Single marker analysis to associate SSR marker to yield component traits in interspecific hybridization between Helianthus annuus L. and Helianthus argophyllus Torr. & A. Gray

Abstract

In the present investigation sunflower marker-trait association were studied for eight yield component traits using sixteen polymorphic SSR markers with a set of 123 BC1F1 population of the cross CMS 38B × HEL 153/83. Association of mean performance of BC1F2 families of corresponding BC1F1 individuals and with corresponding marker score were assessed for single marker analysis by using student’s t test in SPSS version 16. A total of fourteen markers gave significant association with at least one of the eight traits studied. Most of the markers were found to be related to more than one trait. The markers ORS 1146 was found to be associated with three traits viz., days to 50% flowering, head diameter and oil content. This indicates that the same gene is controlling the expression of these characters. Some of the markers were associated to only one trait. Moreover, phenotypically these characters have more association with each other. Hence these markers may be useful for marker assisted breeding programme on further validation in different genetic backgrounds.