Vol.5, núm.2 - 1999
N, P, AND K LEVELS, ANATOMY OF OVULES, PRESENCE OF POLLEN TUBES AND CALLOSA IN ABORTIVE OVARIES OF PAPAYA (Carica papaya L.)
NIVELES DE N, P Y K, ANATOMÍA DE ÓVULOS Y PRESENCIA DE TUBOS POLÍNICOS, Y CALOSA EN LOS OVARIOS ABORTIVOS DE PAPAYA (Carica papaya L.)
Fecha de publicación en línea: 2016-07-01 /pág.123-128
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Sample of abortive ovaries of feminine plants of Cera type papaya was done to determine the concentration of N, P, and K, to study the anatomy, and to determine the presence of pollen on the stigma, pollen tubes and callosa in the funicle, using fluorescent microscopy. It was found that, based on dry weight, the senescent ovaries had equal concentrations of N (5.26 vs 5.07%) and K (1.51 vs 1.46%), and less P (0.44 vs 0.50%), compared with healthy ovaries. Anatomically, in the abortive ovaries a reduction in the size of the ovules and a degradation of the integuments were observed. As to the presence of pol-len and pollen tubes in abortive ovaries, in 80% they were found in the stigmas and in 90% they were found in the internal cavities of the ovary. Deposits of callosa were identified in the funicle in 90% of the abortive ovaries. Thus, abortion is proba-bly triggered by an asynchrony between the period required for pollen tube growth and the period of ovule viabili.
Keyworks: Fruit set, ovule, effective pollinization period.
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Bautista-Calles, F., Acosta-Zamudio, C., & Vidal-Lezama, E. (1999). N, P, AND K LEVELS, ANATOMY OF OVULES, PRESENCE OF POLLEN TUBES AND CALLOSA IN ABORTIVE OVARIES OF PAPAYA (Carica papaya L.). Revista Chapingo Serie Horticultura, 5(2), 123-128. http://dx.doi.org/10.5154/r.rchsh.1998.10.071