Assessment of Genetic Diversity of Yellow Waxy Corn Germplasm Based on Phenotype and SSR Markers

Received: 21-12-2022

Accepted: 05-10-2023

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Issue: Vol. 21 No. 10 (2023)

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NÔNG HỌC

How to Cite:

Duc, N., Tuan, P., Anh, N., Trung, N., Cham, L., & Liet, V. (2024). Assessment of Genetic Diversity of Yellow Waxy Corn Germplasm Based on Phenotype and SSR Markers. Vietnam Journal of Agricultural Sciences, 21(10), 1236–1248. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/1207

Assessment of Genetic Diversity of Yellow Waxy Corn Germplasm Based on Phenotype and SSR Markers

Nguyen Trung Duc (*) 1 , Pham Quang Tuan 1 , Nguyen Thi Nguyet Anh 1 , Nguyen Quoc Trung 2 , Le Thi Tuyet Cham 3 , Vu Van Liet 3

  • 1 Viện Nghiên cứu và Phát triển cây trồng, Học viện Nông nghiệp Việt Nam
  • 2 Khoa Công nghệ Sinh học, Học viện Nông nghiệp Việt Nam
  • 3 Khoa Nông học, Học viện Nông nghiệp Việt Nam

    • Keywords

    Yellow waxy corn, phenotype, SSR marker, correlation, principal component analysis

    Abstract


    This study aimed to assess the genetic diversity of 15 yellow waxy corn genotypes with 3 check lines using 18 agronomic traits and 14 SSR markers. The field experiment was arranged in a randomized complete block design with 3 replicates in 2022 Spring season in Hanoi. The results showed that single plant grain yield was strongly positively correlatedwith cob diameter (r = 0.72), 100 grains weight (r = 0.62), and number of kernels per row (r = 0.61). Total soluble solids were negatively correlated (P <0.01) with pericarp thickness (r = -0.62). Principal component analysis showed that all of the investigated traits could be used for phenotypic diversity analysis. PIC values ranged from 0.10 (phi072and phi1277) to 0.32 (phi2276). Corn genotypes were classified into 3 groups at the similarity coefficient 45.3 based on phenotype, and into 5 groups at the similarity coefficient 0.21 based on SSR markers. Seven lines viz., YW01, YW03, YW4, YW7, YW12, YW13, YW14 and two checks viz., SWsyn1, UV showed consistent in phenotypic and genotypic grouping. Five promising lines were selected viz., YW10, YW13, YW12, YW07, and YW01 based on MGIDI index with 40% selection pressure.

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