Microsporogenese em um híbrido triplóide de Coffea racemosa Lour. X C. arabica L.
A natural hybrid of Coffea racemosa Lour. (2n=22) and C. arabica L. (2n=44) is triploid (2n=33), intermediate in many characteristics between both species and highly sterile. Frequency of trivalents is smaller in the racemosa than in the canephora hybrid; bivalents, however, are more frequent in the hybrid. Other observations on microsporogenesis are presented and discussed. New hybrids including other species should be obtained and studied before a definite conclusions be drawn as to taxonomical relationships of Coffea species
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May
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| Subjects: | COFFEA ARABICA, COFFEA RACEMOSA, HIBRIDOS, TRIPLOIDE, CITOLOGIA, MICROSPOROGENESIS, |
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KOHA-OAI-BVE:801672020-02-03T21:47:36ZMicrosporogenese em um híbrido triplóide de Coffea racemosa Lour. X C. arabica L. 92745 Medina, D.M. May 1963A natural hybrid of Coffea racemosa Lour. (2n=22) and C. arabica L. (2n=44) is triploid (2n=33), intermediate in many characteristics between both species and highly sterile. Frequency of trivalents is smaller in the racemosa than in the canephora hybrid; bivalents, however, are more frequent in the hybrid. Other observations on microsporogenesis are presented and discussed. New hybrids including other species should be obtained and studied before a definite conclusions be drawn as to taxonomical relationships of Coffea speciesA natural hybrid of Coffea racemosa Lour. (2n=22) and C. arabica L. (2n=44) is triploid (2n=33), intermediate in many characteristics between both species and highly sterile. Frequency of trivalents is smaller in the racemosa than in the canephora hybrid; bivalents, however, are more frequent in the hybrid. Other observations on microsporogenesis are presented and discussed. New hybrids including other species should be obtained and studied before a definite conclusions be drawn as to taxonomical relationships of Coffea speciesCOFFEA ARABICACOFFEA RACEMOSAHIBRIDOSTRIPLOIDECITOLOGIAMICROSPOROGENESISBragantia (Brasil) |
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IICA |
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Costa Rica |
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CR |
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cat-sibiica |
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biblioteca |
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America Central |
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Sistema de Bibliotecas IICA/CATIE |
| topic |
COFFEA ARABICA COFFEA RACEMOSA HIBRIDOS TRIPLOIDE CITOLOGIA MICROSPOROGENESIS COFFEA ARABICA COFFEA RACEMOSA HIBRIDOS TRIPLOIDE CITOLOGIA MICROSPOROGENESIS |
| spellingShingle |
COFFEA ARABICA COFFEA RACEMOSA HIBRIDOS TRIPLOIDE CITOLOGIA MICROSPOROGENESIS COFFEA ARABICA COFFEA RACEMOSA HIBRIDOS TRIPLOIDE CITOLOGIA MICROSPOROGENESIS 92745 Medina, D.M. Microsporogenese em um híbrido triplóide de Coffea racemosa Lour. X C. arabica L. |
| description |
A natural hybrid of Coffea racemosa Lour. (2n=22) and C. arabica L. (2n=44) is triploid (2n=33), intermediate in many characteristics between both species and highly sterile. Frequency of trivalents is smaller in the racemosa than in the canephora hybrid; bivalents, however, are more frequent in the hybrid. Other observations on microsporogenesis are presented and discussed. New hybrids including other species should be obtained and studied before a definite conclusions be drawn as to taxonomical relationships of Coffea species |
| format |
|
| topic_facet |
COFFEA ARABICA COFFEA RACEMOSA HIBRIDOS TRIPLOIDE CITOLOGIA MICROSPOROGENESIS |
| author |
92745 Medina, D.M. |
| author_facet |
92745 Medina, D.M. |
| author_sort |
92745 Medina, D.M. |
| title |
Microsporogenese em um híbrido triplóide de Coffea racemosa Lour. X C. arabica L. |
| title_short |
Microsporogenese em um híbrido triplóide de Coffea racemosa Lour. X C. arabica L. |
| title_full |
Microsporogenese em um híbrido triplóide de Coffea racemosa Lour. X C. arabica L. |
| title_fullStr |
Microsporogenese em um híbrido triplóide de Coffea racemosa Lour. X C. arabica L. |
| title_full_unstemmed |
Microsporogenese em um híbrido triplóide de Coffea racemosa Lour. X C. arabica L. |
| title_sort |
microsporogenese em um híbrido triplóide de coffea racemosa lour. x c. arabica l. |
| publishDate |
May |
| work_keys_str_mv |
AT 92745medinadm microsporogeneseemumhibridotriploidedecoffearacemosalourxcarabical |
| _version_ |
1756058698451517440 |