0.087) croup height. Results indicated that, conformation traits were good traits for selection and horse genetic evaluation.
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