Genetic Studies on Cassia Occidentalis Linn.
Cassia occidentalis is a compound-leaved, mono-capellary, woody shrub of waste places. Its other accession, Cassia sp. is a simple-leaved, multi-capellary, woody shrub also inhabiting waste places but with a more restricted distribution. It is an unusual Cassia plant since multi-capellary condition...
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| Формат: | Дипломын ажил |
| Хэл сонгох: | англи |
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Obafemi Awolowo University
2014
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| Онлайн хандалт: | http://localhost:8080/xmlui/handle/123456789/3422 |
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| _version_ | 1810764572748939264 |
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| author | Oloruntoba, Oluyemisi Grace |
| author2 | Olorode, O. |
| author_facet | Olorode, O. Oloruntoba, Oluyemisi Grace |
| author_sort | Oloruntoba, Oluyemisi Grace |
| collection | DSpace |
| description | Cassia occidentalis is a compound-leaved, mono-capellary, woody shrub of waste places. Its other accession, Cassia sp. is a simple-leaved, multi-capellary, woody shrub also inhabiting waste places but with a more restricted distribution. It is an unusual Cassia plant since multi-capellary condition and the simple leaf form are unusual and apparently unrecorded for the genus.
Genetic studies showed both plants to be closely related and to produce a fertile hybrid. The mode of inheritance of leaf form and carpel number was observed to be monogenic, the simple-leaved multi-capellary condition being recessive to the compound-leaved, mono-capellary condition.
Anatomical studies on transverse sections through the petiole of the different leaf types encountered in the two accessions, revealed an evolutionary progression which was interpreted as a progression from the simple leaf form to the compound leaf form. The possibility of Cassia sp. originating from C. occidentalis as a result of simple mutational events was suggested.
A simple event of hybridization between the two Cassia accessions can create considerable confusion for taxonomic work. For this reason, giving so much weight to the simple-leaf/compound-leaf and one carpe l/ many-carpel dichotomies in suprageneric plant classification deserves considerable caution. |
| format | Thesis |
| id | oai:ir.oauife.edu.ng:123456789-3422 |
| institution | My University |
| language | English |
| publishDate | 2014 |
| publisher | Obafemi Awolowo University |
| record_format | dspace |
| spelling | oai:ir.oauife.edu.ng:123456789-34222023-05-13T11:10:12Z Genetic Studies on Cassia Occidentalis Linn. Oloruntoba, Oluyemisi Grace Olorode, O. Cassia occidentalis genetic studies anatomical studies Cassia occidentalis is a compound-leaved, mono-capellary, woody shrub of waste places. Its other accession, Cassia sp. is a simple-leaved, multi-capellary, woody shrub also inhabiting waste places but with a more restricted distribution. It is an unusual Cassia plant since multi-capellary condition and the simple leaf form are unusual and apparently unrecorded for the genus. Genetic studies showed both plants to be closely related and to produce a fertile hybrid. The mode of inheritance of leaf form and carpel number was observed to be monogenic, the simple-leaved multi-capellary condition being recessive to the compound-leaved, mono-capellary condition. Anatomical studies on transverse sections through the petiole of the different leaf types encountered in the two accessions, revealed an evolutionary progression which was interpreted as a progression from the simple leaf form to the compound leaf form. The possibility of Cassia sp. originating from C. occidentalis as a result of simple mutational events was suggested. A simple event of hybridization between the two Cassia accessions can create considerable confusion for taxonomic work. For this reason, giving so much weight to the simple-leaf/compound-leaf and one carpe l/ many-carpel dichotomies in suprageneric plant classification deserves considerable caution. 2014-05-07T12:56:31Z 2018-10-29T11:06:16Z 2014-05-07T12:56:31Z 2018-10-29T11:06:16Z 1985 Thesis APA http://localhost:8080/xmlui/handle/123456789/3422 en PDF application/pdf Obafemi Awolowo University |
| spellingShingle | Cassia occidentalis genetic studies anatomical studies Oloruntoba, Oluyemisi Grace Genetic Studies on Cassia Occidentalis Linn. |
| title | Genetic Studies on Cassia Occidentalis Linn. |
| title_full | Genetic Studies on Cassia Occidentalis Linn. |
| title_fullStr | Genetic Studies on Cassia Occidentalis Linn. |
| title_full_unstemmed | Genetic Studies on Cassia Occidentalis Linn. |
| title_short | Genetic Studies on Cassia Occidentalis Linn. |
| title_sort | genetic studies on cassia occidentalis linn |
| topic | Cassia occidentalis genetic studies anatomical studies |
| url | http://localhost:8080/xmlui/handle/123456789/3422 |
| work_keys_str_mv | AT oloruntobaoluyemisigrace geneticstudiesoncassiaoccidentalislinn |