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International Journal of Tropical Insect Science

, Volume 5, Issue 6, pp 475–479 | Cite as

Development of Stable Resistant Cultivars for Stem-Borer, Chilo Partellus (Swinhoe) in Sorghum

  • Prem Kishore
Research Article

Abstract

Twelve cultivars were grown along with released high yielding hybrid CSH-1 (susceptible to stem-borer) to investigate their relative resistance to stem-borer at three locations. Results obtained have established that the 12 cultivars possess moderate levels of resistance to stem-borer. The damage suffered by them was significantly lower than CSH-1. Further, four cultivars viz. E601, E 602, E 603 and E 604 suffered less damage.

The stability of the resistance was worked out by following the model of Eberhart and Russell (1966) [Crop Sci. 6, 36–40]. The means of various cultivars were calculated and regression coefficients (bi) were tested against unity to locate most adaptable cultivar for borer damage. The cultivar × environment interactions for leaf injury and stem tunnelling (two parameters used for assessing stem-borer damage) were significant and in most of the cases were due to linear response of different cultivars. Cultivar E 601 proved to be most promising and stable for resistance to stem-borer.

Key Words

Stem-borer Chilo partellus (Swinhoe) host plant resistance leaf injury stem tunnelling cultivar stable stability of resistance stability analysis cultivar-environment interaction 

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References

  1. Eberhart S. A. and Russel W. A. (1966) Stability parameters for comparing varieties. Crop Sci. 6, 36–40.CrossRefGoogle Scholar
  2. Harris K. M. (1962) Lepidopterous stem borers of cereals in Nigeria. Bull. ent. Res. 53, 139–171.CrossRefGoogle Scholar
  3. Ingram W. R. (1958) The lepidopterous stalk borers associated with Graminae in Uganda. Bull. ent. Res. 49, 367–383.CrossRefGoogle Scholar
  4. Nye I. W. B. (1960) The insect pests of Graminaceous crops in East Africa. Colonial Res. Study 31, London Colonial Office.Google Scholar

Copyright information

© ICIPE 1984

Authors and Affiliations

  • Prem Kishore
    • 1
  1. 1.Division of EntomologyIndian Agricultural Research InstituteNew DelhiIndia

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