24.05.2019

The findings were published in the open-access journal BMC Genomics.

Traditional plant-breeding methods for Brachiaria grasses involve one of two complex techniques. One is to grow the plant to seed, and to study the seeds under a microscope to determine if the plant reproduced asexually. The other involves excising the plant’s embryos and conducting a similar analysis. Both techniques require many weeks, significant funds and highly trained specialists.

Asexual reproduction through seed, called apomixis, is key in developing new crop varieties for widespread use. Crops that reproduce through apomixis conserve the same traits from one generation to the next, essentially locking in sought-after characteristics such as drought tolerance or high nutritional value. Plants that reproduce sexually do not reliably pass on desired traits to subsequent generations.

Apomixis propagation: improved grass varieties for smallholders

With this molecular marker, plant breeders can run a quick and inexpensive test when Brachiaria grasses are seedlings to identify whether they reproduce through apomixis.