WebThe induced haploids are doubled by colchicine and immediately tested for agronomic performance. The traditional technology is based on an inbred called Stock 6 that induces haploids when crossed as a male (1) and, in modern lines, has been reported to induce haploids at frequencies as high as ~15% (2). The key underlying gene, called Webinant way in maize (Chang and Coe, 2009; Geiger, 2009). This method was first reported in 1959 with the discovery of maize haploid inducer Stock 6, producing 2%–3% maternal haploids when outcrossed as a male. Over the years, haploid induction rates (HIR) increased to 8%–10% due to development of high

Matroclinic Haploidy and Gamete Interaction in Maize

WebThree approaches are generally used to develop DH lines: (1) microspore and anther culture, (2) wide hybridization between different species (such as the use of maize as a haploid inducer in wheat) to induce chromosome elimination, and (3) the use of particular inducer genotypes within species that facilitate the production of kernels with … fls advance tobil estabil crossing t-u

Cytomixis in plants: facts and doubts - PubMed

WebIn this chapter we describe cytological techniques to study cytomixis, a process of nuclear migration between plant cells, in squashed plant male meiocytes of Nicotiana tabacum … WebThe migration of nuclei between plant cells (cytomixis) is a mysterious cellular phenomenon frequently observable in the male meiosis of higher plants. Cytomixis attracts attention because of unknown cellular mechanisms underlying migration of nuclei and its potential evolutionary significance, since the genetic material is transferred between ... WebJan 3, 2024 · In maize breeding, several Haploid strategies for producing haploid and doubling haploids have been identified. Two gene sets are produced when haploid (n) cells undergo artificial or spontaneous chromosomal doubling so that are perfectly identical are resulting in a Doubled Haploid (DH) genotype [11]. greenday co