Page "Triticale" Paragraph 17

Chromosome elimination is another method of producing DHs, and involves hybridisation of wheat with maize ( Zea mays L .), followed by auxin treatment and the artificial rescue of the resultant haploid embryos before they naturally abort.

This technique is applied rather extensively to wheat.

Its success is in large part due to the insensitivity of maize pollen to the crossability inhibitor genes known as Kr1 and Kr2 that are expressed in the floral style of many wheat cultivars.

The technique is unfortunately less successful in triticale.

However, Imperata cylindrica ( a grass ) was found to be just as effective as maize with respect to the production of DHs in both wheat and triticale.