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Identification of Phenotypic Variation and Genetic Diversity in Rice ( Oryza sativa L.) Mutants

Author

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  • Truong Thi Tu Anh

    (Graduate School for International Development and Cooperation, Hiroshima University, 1-5-1 Kagamiyama, Higashi-Hiroshima City, Hiroshima 739-8529, Japan)

  • Tran Dang Khanh

    (Agricultural Genetics Institute, Pham Van Dong Street, Hanoi 122300, Vietnam)

  • Tran Dang Dat

    (Khai Xuan International Co., Ltd., Cau Giay District, Hanoi 122000, Vietnam)

  • Tran Dang Xuan

    (Graduate School for International Development and Cooperation, Hiroshima University, 1-5-1 Kagamiyama, Higashi-Hiroshima City, Hiroshima 739-8529, Japan)

Abstract

In this study, phenotypic variation and genetic diversity, important factors to decide germplasm for rice breeding, were evaluated among 15 rice mutants attained from the MNU ( N -Nitroso- N -methylurea) mutation. The correlation coefficient values among these phenotypic characteristics were calculated. The results showed that full grain number per plant was the most relevant factor contributing to grain yield per plant, and grain length to width ratio was the key parameter affected to amylose content. Furthermore, the genetic variation among mutants was estimated by Simple Sequence Repeat (SSR) markers related to amylose content trait. Fifty-six polymorphism markers covering across eleven rice chromosomes were recorded with an average of 3.02 alleles per locus. The average value of polymorphism information content was 0.47. By using the unweighted pair group method with arithmetic mean (UPGMA) clustering, four clusters were generated with the genetic similarities ranging from 0.52 to 0.91. The variation among groups was 34%, while the variation among individuals within groups was 66%. Findings of this study provided useful genetic background and phenotypic information of collected rice mutants to breed rice cultivars with improved quality.

Suggested Citation

  • Truong Thi Tu Anh & Tran Dang Khanh & Tran Dang Dat & Tran Dang Xuan, 2018. "Identification of Phenotypic Variation and Genetic Diversity in Rice ( Oryza sativa L.) Mutants," Agriculture, MDPI, vol. 8(2), pages 1-15, February.
    • Handle: RePEc:gam:jagris:v:8:y:2018:i:2:p:30-:d:133004
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    Citations

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    Cited by:

    1. Can Thu Huong & Truong Thi Tu Anh & Hoang-Dung Tran & Vu Xuan Duong & Nguyen Thanh Trung & Tran Dang Khanh & Tran Dang Xuan, 2020. "Assessing Salinity Tolerance in Rice Mutants by Phenotypic Evaluation Alongside Simple Sequence Repeat Analysis," Agriculture, MDPI, vol. 10(6), pages 1-11, May.
    2. Tran Dang Xuan & Truong Thi Tu Anh & Hoang-Dung Tran & Tran Dang Khanh & Tran Dang Dat, 2019. "Mutation Breeding of a N -methyl- N -nitrosourea (MNU)-Induced Rice ( Oryza sativa L. ssp. Indica ) Population for the Yield Attributing Traits," Sustainability, MDPI, vol. 11(4), pages 1-15, February.
    3. Kifayatullah Kakar & Tran Dang Xuan & Nguyen Van Quan & Imran Khan Wafa & Hoang-Dung Tran & Tran Dang Khanh & Tran Dang Dat, 2019. "Efficacy of N -Methyl- N -Nitrosourea Mutation on Physicochemical Properties, Phytochemicals, and Momilactones A and B in Rice," Sustainability, MDPI, vol. 11(23), pages 1-13, December.
    4. Kifayatullah Kakar & Tran Dang Xuan & Nguyen Van Quan & Imran Khan Wafa & Hoang-Dung Tran & Tran Dang Khanh & Tran Dang Dat, 2019. "Efficacy of N -methyl- N -nitrosourea (MNU) Mutation on Enhancing the Yield and Quality of Rice," Agriculture, MDPI, vol. 9(10), pages 1-11, September.

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