Showing 3 results for Talei
A. Baghizadeh , A. Talei, M.r. Naghavi, M. Haji Rezaei,
Volume 12, Issue 43 (spring 2008)
Abstract
In order to estimate the number and inheritance of controlling genes for grain yield and some of the related traits in barley, Afzal and Radical varieties along with their F1, F2 and F3 generations were planted in a randomized complete block design with three replications. Head weight, head length, number of heads, number of spikelets, awn length, hundred grain weight, grains per head, straw yield per head , harvest index and grain yield in different generations were recorded. Analysis of variance indicated that mean squares of generations were statistically significant for all the traits. Then, generation mean analysis was performed for all the traits. Based on the results, additive and dominance effects played roles in controlling awn length. For the other traits besides the aforesaid effects, epistasis effect was also significant. Also, results indicated that dominance variance had the most important role in controlling the inheritance for traits. The average broad sense heritability for all the traits was estimated between %69 - %89. The number of genes for all traits was estimated to be between one and six.
M Zabet, M.r Bihamta, A Talei, M Mardi, H Zeynali, Kh Bagheri,
Volume 12, Issue 46 (fall 2009)
Abstract
To study general combining ability(GCA) and gene action for resistance to sunn pest(Eurygaster integriceps) six lines of bread wheat numbered 7214 ,6412,c-75-4,18,14,12 plus azadi variety werw crossed in a half-diallel system. Seven parents and twenty-one hybrids were evaluated in a randomized complete block design with 3 replication at Tehran University Research Station during the years 2005-2006. Analysis of variance indicated that among all of traits except for weight of sunn pest damaged kernel, difference existed at 1% level of significant. Results of combining ability analysis showed that in all traits, additive and non- additive variances in inheritance is important. Considering GCA for resistance to sunn pest line 7214 was the best and line 18 was the worst. Considering specific combining ability(SCA) for resistance to sunn pest damage with regard to all of traits the azadi×c-75-4 hybrid was the best and the 18×12 hybrid was the worst. Study of Hayman genetics parameters confirmed the results of Griffing GCA analysis indicating that in all traits additive and non- additive components are effective in inheritance except 50 kernel weight damaged, sunn pest seed damaged percent and height. But dominant variance is more important in these traits. For all traits except awn length exist over dominance, furthermore in all traits nonsymmetrical distribution of negative and positive effects and environment effect is also important.
A Gharghni, A Talei, Z Zamani, M Fatahi Moghadam, H Haj Najari, S Gardiner,
Volume 13, Issue 48 (7-2009)
Abstract
A population of offspring from a cross between ‘Golden Smoothee’ × ‘Shafi Abadi’ apple which was developed by two methods of controlled pollination (with and without covering after controlled pollination) was used to investigate the inheritance of microsatellite alleles and the necessity of covering in controlled pollination of apple. DNA was extracted from 60 seedlings (30 from each method) as well as corresponding parents and the probable source of unwanted pollen. Four microsatellite loci (CH03d12, CH03d07, CH04a12 and CH03c07) which were polymorphic among parents were selected and their florescent primers were prepared. DNA amplification was carried out using different colored florescent primers, and alleles size were determined using ABI377 automatic gene sequencer and Gene Scan Software version 2.0 according to internal standards. Results showed that all seedlings shared one allele at each locus with each parent indicating their hybrid and true to type nature. There were no differences between two methods of controlled pollination in terms of unwanted pollination and there were no off type seedling originating from unwanted pollen source. Allele distribution among the progenies showed their co-dominant mode of inheritance, and no significant difference with Mendelian co-dominant ratio (1:1:1:1) was observed using chi square (x2) test. These results showed that there was no need for covering after controlled pollination of apple at least for less sensitive cases such as cultivar breeding which takes lots of time and cost for controlled pollination of many flowers in a limited time span. Results also showed the importance and potential of microsatellite loci in detecting parent-offspring relationship prior to inheritance study of characters and alleles, bulk segregation analysis, gene and linkage map and historical reconstruction of fruit tree pedigree.
