موسی رسولی (عضو هیئت علمی انتقال یافته به دانشگاه بین المللی امام خمینی قزوین)

In this experiment, in order to evaluate the pomological diversity, twenty persimmon genotypes, from northern (Mazandaran and Gilan provinces) and central (Tehran and Alborz provinces) parts of Iran, were collected and evaluated according to the some fruit and seed traits. The results showed that there was a considerable diversity among the genotypes in terms of pomological traits. Meanwhile, the diversity in seed traits was far greater than the diversity in fruit traits. So that, the highest coefficient of variation was observed in seed diameter (135.23%), while, the lowest value was observed in fruit width (11.68%). The fruit of some genotypes was seeded and the fruit of some genotypes were seedless. The variation of fruit weight ranged from 95.44 to 251.76 g, and in terms of astringent taste, some genotypes were highly astringent, however, some genotypes were completely non-astringent. The study of correlation between traits showed that there was a positive and significant correlation between fruit length and fruit weight with seed dimensions, and fruits with larger seeds had larger size too. Also, the astringent taste of fruit showed a negative and significant correlation with seed traits, so that, seeded fruits had less astringent taste. The correlation between tissue firmness and fruit astringent taste was significant but negative. The results of PCA showed that the four main factors explained 85% of the total variance, and among which the first factor alone explained 48% of the total variance. All seed traits and some fruit traits were effective in the first factor. Based on cluster analysis, genotypes were divided into four main groups, traits such as the presence or absence of seeds and length to width ratio or fruit shape were the important factors in separation of the genotypes. In general, three types of fruits shape, including round, conical and elongated could be distinguished among the fruits.