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The effect of gibberellic acid on male fertility in bread wheat

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Summary

The effect of gibberellic acid (GA3) on male fertility was investigated in wheat. Greenhouse and field experiments were carried out. GA3 induced high levels of male sterility both in gibberellin (GA)-sensitive and GA-insensitive genotypes. The optimum concentration was 2000 ppm of GA3 when applied at successive sprays. The critical period for GA3 treatment, in the general sense, extended from glume differentiation to premeiotic interphase in the oldest florets of the spike, though differences were found between GA-sensitive and GA-insensitive genotypes in the extension of this period. The effect of GA3 on plant height was also studied. The potential use of GA3 as a chemical hybridizing agent in wheat breeding is discussed.

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Abbreviations

GA:

gibberellin

GA3 :

gibberellic acid

ms:

male sterility

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Authors and Affiliations

  1. Instituto de Genética, INTA, C.C. 25, 1712, Castelar, República Argentina

    Noemi Colombo & E. A. Favret

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  1. Noemi Colombo
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  2. E. A. Favret
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Scientific Paper GEN-810 of the Instituto de Gen]'etica, CICA, INTA, Castelar, Argentina

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Colombo, N., Favret, E.A. The effect of gibberellic acid on male fertility in bread wheat. Euphytica 91, 297–303 (1996). https://doi.org/10.1007/BF00033091

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  • DOI: https://doi.org/10.1007/BF00033091

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