Detecting and determining self-incompatibility alleles in almond genotypes using molecular method.

OSF Preprints
Sorush Niknamian


Abstract One of the problems in almond production is self-incompatibility in this plant, which is considered as an important improvement point for this tree. Self-incompatibility causes non-uniformity and garden management problems. Most cultivars of almonds have gametophytic self-incompatibility that is controlled by a multi-allelic gene site. The inoculation inhibitor factor in this inhibitory system is the stop of pollen tube growth in the style. This study aims to detect and determine the self-compatible genotype from among the studied samples and determine the self-incompatibility alleles in the studied masses. For the experiment, the leaf samples were collected from 100 almond genotypes that had good products in recent years. The DNA of young leaf samples in these genotypes was extracted using Gept and Celeg (1989) method with a few changes. Today, various methods have been invented for detecting the genotypes and self-compatible cultivars from selfincompatible cultivars as well as S alleles in almonds, including the PCR method. Therefore, in order to detect S alleles in different almond and some hybrid genotypes, the exclusive primer pairs, including AS1II-AmyC5R, ConF-ConR and Cebador2-Cebador8, were used in the polymer...Continue Reading

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