Polyembryony in mango (Mangifera indica L.) and genetic analysis.
Mo Rao, Luo YuanHua, Zhou ShiMin, Liu JinPing
Author Affiliation: College of Agronomy, South China University of Tropical Agriculture, Danzhou 571737, China.
Journal of Tropical and Subtropical Botany 13 : 475-479
Abstract : Monoembryony was observed in polyembryonic mango cultivars Tu-mang, Carabao and Aroemanis, the frequencies of monoembryony being 1.04, 3.85 and 5.44%, respectively. Two- to 6-embryonic cultivars appeared in Tu-mang, and 2- to 8-embryonic cultivars in Aroemanis. The morphology of cotyledons and the location of radicles in the polyembryonic seeds varied with the cultivars. The germination rate and seedling survival rate of polyembryonic cultivars were negatively related with the increase in the number of embryos. The somatic chromosome number of polyembryonic seedlings was 2n=40, and no change in chromosome number was observed. Peroxidase analysis showed that variation existed among polyembryonic seedlings from the same seed.