A New codominant CAPS marker for sex genotype identification in asparagus

DNA marker to reduce the time required for asparagus breeding

Overview

　Garden asparagus is a dioecious species, with male [XY] and female [XX] individuals. Since male individuals are preferred over females for agricultural production, all-male cultivars have agronomic advantages over mixed-sex cultivars.
　To produce an all-male cultivar, it is important to obtain a supermale [YY]. Given their morphological similarities, males and supermales are usually distinguished by genetic analysis. Although two sex-linked codominant markers (Asp2-SP6 and RM17) have been reported previously, their ability to distinguish the sex in A. officinalis and other dioecious Asparagus species was limited.
　We developed a new CAPS marker (SSM01). SSM01 is applicable for discrimination between X- and Y-specific sequences in various A. officinalis and purple asparagus cultivars, also in three dioecious Asparagus species.

Product Application

・Producing an all-male cultivar of A. officinalis, purple asparagus, or other dioecious Asparagus species

Related Works

[1] Akahori, M., Kanno, A. Euphytica 218, 75 (2022).
https://doi.org/10.1007/s10681-022-03029-5

IP Data

IP No.　 ： 2022-138701（JP）　
Inventor ： Akira Kanno
keyword ： Asparagus, breeding