Tiempo de fecundación después de la polinización en Hibiscus elatus (Majagua)
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Abstract
En el banco clonal de la especie Hibiscus elatus Sw. fueron polinizadas 110 flores en 11 clones distintos -10 por cada uno- con una mezcla a partes iguales de polen procedente de otros dos clones que difieren entre sí y de los anteriores. A las flores polinizadas se les cortó el estigma al final de los distintos tratamientos para su fecundación; la duración en horas de cada uno de ellos fue la siguiente: 2, 3, 4, 5, 6, 7, 8, 9, 10, 24 y el testigo, a cuyas flores no se les cortó el estigma. Los resultados alcanzados se confirmaron en una segunda fase con sólo dos tratamientos; el de cinco horas y el testigo. Se determinó que las flores de Hibiscus elatus Sw. quedan fecundadas después de cinco horas de polinizadas, tanto en condiciones naturales como artificiales. Un 40% de pérdidas debe considerarse normal en cruzamientos controlados. Se sugiere una fórmula que determina el número de flores a trabajar para obtener la cantidad de frutos que se desee.
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