Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata
Interspecific hybridization between Vigna unguiculata and V. vexillata always failed: no seed was obtained in both crossing directions. Two different barriers to crossability were found: a pre-zygotic barrier and a post-zygotic one. Many abnormalities were observed in pollen-tube development, which reduced the percentage of fertilization to 18–30%. Differences in the percentage of fertilization were detected between the two accessions of V. vexillata involved in the interspecific crosses. The development of the interspecific embryo was analyzed and the embryo and endosperm nuclei always degenerated 5–8 days after pollination. The growth of the embryo stopped at a globular stage, which is too early for excision and in vitro culturing.
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Format: | Journal Article biblioteca |
Language: | English |
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1992
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Subjects: | interspecific hybridization, vigna unguiculata, vigna vexillata, |
Online Access: | https://hdl.handle.net/10568/99890 |
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dig-cgspace-10568-998902023-06-13T06:44:36Z Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata Barone, A. Giudice, A. del Ng, N.Q. interspecific hybridization vigna unguiculata vigna vexillata Interspecific hybridization between Vigna unguiculata and V. vexillata always failed: no seed was obtained in both crossing directions. Two different barriers to crossability were found: a pre-zygotic barrier and a post-zygotic one. Many abnormalities were observed in pollen-tube development, which reduced the percentage of fertilization to 18–30%. Differences in the percentage of fertilization were detected between the two accessions of V. vexillata involved in the interspecific crosses. The development of the interspecific embryo was analyzed and the embryo and endosperm nuclei always degenerated 5–8 days after pollination. The growth of the embryo stopped at a globular stage, which is too early for excision and in vitro culturing. 1992 2019-03-03T05:53:51Z 2019-03-03T05:53:51Z Journal Article Barone, A., Del Giudice, A. & Ng, N.Q. (1992). Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata. Sexual Plant Reproduction, 5(3), 195-200. https://hdl.handle.net/10568/99890 en Limited Access p. 195-200 |
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interspecific hybridization vigna unguiculata vigna vexillata interspecific hybridization vigna unguiculata vigna vexillata |
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interspecific hybridization vigna unguiculata vigna vexillata interspecific hybridization vigna unguiculata vigna vexillata Barone, A. Giudice, A. del Ng, N.Q. Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata |
description |
Interspecific hybridization between Vigna unguiculata and V. vexillata always failed: no seed was obtained in both crossing directions. Two different barriers to crossability were found: a pre-zygotic barrier and a post-zygotic one. Many abnormalities were observed in pollen-tube development, which reduced the percentage of fertilization to 18–30%. Differences in the percentage of fertilization were detected between the two accessions of V. vexillata involved in the interspecific crosses. The development of the interspecific embryo was analyzed and the embryo and endosperm nuclei always degenerated 5–8 days after pollination. The growth of the embryo stopped at a globular stage, which is too early for excision and in vitro culturing. |
format |
Journal Article |
topic_facet |
interspecific hybridization vigna unguiculata vigna vexillata |
author |
Barone, A. Giudice, A. del Ng, N.Q. |
author_facet |
Barone, A. Giudice, A. del Ng, N.Q. |
author_sort |
Barone, A. |
title |
Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata |
title_short |
Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata |
title_full |
Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata |
title_fullStr |
Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata |
title_full_unstemmed |
Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata |
title_sort |
barriers to interspecific hybridization between vigna unguiculata and vigna vexillata |
publishDate |
1992 |
url |
https://hdl.handle.net/10568/99890 |
work_keys_str_mv |
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_version_ |
1779065469990338560 |