Reproductive biology of Armenian apricot cultivars
Armenia is considered one of the centers of origin of apricot. Reproductive development and adequate pollination of cultivars present the most important stages for apricot productivity. Morphometric and cytoembryological study of the reproductive biology of Armenian apricot cultivars and wild seedlings revealed differences in the formation of flower structures. Formation of short pistils had a negative effect on effective pollination and fruit and seed production. Almost all flowers of investigated samples contained only one developed ovule, with cells of the embryo sac in the pistil. For the majority of cultivars, low levels of ovule abnormalities were registered. The highest level of pollen sterility was detected for cultivars with low levels of ovule abnormalities as a compensatory mechanism for cultivar productivity. Our research forms the conditions for the creation of a preliminary dataset of the Armenian apricot gene pool, making possible the identification of the causes of low yield and the selection of cultivars with low levels of male and female sterility. Morphometric and cytoembryological profiles of Armenian apricot cultivars can provide important information for the success of breeding programs.
Nebish, A.A., Santrosyan, G.S. and Aroutiounian, R.M. (2018). Reproductive biology of Armenian apricot cultivars. Acta Hortic. 1214, 95-102
Prunus armeniaca L., Armenia, flower, pistil, ovule, stamen, pollen, sterility