Sesame (Sesamum indicum L.) is a survivor crop. It is one of the most important oilseed crops. Despite of its tolerance, drought is one of the most important environmental factors that limit sesame production. Iran has an arid and semi-arid climate and very fertile lands for agriculture that the main factor limiting production is their lack of water. In this study, the experimental treatments consisted of irrigation levels as the main plot at four levels and fifteen cultivars of Sesame as the subplot was considered. Morpho-agronomic traits such as plant height, number of capsules per plant, seed number/capsules, weight of 1000 seeds, number of branches, grain yield, number of leaves per plant, biomass, and oil content were recorded. The study of analysis of variance (ANOVA) showed significant differences at P<0.01and P<0.05 among cultivars and irrigation levels for all traits. Results of Duncan's test indicated that Darab14, TS3, Halil, Yellow, white and JL13 cultivars were found to be the best cultivars for normal and drought stress conditions. Genetic diversity was also studied based on various Morpho-agronomical traits using analysis of cluster and principal component analysis among studied cultivars. Analysis of cluster indicated that the

The effects of BAP on the micro tuberization were evaluated using five commercial cultivars of potato. Potato tubers were planted in the greenhouse and young shoots were cut and transferred to Tissue Culture Laboratory of Agricultural Research Institute. Apical and axillary bud explants were cultured on liquid MS medium containing 2 mgl-1 GA 3. The biological samples were subculture every four weeks on the same medium for plantlet production and propagation. Then, for plantlets micro tuberization, plantlets were cultured on liquid MS medium with different concentrations of BAP (0, 5, 10, 15 and 20 mgl-1). After eight weeks characteristics, such as the number of micro tubers, micro tuber fresh weight, micro tuber dry weight, the mean of micro tuber diameter, the mean of eyes number, the mean of small micro tuber diameter, the mean of large micro tuber diameter, the mean of eyes number on the small micro tubers and the mean of eyes number on the large micro tubers were recorded. Morphological parameters of micro tubers varied significantly among cultivars and BAP concentrations at P < 0.05 or P < 0.01. Results indicated that cultivars produced significantly higher number of micro tubers in the presence of BAP. For the tested cultivars, micro tuberization was maximum in liquid MS medium containing 5 mgl-1 BAP and it was lowest in 0 mgl-1 BAP.

Fifteen Roselle (Hibiscus sabdariffa L.) accessions were collected from different geographical regions of Baluchestan in Iran and were grown in Randomized Complete Block Design (RCBD) with three replications. Data were recorded on days to 50% flowering (Calyces were harvested when they were tender and plump). When flowering reached 50%, data recording was started (Calyces were harvested when they were tender and plump). Morphological analysis indicated that all the studied characteristics have a significant difference at P< 0.05 or P< 0.01 among Roselle accessions. Cluster analysis indicated slight differences among accessions. Some of accessions performed better than others and were ranked higher. According to the results, the average of similarity among accessions was 97%. Thus, the observed morphological differences and similarity values of Hibiscus sabdariffa L. accessions maintained at Iran suggest that all the accessions possess a useable slight genetic diversity. Also, phenotypic correlations between various morphological characteristics indicated that there were highly significant correlations at P< 0.05 or P< 0.01 among the most studied characteristics. Phenotypic correlations indicated that some associated factors correlate with each other and contribute in the occurring of these characteristics.