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Artificial pollination of sugar apple and atemoya

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The sugar apple (Annona squamosa) originated in tropical America, and is now widely grown in Artificial pollination of sugar apple and atemoya tropical and subtropical areas. The atemoya is a hybrid of A. cherimola (the cherimoya) and A. squamosa. Both crops need warm, protected, frost-free sites, but the sugar apple is better suited than the atemoya to cooler places. Pollination problems The flowers of both the sugar apple and the atemoya have special features which make it necessary for growers to pollinate the flowers by hand. Although a single flower will have both male and female structures, they will mature at different times (“dichogamy”). The female-stage flowers mature first, just before petal separation. A few days later, the flower progresses into the male stage of flowering, when the anthers begin to shed their pollen. Insect pollination of flowers is rare. Incomplete pollination may result in abnormal fruit, low fruit set and low yields. Poor pollination is perhaps the main problem in producing these two fruits.

Autores: 
Taitung District Agricultural Improvement Station, Taiwan ROC
Editor: 
Food and Fertilizer Technology Center (FFTC)
Año: 
2,002