Assessment of drought tolerant sugar beet top-cross hybrids using SSR molecular marker

قنبری, سعیده and مشتاقی, نسرین and احمدی, مسعود and میرشمسی کاخکی, امین Assessment of drought tolerant sugar beet top-cross hybrids using SSR molecular marker. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

Drought stress is one of the most important abiotic stresses that limits crop production in the world. Identification of superior crop genotypes is the first step in breeding programs, while molecular markers reduce the time needed for breeding projects. Sugar beet is one of the most important herbs that plays a key role in providing food in the world. In this research, 20 sugar beet hybrids were used to study diversity with 10 SSR primers and to determine the relationship between this diversity and drought tolerance. Genetic variability indices in sugar beet showed that the highest PIC (polymorphism information content ) in the SSR was related to BQ583448 marker (76%). Cluster analysis based on molecular data was performed using Jaccard's similarity coefficient and UPGMA method. According to the cluster analysis of morphological data and the SSR marker, they were approximately the same (about 80%). As a result, a study of genetic diversity in terms of drought tolerance with SSR marker is useful and this marker is suitable for the detection of genetic diversity and genetic relationships in breeding programs of this plant.

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