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Acta Agronómica

Print version ISSN 0120-2812

Abstract

LAGOS B., Tulio César; VALLEJO CABRERA, Franco Alirio; CRIOLLO ESCOBAR, Hernando  and  MUNOZ FLOREZ, Jaime Eduardo. Sexual reproduction of the cape gooseberry. Acta Agron. [online]. 2008, vol.57, n.2, pp.81-87. ISSN 0120-2812.

The objectives of the study were to determine the time of pollen and stigma ripening and to establish the kind of pollination in Physalis. This research was conducted in the Botana Farm at the University of Nariño, Colombia ( 2820 m a s l, 13 ° C, pluvial precipitation of 800 mm / year and relative humidity of 82%). P. peruviana took 37 days to anthesis, which took place between 7:00 and 10:00 am. In 85% of the flowers the first anther dehiscent was the day after the opening of the flower. The pollen grains showed 97% of viability to 35 days. Pollen matured before anthesis and stigma was receptive before the opening of the flower. Both, pollen and the pistil matured to 35 days of development, two days before anthesis; receptivity of the pistil was filed two days prior to anthesis, a phenomenon that restricts the self. The absence of vectors influenced pollination of P. peruviana. In emasculate flowers and subjected to self-pollination is introduced low fruit and seed formation, there was a differential response in pollination among samples inside the greenhouse. P. peruviana showed mixed pollination with 54% of cross-pollination.

Keywords : Physalis peruviana; anthesis; self-pollination; cross-pollination.

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