Effect of parental genotypes on haploid embryo formation in wheat x maize hybridization

• Main Authors: Kondić-Špika Ankica, Kobiljski Borislav
• Format: Article
• Language: English
• Published: Serbian Association of Plant Breedings and Seed Producers 2005-01-01
• Series: Selekcija i Semenarstvo
• Subjects: wheat x maize; haploids; genotype
• Online Access: http://scindeks-clanci.ceon.rs/data/pdf/0354-5881/2005/0354-58810504007K.pdf

Wheat x maize hybridization method is an efficient and frequently used system for production of haploids in wheat. With the intention of further improving the efficiency of this method, the aim of this work was to analyze the influence of wheat genotype, as well as pollinator genotype (maize) on fertilization frequency (no. of open-pollinated seeds per 100 pollinated florets) and frequency of haploid embryos (no. of haploid embryos per 100 pollinated florets) in wheat x maize hybridization. Thirteen wheat (Triticum aestivum L) combinations were crossed with two different maize (Zea mays L) genotypes. The results have shown that there were significant differences among wheat combinations, as well as between maize genotypes in relation to the studied characters. Significant differences in fertilization frequency were found between pollinators in three wheat combinations (Banks/Rodna Banks/NS-205-98 and Lira/Sonata). In these combinations, significantly better results were obtained in the crosses with Kelvedon Glory pollinator. The advantage of this pollinator was specially expressed in the frequency of haploid embryos, which ranged from 0.2 to 3.6% in relation to the total number of pollinated florets. In wheat crosses with ZPSC-213 pollinator, the frequency of haploid embryos ranged from 0 to1.2%. No significant difference between the pollinators in regard of this trait was found in combination Banks/Rodna, while all other wheat combinations had significantly greater number of haploid embryos in the crosses with Kelvedon Glory pollinator.