Evaluation of genetic diversity in Datura (Daturea Stramonium L.) ecotypes based on morphological traits

In order to study genetic diversity of some Daturea ecotypes based on morphological characteristics, Sixecotypes were collected from different parts of the country (Hamedan, Tehran, Gilan, Mashhad, Ardabil andMoghan). An experiment was conducted based on Completely Randomized Design with three replications in 2014.According to the results difference among genotypes were significant in the leaf length mean, leaf width mean andnumber of seeds per head at 1% probability level and on the main stem height, internodes length, angle and leaf areaindex mean at 5% probability level. Ardabil ecotype had the highest length and width of the leaf. Also Mashhad andHamedan ecotypes had the highest number of seeds and Moghan had the lowest seed number in the capsule. Thecorrelation coefficients showed that the maximum positive correlation was between fresh weight and total plantfresh weight (r= 0.98) and negative correlation between stem dry weight and number of seeds (r= -0.92). In thisstudy, factor analysis were placed measured features in five main and independent factors. Factors with eigenvalueshigher than one were justified 100 percent of total variance. Based on the cluster analysis, six studied ecotypes werein two groups. The first group consists of Ardabil, Hamedan, Mashhad and Moghan and the second group Gilan andTehran ecotypes.

Keywords:

Daturea , Iranian ecotypes , morphological diversity , cluster analysis