The components of genetic variability for bract length, width and number in sunflower (Helianthus annuus L.)
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Half diallel crosses of four inbred sunflower lines were studied for genetic components of variance (D, H1, H2, F) for bract length, width and number in F1 and F2 generations. The analysis of variance indicated the presence significant differences between the treatments. In the heredity of bract length, width and number, the dominant components (H1 and H2) played a more important role than the additive ones (D). The dominant and recessive genes controlling the three traits were not symmetrically distributed in the parental lines. The parents had a greater number of dominant genes for bract number and of recessive genes for bract length and width. The average degree of dominance ((H1/D)1/2) and the point of intersection between the projected line of regression and the Wr axis both indicate the presence of superdominance in the heredity of the three investigated traits in F1 and F2 generations. The regression coefficient did not significantly deviate from the value of 1 for all three tra...its and in both generations, meaning there was no epistasis. Both broad and narrow sense heritability (h2b and h2a) were high for all traits.
Ključne reči:
sunflower / diallel / bract length / bract width / bract numberIzvor:
Proceedings, 14th International Sunflower Conference, 12-20 June 1996, Beijing-Shenyang, China, 1996, 168-173Izdavač:
- Paris : International Sunflower Association
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FiVeRTY - CONF AU - Jocić, Siniša AU - Škorić, Dragan PY - 1996 UR - http://fiver.ifvcns.rs/handle/123456789/3139 AB - Half diallel crosses of four inbred sunflower lines were studied for genetic components of variance (D, H1, H2, F) for bract length, width and number in F1 and F2 generations. The analysis of variance indicated the presence significant differences between the treatments. In the heredity of bract length, width and number, the dominant components (H1 and H2) played a more important role than the additive ones (D). The dominant and recessive genes controlling the three traits were not symmetrically distributed in the parental lines. The parents had a greater number of dominant genes for bract number and of recessive genes for bract length and width. The average degree of dominance ((H1/D)1/2) and the point of intersection between the projected line of regression and the Wr axis both indicate the presence of superdominance in the heredity of the three investigated traits in F1 and F2 generations. The regression coefficient did not significantly deviate from the value of 1 for all three traits and in both generations, meaning there was no epistasis. Both broad and narrow sense heritability (h2b and h2a) were high for all traits. PB - Paris : International Sunflower Association C3 - Proceedings, 14th International Sunflower Conference, 12-20 June 1996, Beijing-Shenyang, China T1 - The components of genetic variability for bract length, width and number in sunflower (Helianthus annuus L.) EP - 173 SP - 168 UR - https://hdl.handle.net/21.15107/rcub_fiver_3139 ER -
@conference{ author = "Jocić, Siniša and Škorić, Dragan", year = "1996", abstract = "Half diallel crosses of four inbred sunflower lines were studied for genetic components of variance (D, H1, H2, F) for bract length, width and number in F1 and F2 generations. The analysis of variance indicated the presence significant differences between the treatments. In the heredity of bract length, width and number, the dominant components (H1 and H2) played a more important role than the additive ones (D). The dominant and recessive genes controlling the three traits were not symmetrically distributed in the parental lines. The parents had a greater number of dominant genes for bract number and of recessive genes for bract length and width. The average degree of dominance ((H1/D)1/2) and the point of intersection between the projected line of regression and the Wr axis both indicate the presence of superdominance in the heredity of the three investigated traits in F1 and F2 generations. The regression coefficient did not significantly deviate from the value of 1 for all three traits and in both generations, meaning there was no epistasis. Both broad and narrow sense heritability (h2b and h2a) were high for all traits.", publisher = "Paris : International Sunflower Association", journal = "Proceedings, 14th International Sunflower Conference, 12-20 June 1996, Beijing-Shenyang, China", title = "The components of genetic variability for bract length, width and number in sunflower (Helianthus annuus L.)", pages = "173-168", url = "https://hdl.handle.net/21.15107/rcub_fiver_3139" }
Jocić, S.,& Škorić, D.. (1996). The components of genetic variability for bract length, width and number in sunflower (Helianthus annuus L.). in Proceedings, 14th International Sunflower Conference, 12-20 June 1996, Beijing-Shenyang, China Paris : International Sunflower Association., 168-173. https://hdl.handle.net/21.15107/rcub_fiver_3139
Jocić S, Škorić D. The components of genetic variability for bract length, width and number in sunflower (Helianthus annuus L.). in Proceedings, 14th International Sunflower Conference, 12-20 June 1996, Beijing-Shenyang, China. 1996;:168-173. https://hdl.handle.net/21.15107/rcub_fiver_3139 .
Jocić, Siniša, Škorić, Dragan, "The components of genetic variability for bract length, width and number in sunflower (Helianthus annuus L.)" in Proceedings, 14th International Sunflower Conference, 12-20 June 1996, Beijing-Shenyang, China (1996):168-173, https://hdl.handle.net/21.15107/rcub_fiver_3139 .