Quality and quantity comparison of Iranian and foreign walnut verities

This research was conducted in the collection of Kamal shahr Research Station in Karaj, Iran. in order to compare the quantitative and qualitative yields of 8 foreign cultivars including Franquette-Lara-Pedro-Hartley-Serr- Rounde de Montignac-Vina-Chandler and 7 internal genotypes including Z67-Z63. Z30-Z60-Z53-B21 / 1-K72 genotypes was carried out in two replications with alpha latis experiment. After five years of taking notes on quantitative and qualitative traits such as male and female flowering dates, pollen's date, pollen length period, leafing date, Product size, product quality and date of leaf loss, radius of crown extension, trunk diameter and fruit characteristics such as fruit weight, fruit length, diameter Fruit, thick peel, walnut kernel weight percentage kernel were evaluated by walnut descriptor.Regarding vegetative growth (mean height above ground level), the highest vegetative growth was observed in the cultivars of serr,lara &hartley. The highest growth rate was observed in Pedro Ridge. Among the Iranian genotypes, the highest vegetative growth was observed in K72, Z60 and Z67 genotypes. The lowest vegetative growth was observed in Z53 and Z63. Among the genotypes of internal Z53, it was found earlier ripening. According to the product yield, the highest yield was found in Pedro &R.D.M cultivars. Considering the fruit weight, among the external cultivars, the highest fruit weight was in the head of the head serr &franquette with 12.49 grams, 8.57 grams of low weight. Among the Iranian genotypes, the K72 with 15.75 grams were the highest fruit weight and the lowest fruit weight belonged to the Z67 genotype with 10.76 grams. Among the external cultivars, the highest kernel weight belonged to the serr variety with 6.56 grams and the lowest kernel weight Franquette was observed at 3. 28 grams. Among the Iranian genotypes, the highest weight of the kernel was related to K72 (33.7 g). Regarding the color of the kernel, Pedro and Lara cultivars were bright colored and Vina cv. Americans were bright and in the Iranian genotypes Z63, K72 the color of the amber brain was bright. Among the Iranian genotypes, the Z63 clone was easy to separate from the skin of the kernel. Finally, the highest percentage of kernel percentage per fruit was found among the Z53 Iranian genotypes with 55.87/% of the kernel and among the foreign cultivars belonging to the genotype serr with 52.96% of the kernel had the highest percentages .In general, all internal genotypes were more sensitive to winter frost due to the early flowering of the flowers, than the foreign cultivars to be more sensitive to spring frost. Among the foreign cultivars , Vina, is more sensitive to all genotypes. Vina is also sensitive to winter cold. Due to the weight of the fruit in the K72 genotype, it is not recommended due to the loss of flower abscision during fruit formation and in general the low yield. In general, based on the evaluations performed so far, Z63 genotypes are the best genotype as the best genotype and Z 30 as the appropriate pollinator. Among the foreign cultivars, Hartley, Pedro, Chandler as suitable cultivars, and franquette and ronde de montignac as the pollination cultivars are recommended. Therefore, these varieties show a higher production stability in all of the studied traits. The results show that the foreign cultivars R.D.M, Franquette and Pedro late leaves are well-known and the Iranian genotypes Z67, Z63, along with Chandler and Hartley cultivars are in the next groupWalnut, foriegn cultivar, Iranian clone, walnut cultivar and clone comparison