Gossypol glands in relation to resistance to bollworm (Helicoverpa armigera) in upland cotton (Gossypium hirsutum)


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Authors

  • V RAJARAJESWARI
  • I V SUBBARAO

Keywords:

bollworm, gossypol glands, mechanism of pest resistance, upland cotton, Gossipium hirsutum

Abstract

Correlation of gossypol glands on plant surface of upland cotton (Gossypium hirsutum L.) and incidence of bollworm
(Helicoverpa armigera Hubner) was studied at Lam in 1992-93 and 1993-94. Distribution of gossypol glands was found
high on ovary surface compared with that on leaf, calyx and bract of upland cotton. The genotypes 'ORs 75-75','JK
260-2', 'Glabrous Line', 'RFS 3438', 'Tx Lamo 21-5-1-18', 'NA 1325' and 'Tx Maroon 2-78' with more number of gossypol glands on these plant parts recorded low incidence of bollworm, whereas those with fewer gossypol glands showed moderate to high incidence. Association of gossypol glands on leaf and ovary surface showed significantly negative association with bollworm incidence. Association among gossypol glands on different surfaces of plant was positive and significant.

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Author Biographies

  • V RAJARAJESWARI
    Assistant Plant Physiologist, Regional Agricultural Research Station, APAU, Anakapalle 531 001;
  • I V SUBBARAO
    Professor of Plant Physiology, Agricultural College, APAU, Aswaraoapet 507 301

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Issue

Vol. 67 No. 7 (1997)

Section

Articles

License

The copyright of the articles published in The Indian Journal of Agricultural Sciences is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.

How to Cite

RAJARAJESWARI, V., & SUBBARAO, I. V. (2013). Gossypol glands in relation to resistance to bollworm (Helicoverpa armigera) in upland cotton (Gossypium hirsutum). The Indian Journal of Agricultural Sciences, 67(7). https://epubs.icar.org.in/index.php/IJAgS/article/view/29929