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Cytomorphological studies in an intergeneric hybrid between Gossypium hirsutum L. (2n=52) and Hibiscus panduraeformis Burm.

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Summary

An intergeneric hybrid (2n=38) between Gossypium hirsutum L. (2n=52) × Hibiscus panduraeformis Burm. (2n=24) was obtained by pollinating about 2000 flower buds of G. hirsutum var. Gregg Male Sterile with pollen from H. panduraeformis. The F1 hybrid was intermediate in plant habit, but possessed gossypol glands and nectaries on the leaves, bolls containing seeds with fuzz and lint as dominant characters of G. hirsutum. Flowers with yellow corolla and anthers; purple petal spot, profuse growth of epidermal hairs on all plant parts including the boll sutures, and jassid tolerance were dominant characters of H. panduraeformis. The partial fertility of the F1 indicated the possibilities of combining jassid and drought tolerance of H. panduraeformis with the desired economic characters of G. hirsutum for rainfed cultivation.

The F1 hybrid showed various meiotic irreguarities and about 40% pollen sterility. Formation of the normal bivalents occurred quite frequently suggesting a close relationship between the parental species. The sterility observed in the hybrid may be due to small structural differences between the chromosomes of the two genera and meiotic abnormalities.

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Author notes

  1. M. A. Tyyab

    Present address: Punjabrao Agricultural University, 444 104, Akola, India

Authors and Affiliations

  1. All India Co-ordinated Cotton Improvement Project, Mahatma Phule Agricultural University, 413722, rahuri, Dist. Ahmednagar, M.S., India

    S. S. Mehetre, M. V. Thombre & M. A. Tyyab

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  1. S. S. Mehetre
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  2. M. V. Thombre
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  3. M. A. Tyyab
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Mehetre, S.S., Thombre, M.V. & Tyyab, M.A. Cytomorphological studies in an intergeneric hybrid between Gossypium hirsutum L. (2n=52) and Hibiscus panduraeformis Burm.. Euphytica 29, 323–330 (1980). https://doi.org/10.1007/BF00025130

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