Collection and Genetic Conservation of Persian Walnut Superior Trees in Fars Province
2003
Saadat, Yousef Ali | Zandi, Parviz
Persian walnut (Juglans regia L.) is one of the native plants of Iran, but a considerable work has not been carried out on collecting, identifying and introduction of commercial cultivars so far. By collecting walnut superior trees in a collection, the declining genetic diversity of this tree will be conserved and would be utilized by plant breeders at the present time and future as a gene pool. In this research, budsticks were collected from current season growth shoots of selected superior trees (each tree considered as a genotype) from Persian walnut populations of different regions of Fars province and flute budded on 2 years old seedlings at the multipurpose trees research station of Estahban. At the end of the work, buds of sixty one selected superior trees were taken and 1-3 budded seedlings of each genotype were transferred to collection. Twenty nine fast growing and precocious seedlings were also selected among the seedling population of walnut nursery in Estahban and were transferred to collection. The percentage of bud take in Estahban was low probably due to high temperature, low relative humidity in June and low quality of budsticks. The percentage of bud take were higher in Eghlid and Sepidan counties having cooler weather compared to Estahban, making the vegetative propagation of Persian walnut more practical by flute budding.
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