Search Results - "Frei, Ursula K"

Development of doubled haploid inducer lines facilitates selection of superior haploid inducers in maize by Chen, Yu-Ru, Lübberstedt, Thomas, Frei, Ursula K

“…Haploid inducers are key components of doubled haploid (DH) technology in maize. Robust agronomic performance and better haploid induction ability of inducers…”
Get full text

Self-supervised maize kernel classification and segmentation for embryo identification by Dong, David, Nagasubramanian, Koushik, Wang, Ruidong, Frei, Ursula K, Jubery, Talukder Z, Lübberstedt, Thomas, Ganapathysubramanian, Baskar

“…Computer vision and deep learning (DL) techniques have succeeded in a wide range of diverse fields. Recently, these techniques have been successfully deployed…”
Get full text

Breeding Maize Maternal Haploid Inducers by Uliana Trentin, Henrique, Frei, Ursula K, Lübberstedt, Thomas

“…Maize doubled haploid (DH) lines are usually created in vivo, through crosses with maternal haploid inducers. These inducers have the inherent ability of…”
Get full text

Auxin Binding Protein 1 Reinforces Resistance to Sugarcane Mosaic Virus in Maize by Leng, Pengfei, Ji, Qing, Asp, Torben, Frei, Ursula K., Ingvardsen, Christina R., Xing, Yongzhong, Studer, Bruno, Redinbaugh, Margaret, Jones, Mark, Gajjar, Priyanka, Liu, Sisi, Li, Fei, Pan, Guangtang, Xu, Mingliang, Lübberstedt, Thomas

“…Dear Editor, Sugarcane mosaic virus （SCMV） causes severe viral diseases in maize worldwide （Fuchs and Gruntzig, 1995）, resulting in significant losses in grain…”
Get full text

Impact of Spontaneous Haploid Genome Doubling in Maize Breeding by Boerman, Nicholas A, Frei, Ursula K, Lübberstedt, Thomas

“…Doubled haploid (DH) technology has changed the maize-breeding landscape in recent years. Traditionally, DH production requires the use of chemical doubling…”
Get full text

MYO, a Candidate Gene for Haploid Induction in Maize Causes Male Sterility by Vanous, Kimberly, Lübberstedt, Thomas, Ibrahim, Rania, Frei, Ursula K.

“…Doubled haploid technology is highly successful in maize breeding programs and is contingent on the ability of maize inducers to efficiently produce haploids…”
Get full text

Genomic estimated selection criteria and parental contributions in parent selection increase genetic gain of maternal haploid inducers in maize by Chen, Yu-Ru, Frei, Ursula K., Lübberstedt, Thomas

“…Key message Parental combinations determined by genomic estimated usefulness and parental contributions of the lines in bridging population can enhance the…”
Get full text

Frequency, type, and distribution of EST-SSRs from three genotypes of Lolium perenne, and their conservation across orthologous sequences of Festuca arundinacea, Brachypodium distachyon, and Oryza sativa by Asp, Torben, Frei, Ursula K, Didion, Thomas, Nielsen, Klaus K, Lübberstedt, Thomas

“…Simple sequence repeat (SSR) markers are highly informative and widely used for genetic and breeding studies in several plant species. They are used for…”
Get full text

PollenCALC: software for estimation of pollen compatibility of self-incompatible allo- and autotetraploid species by Aguirre, Andrea Arias, Wollenweber, Bernd, Frei, Ursula K, Lübberstedt, Thomas

“…Self-incompatibility (SI) is a biological mechanism to avoid inbreeding in allogamous plants. In grasses, this mechanism is controlled by a two-locus system…”
Get full text

Accelerating plant breeding by De La Fuente, Gerald N., Frei, Ursula K., Lübberstedt, Thomas

“…•We propose a concept for an in vitro nursery as a tool to reduce cycle time.•Rapid cycles of meiosis and mitosis would enable multiple generations per…”
Get full text

"PolyMin": software for identification of the minimum number of polymorphisms required for haplotype and genotype differentiation by Frei, Ursula K, Wollenweber, Bernd, Lübberstedt, Thomas

“…Analysis of allelic variation for relevant genes and monitoring chromosome segment transmission during selection are important approaches in plant breeding and…”
Get full text

Mapping of QTL and identification of candidate genes conferring spontaneous haploid genome doubling in maize (Zea mays L.) by Ren, Jiaojiao, A. Boerman, Nicholas, Liu, Ruixiang, Wu, Penghao, Trampe, Benjamin, Vanous, Kimberly, Frei, Ursula K., Chen, Shaojiang, Lübberstedt, Thomas

“…•New QTLs related to spontaneous haploid genome doubling (SHGD) in maize were identified by selective genotyping.•Candidate gene analysis within the qshgd1…”
Get full text

Fine mapping of major QTL qshgd1 for spontaneous haploid genome doubling in maize (Zea mays L.) by Foster, Tyler L., Kloiber-Maitz, Monika, Gilles, Laurine, Frei, Ursula K., Pfeffer, Sarah, Chen, Yu-Ru, Dutta, Somak, Seetharam, Arun S., Hufford, Matthew B., Lübberstedt, Thomas

“…Key message A large-effect QTL was fine mapped, which revealed 79 gene models, with 10 promising candidate genes, along with a novel inversion. In commercial…”
Get full text

Protocols for In Vivo Doubled Haploid (DH) Technology in Maize Breeding: From Haploid Inducer Development to Haploid Genome Doubling by Aboobucker, Siddique I, Jubery, Talukder Z, Frei, Ursula K, Chen, Yu-Ru, Foster, Tyler, Ganapathysubramanian, Baskar, Lübberstedt, Thomas

“…Doubled haploid (DH) technology reduces the time required to obtain homozygous genotypes and accelerates plant breeding among other advantages. It is…”
Get more information

Usefulness of temperate-adapted maize lines developed by doubled haploid and single-seed descent methods by Santos, Iara Gonçalves dos, Verzegnazzi, Anderson Luiz, Edwards, Jode, Frei, Ursula K., Boerman, Nicholas, Tonello Zuffo, Leandro, Pires, Luiz P. M., de La Fuente, Gerald, Lübberstedt, Thomas

“…Key message Spontaneous haploid genome doubling is not associated with undesirable linkage drag effects. The presence of spontaneous doubling genes allows…”
Get full text

Genetic variation of seedling traits responded to brassinosteroid and gibberellin inhibitors in maize (Zea mays) doubled haploid lines by Hu, Kun, Xie, Ying, Wu, Chenglai, Frei, Ursula K., Lübberstedt, Thomas, Tuberosa, Roberto

“…The purpose of this study was to examine the genotypic variation in maize doubled haploid (DH) lines response to brassinosteroid and gibberellin inhibitors…”
Get full text

Classification approaches for sorting maize (Zea mays subsp. mays) haploids using single‐kernel near‐infrared spectroscopy by Gustin, Jeffery L., Frei, Ursula K., Baier, John, Armstrong, Paul, Lübberstedt, Thomas, Settles, A. Mark, Friedt, Wolfgang

“…Doubled haploids (DHs) are an important breeding tool for creating maize inbred lines. One bottleneck in the DH process is the manual separation of haploids…”
Get full text

Application of doubled haploids for target gene fixation in backcross programmes of maize by Lübberstedt, Thomas, Frei, Ursula K

“…With 2 figures ABSTRACT: Application of molecular markers in backcross (BC) programmes is well established. A combination of foreground and background…”
Get full text

Selection of Haploid Maize Kernels from Hybrid Kernels for Plant Breeding Using Near-Infrared Spectroscopy and SIMCA Analysis by Jones, Roger W., Reinot, Tonu, Frei, Ursula K., Tseng, Yichia, Lübberstedt, Thomas, Mcclelland, John F.

“…Samples of haploid and hybrid seed from three different maize donor genotypes after maternal haploid induction were used to test the capability of automated…”
Get full text

Utilization of Reduced Haploid Vigor for Phenomic Discrimination of Haploid and Diploid Maize Seedlings by Vanous, Kimberly, Jubery, Talukder Zaki, Frei, Ursula K., Ganapathysubramanian, Baskar, Lübberstedt, Thomas

“…Core Ideas There are many potential benefits of incorporating embryo culture into a doubled haploid program. There is no known non‐transgenic method of…”
Get full text