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      • Open Access Article

        1 - Diversity and Heritability of Morphophysiological Traits and Essential Oil of Oliveria decumbens Vent.in Iran.
        Seyed Mohammad Hosein Ale Omrani Nejad Hassanali Naghdi Badi Ali Mehrafarin Vahid abdousi Farahnaz Khalighi Sigaroodi
        In order to investigate the diversity of 25 populations, an experiment was conducted using 18 morphophysiological characteristics and percentage of essential oil.Samples were collected at their full flowering phase and morphophysiological characteristics were recorded.T More
        In order to investigate the diversity of 25 populations, an experiment was conducted using 18 morphophysiological characteristics and percentage of essential oil.Samples were collected at their full flowering phase and morphophysiological characteristics were recorded.The results showed a variation among populations. By calculating genetic and environmental variances, changes in most traits including: stem leaf length, stem leaf width and stem leaf width/length, umbellule diameter, umbellule 100 dry weight/ umbellule 100 wet weight and a chlorophyll/b chlorophyll were determined by genetic factors. The general heritability showed the percentage of essential oil, umbellule number in plant and umbellule 100 dry weight were 0.91, 0.51 and 0.77, respectively. Study of correlation between characteristics and stepwise regression exhibited the greatest impact of the flower texture on essential oil production and umbellule 100 dry weight. Based on the factor analysis results, the three main factors justified 78.6% of the total variation among the characteristics. The biomass of the plant was the first factor followed by percentage of essential oil and flower weight as the second and third factors, respectively. Based on the cluster analysis results, the populations can be divided into 5 groups; in which third and fifth groups, with the highest average percentage of essential oil and maximum Umbellule 100 dry weight and Umbellule numbers in a plant, exhibited a great potential for cultivation. Moreover, the populations in cluster 1 and 4 alternatively have the greatest genetic distance from each other which can be exploited in cross over and production of synthetic seeds. Manuscript profile
      • Open Access Article

        2 - Response of yield and yield components of aerobic rices in climate condition of Ahvaz
        Farideh Zohrabi1 Zahra Khodarahmpour2 Abdolali gilani3
        Aerobic rice is a new type of rice adapted to aerobic soil. This study was conducted to evaluate aerobic rice utilizes multivariate statistical techniques in a randomized complete blocks design with three replications in Shavoor Khuzestan Agricultural Research Center in More
        Aerobic rice is a new type of rice adapted to aerobic soil. This study was conducted to evaluate aerobic rice utilizes multivariate statistical techniques in a randomized complete blocks design with three replications in Shavoor Khuzestan Agricultural Research Center in 2014. In this experiment, yield and yield components of 9 aerobic lines plus Danial cv. were examined. Results showed that there was significant difference in 1% probability level between lines the trait of the number of primary branches, panicle weight, number of grains per panicle, panicle length, plant height, panicle fertility percent, 1000 grain weight and days to heading. The narrow sense heritability of 18% in yield to 49% in panicle fertility percent was variable. There was a positive and significant correlation between grain yield with panicle weight, number of grains per panicle and panicle fertility percent. Cluster analysis basis ward’s method stated that IR81025-B-347-3 was in a group and other aerobic lines with Daniel in the other group. Aerobic line IR81025-B-347-3 with having the highest number of primary branches, panicle length, number of grains per panicle, panicle weight, panicle fertility percent and grain yield and located in the desirable area biplot as the best lines in terms of morphological traits in aerobic soil conditions and intermittent irrigation was identified as high-performing of line for further research. Manuscript profile
      • Open Access Article

        3 - Effect of agronomic traits and drought resistance indices on determination of susceptible and tolerant sunflower lines
        babak maghsodi damavandi shahram lak mahdi ghafari mojtaba alavi fazel tayeb saki nezhad
         In order to determine the susceptible and tolerant lines of sunflower to drought stress, acompletely randomized block design with three replications was conducted at Karaj seed OilResearch Institute. In this study, 12 different sunflower lines have been identified More
         In order to determine the susceptible and tolerant lines of sunflower to drought stress, acompletely randomized block design with three replications was conducted at Karaj seed OilResearch Institute. In this study, 12 different sunflower lines have been identified for thecharacteristics related to drought tolerance and were selected two susceptible and tolerantlines. Initially, sunflower lines were cultivated in two separate experiments under normalirrigation and drought stress conditions. Drought stress was carried out through stop irrigationin step 2 to 8 leaves formation. The studied traits included agronomic characteristics anddrought stress indices of sunflower, such as Plant height, Stem diameter, Head diameter, Seedyield, Leaf Area Index, Relative Water Content, SSI and STI. The studied traits weresignificantly different in water stress, except stem diameter. After analyzing the tested factorsand analyzing the data, the results were obtained by analyzing the percentage of variation ofstudied traits, calculating stress indices (drought tolerance indices, drought sensitivity) anddendrogram drawing from Cluster analysis of cultivars was identified. According to theresults, in terms of water deficit stress, RGK26 and RGK41 produced the highest and thelowest seed yield per plant. Comparison of traits can identify BGK221 as susceptible line andRGK46 as tolerant line among 12 studied lines. Also, correlation between traits showed thatdrought tolerance index (STI) was positively correlated with almost all traits. In addition,grain yield was positively correlated with all traits except plant height.  Manuscript profile