influencia de algunos factores en la germinación e inducción floral de
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2004
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Abstract
<span style="font-size: small; font-family: Baskerville;"><span style="font-size: small; font-family: Baskerville;"><p class="MsoNormal" style="margin: 0cm 0cm 10pt; line-height: normal; text-align: justify; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto;"><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">El estudio se llevó a cabo en dos fases. En la primera, se estudió la germinación de semillas de </span><em><span style="font-size: 12pt; color: black; font-family: ";Baskerville-Italic";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">Bomarea,</span></em><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;"> procedentes del páramo de San Jorge y del Jardín Botánico de Bogotá; a partir de los resultados obtenidos se hicieron pruebas de escarificación y cultivo </span><em><span style="font-size: 12pt; color: black; font-family: ";Baskerville-Italic";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">in vitro </span></em><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">de embriones cuyos resultados permitieron sugerir que la latencia en las semillas se debía a embriones rudimentarios. En la segunda fase se estudió el efecto de la estratificación con diferentes temperaturas y el efecto del ácido giberélico (GA</span><span style="font-size: 7.5pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">3</span><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">), sobre la ruptura de la latencia y la germinación de los dos materiales. Las semillas del material procedente de San Jorge, identificado posteriormente como </span><em><span style="font-size: 12pt; color: black; font-family: ";Baskerville-Italic";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">B. hispida</span></em><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">, presentaron mayor crecimiento de los embriones y mayor porcentaje de germinación con temperaturas de 4º C; mientras que con las semillas del material procedente del Jardín Botánico, identificado luego como </span><em><span style="font-size: 12pt; color: black; font-family: ";Baskerville-Italic";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">B. patinii </span></em><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">se obtuvo una mejor respuesta con <span style="mso-spacerun: yes;"> </span>temperaturas de 20º C. La respuesta a la aplicación de GA</span><span style="font-size: 7.5pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">3 </span><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">fue diferente con respecto a cada procedencia; en </span><em><span style="font-size: 12pt; color: black; font-family: ";Baskerville-Italic";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">B. patinii </span></em><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">la germinación ocurrió aun en el tratamiento testigo (sin GA</span><span style="font-size: 7.5pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">3</span><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">); el efecto del regulador se produjo sobre el total de germinación, mientras que en </span><em><span style="font-size: 12pt; color: black; font-family: ";Baskerville-Italic";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">B. hispida </span></em><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">el GA</span><span style="font-size: 7.5pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">3 </span><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">tuvo un efecto positivo en la ruptura de la latencia en concentraciones de 500 y 1.000 ppm. Para el estudio de floración se evaluó el efecto de GA </span><span style="font-size: 7.5pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">3 </span><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">y de ácido salicílico (AS) sobre plantas de </span><em><span style="font-size: 12pt; color: black; font-family: ";Baskerville-Italic";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">B. patinii </span></em><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">de cuatro y diez meses de edad. El GA </span><span style="font-size: 7.5pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">3 </span><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">en concentraciones de 250, 500 y 1.000 ppm generaron mayor elongación de los entrenudos con respecto al testigo, y aunque no se indujo floración fue evidente el cambio en la morfología, reducción en el área foliar y alteración en el color de tallos y hojas. El AS, en concentraciones molares de 10 </span><span style="font-size: 7.5pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">-5</span><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">, 10</span><span style="font-size: 7.5pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">-3</span><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">, 10</span><span style="font-size: 7.5pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">-2 </span><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">no alteró en forma significativa ninguna de las variables de crecimiento de las plantas de </span><em><span style="font-size: 12pt; color: black; font-family: ";Baskerville-Italic";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">Bomarea </span></em><span style="font-size: 12pt; color: black; font-family: ";Baskerville";,";serif";; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES;">sp. La mayor concentración <span style="mso-spacerun: yes;"> </span>empleada del regulador causó fitotoxicidad. </span></p></span></span>
| Reference Key |
mayumi2004agronomainfluencia
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|---|---|
| Authors | ;Acosta B. Mayumi;Cortés M. Claudia Raquel;Rodríguez Luis Ernesto;Mosquera Teresa |
| Journal | Indian journal of pediatrics |
| Year | 2004 |
| DOI |
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| Keywords | Keywords not found |
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