Genetic relatedness of soybean genotypes based on agromorphological traits and RAPD markers

Abstract

Modern agriculture, breeding procedures, as well as competition among breeding institutions contribute to further reduction of already narrowed diversity of soybean commercial varieties. The objective of the study was to characterize eighteen soybean cultivars from three different breeding programs for agro-morphological traits and to reveal genetic diversity using molecular markers. Morphological description was performed with 13 qualitative and 9 quantitative traits. The genetic relationships were estimated using 21 RAPD markers. PIC was calculated for RAPD data, while the diversity of qualitative traits was described by Shannon genetic diversity index. Cluster analysis based on qualitative morphological characters showed clear separation of genotypes on the basis of their plant growth type. PC analysis performed for quantitative traits divided genotypes according to their maturity group. Grouping pattern based on molecular marker data was in agreement with pedigree of cultivars. A great similarity was found, primarily between the varieties under the same institution, and then among all examined varieties. Comparison of three methods in the assessment of diversity indicated that morphological markers might provide useful information in breeding process and allow classification by pedigree to some extent, but RAPD markers were found to be superior in assessing differences among genetically very similar genotypes. [Projekat Ministarstva nauke Republike Srbije, br. TR-31068]

Characterization and interrelationships of soybean [Glycine max (L.) Merrill] yield components during dry and humid seasons

“…The varieties of this group with an average number of days to maturity (133), bred in this part of region have shown similar performance, which is in accordance with the findings of Vratarić and Sudarić (2008) that for this part of the region the optimal maturity group of soybean is from 130 to 135 days. It is also indicated in the conclusions of Ristova et al (2010) and Perić et al (2014). …”

Characterization and clustering of agronomic characters of several soybean genotypes

“…The identified character for each cluster depends on the genetic material used or is also determined by the origin of the gene source used. According to Peric et al (2014), a great similarity was usually found, primarily between the varieties come from the same institution because these varieties, generally, were developed from the same crosses.…”

Improving Seed Quality of Soybean Suitable for Growing in Europe

“…This process, which Harlan [19] called genetic erosion, appears because of the replacement of diverse indigenous populations with modern, new, uniform cultivars and hybrids, and it causes a considerable threat to the production of food and hence the survival of humans. A narrow genetic base has been identified in most soybean germplasm studies [20,21]. However, Hahn and Würschum [22] noted that the genetic base of middle European genotypes was not as narrow as expected because of the unsystematic phenotype selection.…”