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Current IssueEditorial BoardOnline First ArticlesArchive

volume 30 issue 3 (september 2007) : 192 - 196

GENETIC DIVERGENCE ANALYSIS IN SUBSPECIES OF COWPEA (VIGNA UNGUICULATA SSP. UNGUICULATA AND VIGNA UNGUICULATA SSP. SESQUIPEDALIS)*

G
G. Valarmathi
C
C. Surendran
A
A.R. Muthiah
1Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore-641 003, India

  • Submitted|

  • First Online |

  • doi

Cite article:- Valarmathi G., Surendran C., Muthiah A.R. (2025). GENETIC DIVERGENCE ANALYSIS IN SUBSPECIES OF COWPEA (VIGNA UNGUICULATA SSP. UNGUICULATA AND VIGNA UNGUICULATA SSP. SESQUIPEDALIS)*. Legume Research. 30(3): 192 - 196. doi: .

ABSTRACT

Sixty nine cowpea genotypes, which included 60 genotypes from Vigna unguiculata ssp. unguiculataand eight genotypes from Vigna unguiculata ssp. sesquipedalis were evaluated for nine quantitative characters and replication-wise means were subjected to Mahalonobis D2 analysis. All the accessions were grouped into twelve clusters, in which cluster I was the largest having 47 genotypes from sub species unguiculata. Unguiculata were grouped in seven distinct clusters, whereas the genotypes ofSesquipedalis were grouped in five other distinct clusters. Days to maturity contributed maximum to the genetic divergence followed by hundred seed weight and characters namely number of branches per plant, number of seeds per pod and total exhibited least contribution among the accessions.

KEYWORDS

    REFERENCES

    1. Anbuselvam, Y. et al. (2002). Madras Agric. J. 87 (4-6): 343 - 345.
    2. Baudoin, J.P. and Marechal, R. (1985) In: Cowpea Research, Production and Utilization. (Singh S.R. and Rachie K.O. (Eds.)) Wiley, New York pp. 3-9.
    3. Engeles, J.M.M. (1989). Collaboration on Genetic Resourses, ICRISAT, Patancheru pp 47-52.
    4. Mahalanobis, P.C. (1936). J. Genet., 41 : 159-193.
    5. Murty, B.R., and Arunabhalam, V. (1966). India J. Genet., 26: 188-198.
    6. Rao, C.R. 1952. Advanced Statistical Methods in Biometrical Research. John Wiley and Sons, New York.
    7. Rewale, et al. (1997). Indian. J. Agric. Res. 2 : 73-79.
    8. Singh, B.B. et al. (1997). In: Advances in Cowpea Research Ed. (B.B. Singh. et al.). pp: 36-54.
    9. Ushakumari, R., S. et al. (2000). Legurue Res., 23 : 122-125.
    10. Viswanathan, PL. et al. (1998). Madras Agric. J. 85 : 132-133.
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      volume 30 issue 3 (september 2007) : 192 - 196

      GENETIC DIVERGENCE ANALYSIS IN SUBSPECIES OF COWPEA (VIGNA UNGUICULATA SSP. UNGUICULATA AND VIGNA UNGUICULATA SSP. SESQUIPEDALIS)*

      G
      G. Valarmathi
      C
      C. Surendran
      A
      A.R. Muthiah
      1Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore-641 003, India

      • Submitted|

      • First Online |

      • doi

      Cite article:- Valarmathi G., Surendran C., Muthiah A.R. (2025). GENETIC DIVERGENCE ANALYSIS IN SUBSPECIES OF COWPEA (VIGNA UNGUICULATA SSP. UNGUICULATA AND VIGNA UNGUICULATA SSP. SESQUIPEDALIS)*. Legume Research. 30(3): 192 - 196. doi: .

      ABSTRACT

      Sixty nine cowpea genotypes, which included 60 genotypes from Vigna unguiculata ssp. unguiculataand eight genotypes from Vigna unguiculata ssp. sesquipedalis were evaluated for nine quantitative characters and replication-wise means were subjected to Mahalonobis D2 analysis. All the accessions were grouped into twelve clusters, in which cluster I was the largest having 47 genotypes from sub species unguiculata. Unguiculata were grouped in seven distinct clusters, whereas the genotypes ofSesquipedalis were grouped in five other distinct clusters. Days to maturity contributed maximum to the genetic divergence followed by hundred seed weight and characters namely number of branches per plant, number of seeds per pod and total exhibited least contribution among the accessions.

      KEYWORDS

        REFERENCES

        1. Anbuselvam, Y. et al. (2002). Madras Agric. J. 87 (4-6): 343 - 345.
        2. Baudoin, J.P. and Marechal, R. (1985) In: Cowpea Research, Production and Utilization. (Singh S.R. and Rachie K.O. (Eds.)) Wiley, New York pp. 3-9.
        3. Engeles, J.M.M. (1989). Collaboration on Genetic Resourses, ICRISAT, Patancheru pp 47-52.
        4. Mahalanobis, P.C. (1936). J. Genet., 41 : 159-193.
        5. Murty, B.R., and Arunabhalam, V. (1966). India J. Genet., 26: 188-198.
        6. Rao, C.R. 1952. Advanced Statistical Methods in Biometrical Research. John Wiley and Sons, New York.
        7. Rewale, et al. (1997). Indian. J. Agric. Res. 2 : 73-79.
        8. Singh, B.B. et al. (1997). In: Advances in Cowpea Research Ed. (B.B. Singh. et al.). pp: 36-54.
        9. Ushakumari, R., S. et al. (2000). Legurue Res., 23 : 122-125.
        10. Viswanathan, PL. et al. (1998). Madras Agric. J. 85 : 132-133.
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