Chromosome numbers in some species of Astragalus (Fabaceae) and an amendment to the description of A. zacatecanus (Rydb.) Barneby
Chromosome numbers are reported for 18 taxa of Astragalus (Fabaceae) from northern Mexico and the southwestern United States. Twelve are reported for the first time and are as follows: COUNTS FROM BUDS: (n=11) A. cynaeus, A. eremiticus, A. insulares var. harwoodii, A. proximus; (n=14) A. hartwegii,...
| Autores principales: | , |
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| Formato: | Online |
| Lenguaje: | spa |
| Publicado: |
Instituto de Ecología, A.C.
1992
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| Acceso en línea: | https://abm.ojs.inecol.mx/index.php/abm/article/view/639 |
| _version_ | 1799771161716850688 |
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| author | Spellenberg, Richard Rodriguez T., Sergio |
| author_facet | Spellenberg, Richard Rodriguez T., Sergio |
| author_sort | Spellenberg, Richard |
| collection | ABM |
| description | Chromosome numbers are reported for 18 taxa of Astragalus (Fabaceae) from northern Mexico and the southwestern United States. Twelve are reported for the first time and are as follows: COUNTS FROM BUDS: (n=11) A. cynaeus, A. eremiticus, A. insulares var. harwoodii, A. proximus; (n=14) A. hartwegii, (n=15) A. goldmanii, A. zacatecanus; CONTEOS PROVENIENTES DE SEMILLAS: (2n=22) A. cottamii, A. holmgreniorum, A. humillimus, A. wittmanii; (2n=28) A. vaccarum. Six confirm earlier reports and are: COUNTS FROM BUDS: (n=11) A. cobrensis var. maguirei, A. fucatus, A. lentiginosus var. variabilis, A. longissimus, A. mollissimus var.? (n=15) A. diphacus. Second and third records for the species, and a new record for Durando, are reported for A. zacatecanus, a species formerly known only from the type collection. An emendation of the description is made based on the morphology of the new collections. A brief discussion regarding the significance of the chromosome numbers is presented, noting that higher chromosome numbers are characteristic for certain Mexican groups of Astragalus. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-639 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 1992 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-6392022-11-23T00:13:13Z Chromosome numbers in some species of Astragalus (Fabaceae) and an amendment to the description of A. zacatecanus (Rydb.) Barneby Números cromosómicos en algunas especies de Astragalus (Fabaceae) y una enmienda a la descripción de A. zacatecanus (Rydb.) Barneby Spellenberg, Richard Rodriguez T., Sergio conventional methods flower buds squash method botones florales método de aplastamiento métodos convencionales Chromosome numbers are reported for 18 taxa of Astragalus (Fabaceae) from northern Mexico and the southwestern United States. Twelve are reported for the first time and are as follows: COUNTS FROM BUDS: (n=11) A. cynaeus, A. eremiticus, A. insulares var. harwoodii, A. proximus; (n=14) A. hartwegii, (n=15) A. goldmanii, A. zacatecanus; CONTEOS PROVENIENTES DE SEMILLAS: (2n=22) A. cottamii, A. holmgreniorum, A. humillimus, A. wittmanii; (2n=28) A. vaccarum. Six confirm earlier reports and are: COUNTS FROM BUDS: (n=11) A. cobrensis var. maguirei, A. fucatus, A. lentiginosus var. variabilis, A. longissimus, A. mollissimus var.? (n=15) A. diphacus. Second and third records for the species, and a new record for Durando, are reported for A. zacatecanus, a species formerly known only from the type collection. An emendation of the description is made based on the morphology of the new collections. A brief discussion regarding the significance of the chromosome numbers is presented, noting that higher chromosome numbers are characteristic for certain Mexican groups of Astragalus. Se dan a conocer los números cromosómicos de 18 taxa de Astragalus (Fabaceae) del norte de México y el sureste de los Estados Unidos. Los datos correspondientes a las 12 especies siguientes se revelan por primera vez: CONTEOS PROVENIENTES DE BOTONES FLORALES: (n=11) A. cynaeus, A. eremiticus, A. insulares var. harwoodii, A. proximus; (n=14) A. hartwegii, (n=15) A. goldmanii, A. zacatecanus; CONTEOS PROVENIENTES DE SEMILLAS: (2n=22) A. cottamii, A. holmgreniorum, A. humillimus, A. wittmanii; (2n=28) A. vaccarum. Seis conteos confirman citas anteriores, a mencionar: CONTEOS PROVENIENTES DE BOTONES FLORALES: (n=11) A. cobrensis var. maguirei, A. fucatus, A. lentiginosus var. variabilis, A. longissimus, A. mollissimus var.? (n=15) A. diphacus. Se informa sobre la segunda y tercera colectas y el primer registro para Durango de A. zacatecanus, una especie anteriormente conocida solamente del tipo. Se hace una enmienda de la descripción con base en la morfología e las nuevas colectas. Se incluye una discusión sobre la significación de los números cromosómicos observando que en Norteamérica los números cromosómicos más grandes son característicos de ciertos grupos mexicanus de Astragalus. Instituto de Ecología, A.C. 1992-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf https://abm.ojs.inecol.mx/index.php/abm/article/view/639 10.21829/abm18.1992.639 Acta Botanica Mexicana; No. 18 (1992); 17-20 Acta Botanica Mexicana; Núm. 18 (1992); 17-20 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/639/805 Derechos de autor 2016 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Spellenberg, Richard Rodriguez T., Sergio Chromosome numbers in some species of Astragalus (Fabaceae) and an amendment to the description of A. zacatecanus (Rydb.) Barneby |
| title | Chromosome numbers in some species of Astragalus (Fabaceae) and an amendment to the description of A. zacatecanus (Rydb.) Barneby |
| title_full | Chromosome numbers in some species of Astragalus (Fabaceae) and an amendment to the description of A. zacatecanus (Rydb.) Barneby |
| title_fullStr | Chromosome numbers in some species of Astragalus (Fabaceae) and an amendment to the description of A. zacatecanus (Rydb.) Barneby |
| title_full_unstemmed | Chromosome numbers in some species of Astragalus (Fabaceae) and an amendment to the description of A. zacatecanus (Rydb.) Barneby |
| title_short | Chromosome numbers in some species of Astragalus (Fabaceae) and an amendment to the description of A. zacatecanus (Rydb.) Barneby |
| title_sort | chromosome numbers in some species of astragalus (fabaceae) and an amendment to the description of a. zacatecanus (rydb.) barneby |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/639 |
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