Genetic Diversity and Population Structure Analysis of Tropical Soybean (Glycine Max (L.) Merrill) using single Nucleotide Polymorphic Markers
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Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
Global Journal of Science Frontier Research
Abstract
Soybean (Glycine max (L.) Merrill) is among the most important crops worldwide due to its
numerous uses in feed, food, biofuel, and significant atmospheric nitrogen fixation capability. To
understand the genetic diversity and population structure of tropical soybean germplasm, 89 genotypes
from diverse sources were analyzed using 7,962 SNP markers. The AMOVA results showed low diversity
among and high within the populations, while the polymorphism information content (PIC) was 0.27. Both
phylogenetic and principal component analysis grouped the 89 soybean genotypes into three major
clusters, while population structure grouped the soybean genotypes into two subpopulations. On the
other, the average Roger genetic distances within the study population was 0.34. The low diversity
reported in the studied soybean germplasm pool is particularly worrying, considering the new trends of
climate change and the emergence of new pests and diseases of soybean. Therefore, in order to address
these challenges and develop soybean varieties with desirable traits, there is a need to broaden the
genetic base of tropical soybean through the importation of germplasm from other countries.
Description
Keywords
Genetic diversity, Population structure, Single nucleotide polymorphism (SNP), Soybean, Tropical soybean genotypes
Citation
Obua, T., Sserumaga, J. P., Opiyo, S. O., Tukamuhabwa, P., Odong, T. L., Mutuku, J., & Yao, N. (2020). Genetic Diversity and Population Structure Analysis of Tropical Soybean (Glycine Max (L.) Merrill) Using Single Nucleotide Polymorphic Markers. Global Journal of Science Frontier Research, 20(6-D).