Study of the impact of growth substance treatment and maize (Zea mays L.) variety in spelt (Triticum spelta L.) haplodiploidization

摘要

So far as we know, this is the first study on spelt (Triticum spelta L.) haplodiploidization. The technique used involved an inter-generic cross with maize (Zea mays L.). The rate of embryos/100 pollinated florets was 16.1. The spelt breeding line hadno significant effect on embryo production, but the maize variety did, and an interaction between spelt breeding line and maize variety was found. The best rate was obtained with a maize variety of the popcorn type. The rate of caryopsis formation was low (66.2 caryopses/100 pollinated florets). The rate of plantlet regeneration was very low (38 plantlets/100 embryos), with the maize variety having an impact, but not the spelt line.