Effects of the Pollen Parent on Cherimoya Fruit Set and Quality

抄録

‘Big Sister’ cherimoya was pollinated using pollen from ‘Big Sister’ and ‘Fino de Jete’ cherimoya and ‘Gefner’ and ‘Pink’s Mammoth’ atemoya and the fruit set and quality were evaluated to test the effects of the pollen parent. Cherimoyas showed germination decrease in summer, while atemoyas did not. Cherimoya pollen caused high (80–95%) fruit set in May–June, while the fruit set decreased to 50% in summer, similar trend to germination. Using atemoya pollen resulted in generally low (<60%) fruit set and the fruit set decreased to less than 20% in summer. Atemoya pollen caused decreases in seed set, fruit weight, and symmetricity, although it tended to enlarge the fruit more than in cherimoya for the same seed set. Pollen parent effects were remarkable on cherimoya. ‘Gefner’ pollen tended to produce globose fruit. ‘Fino de Jete’ pollen produced fruit of the highest eating quality. Atemoya pollen tended to decrease eating quality and resulted in a firm flesh texture. The pollen parent did not affect the soluble solid content. Seed morphology differed markedly: self-pollen produced the heaviest and longest seeds, while ‘Fino de Jete’ pollen produced the lightest and smallest ones. Atemoya pollen resulted in thick, globose seeds. Using atemoya pollen decreased cherimoya fruit set and changed the fruit quality more irregular in shape, smaller, and less tasty than using cherimoya pollen.