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Current IssueEditorial BoardOnline First ArticlesArchive

volume 31 issue 2 (june 2008) : 94 - 99

STUDIES ON SKEWNESS, KURTOSIS AND TRANSGRESSIVE VARIATION IN M2 POPULATIONS OF RICE BEAN (VIGNA UMBELATA) VARIETIES

R
R.C. Misra
P
P.K. Sahu
C
C.R. Jali
H
H.P. Mishra
L
L.D. Misra
1Department of Plant Breeding and Genetics, Orissa University of Agriculture and Technology, Bhubaneswar-751 003, India.

  • Submitted|

  • First Online |

  • doi

Cite article:- Misra R.C., Sahu P.K., Jali C.R., Mishra H.P., Misra L.D. (2025). STUDIES ON SKEWNESS, KURTOSIS AND TRANSGRESSIVE VARIATION IN M2 POPULATIONS OF RICE BEAN (VIGNA UMBELATA) VARIETIES. Legume Research. 31(2): 94 - 99. doi: .

ABSTRACT

Seeds of five rice bean varieties viz. RBL-1, BRB-4, PRR-9302, PRR-2 and RBL-50 were
treated with 40 kr. dose of Gamma-rays. Distribution parameters like mean, range, variance,
skewness and kurtosis were estimated in the parental and M2 populations for six traits – plant height,
clusters/plant, pods/plant, seeds/pod, 100-seed wt. and yield/plant. The M2 populations showed
considerable increase in variance in all traits due to induction of micromutations. M2s of varieties
having higher expression of traits mostly showed negative skewness and reduction in mean due to
induction of more micromutations with negative effect on the trait. Conversely, M2s of varieties
having low values for traits showed positive skewness and increase in mean due induction of more
micromutations with positive effect. However M2s of varieties with moderate values did not show
skewness and were platykurtic (flatter) with out much change of mean from controls. This can be
attributed to almost equal frequent induction of micromutations with positive and negative effects.
Transgressive variation parameters indicated that selection for improvement of trait would be more
effective in M2s of RBL-50, BRB-4 and PRR-9302 for cluster/plant and pods/plant, of RBL-50 and
RBL-1 for seeds/pod, of BRB-4, RBL-1 and PRR-9302 for 100-seed wt. and of PRR-9302, RBL-50
and BRB-4 for yield.

KEYWORDS

    REFERENCES

    1. Aastveit, K. (1966). Proc. Panel. Mutations in Plant Breeding, IAEA, Vienna, pp.7-14.
    2. Balint, A. and Dudits D. (1969). Novenytermeles, 17: 187-196.
    3. Bateman, A.J. (1959). Int. J. Rad. Biol., 1: 425-427.
    4. Brock, R.D. (1965). The Use of Induced Mutations in Plant Breeding (FAO/IAEA Tech. Meeting, Rome, 1964).
    5. Pergamon Press, Oxford: 443-450.
    6. Gaul, H. (1967). Proc. Symp. Induced Mutation and Their Utilization, Berlin 1966, p.209
    7. Gupta, S.C.(1981). Fundamentals of Statistics. Himalaya Publishing House, Bouding. P.418-464.
    8. Lokesh, R. and Veeresh ,L.C. (1993). Legume Res., 16(1-2): 37-40.
    9. Oka, H.I. et al. (1958). J. Heredity, 49: 11-14
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      volume 31 issue 2 (june 2008) : 94 - 99

      STUDIES ON SKEWNESS, KURTOSIS AND TRANSGRESSIVE VARIATION IN M2 POPULATIONS OF RICE BEAN (VIGNA UMBELATA) VARIETIES

      R
      R.C. Misra
      P
      P.K. Sahu
      C
      C.R. Jali
      H
      H.P. Mishra
      L
      L.D. Misra
      1Department of Plant Breeding and Genetics, Orissa University of Agriculture and Technology, Bhubaneswar-751 003, India.

      • Submitted|

      • First Online |

      • doi

      Cite article:- Misra R.C., Sahu P.K., Jali C.R., Mishra H.P., Misra L.D. (2025). STUDIES ON SKEWNESS, KURTOSIS AND TRANSGRESSIVE VARIATION IN M2 POPULATIONS OF RICE BEAN (VIGNA UMBELATA) VARIETIES. Legume Research. 31(2): 94 - 99. doi: .

      ABSTRACT

      Seeds of five rice bean varieties viz. RBL-1, BRB-4, PRR-9302, PRR-2 and RBL-50 were
      treated with 40 kr. dose of Gamma-rays. Distribution parameters like mean, range, variance,
      skewness and kurtosis were estimated in the parental and M2 populations for six traits – plant height,
      clusters/plant, pods/plant, seeds/pod, 100-seed wt. and yield/plant. The M2 populations showed
      considerable increase in variance in all traits due to induction of micromutations. M2s of varieties
      having higher expression of traits mostly showed negative skewness and reduction in mean due to
      induction of more micromutations with negative effect on the trait. Conversely, M2s of varieties
      having low values for traits showed positive skewness and increase in mean due induction of more
      micromutations with positive effect. However M2s of varieties with moderate values did not show
      skewness and were platykurtic (flatter) with out much change of mean from controls. This can be
      attributed to almost equal frequent induction of micromutations with positive and negative effects.
      Transgressive variation parameters indicated that selection for improvement of trait would be more
      effective in M2s of RBL-50, BRB-4 and PRR-9302 for cluster/plant and pods/plant, of RBL-50 and
      RBL-1 for seeds/pod, of BRB-4, RBL-1 and PRR-9302 for 100-seed wt. and of PRR-9302, RBL-50
      and BRB-4 for yield.

      KEYWORDS

        REFERENCES

        1. Aastveit, K. (1966). Proc. Panel. Mutations in Plant Breeding, IAEA, Vienna, pp.7-14.
        2. Balint, A. and Dudits D. (1969). Novenytermeles, 17: 187-196.
        3. Bateman, A.J. (1959). Int. J. Rad. Biol., 1: 425-427.
        4. Brock, R.D. (1965). The Use of Induced Mutations in Plant Breeding (FAO/IAEA Tech. Meeting, Rome, 1964).
        5. Pergamon Press, Oxford: 443-450.
        6. Gaul, H. (1967). Proc. Symp. Induced Mutation and Their Utilization, Berlin 1966, p.209
        7. Gupta, S.C.(1981). Fundamentals of Statistics. Himalaya Publishing House, Bouding. P.418-464.
        8. Lokesh, R. and Veeresh ,L.C. (1993). Legume Res., 16(1-2): 37-40.
        9. Oka, H.I. et al. (1958). J. Heredity, 49: 11-14
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