The brown planthopper (BPH) is a major insect pest in rice, and damages these plants by sucking phloem-sap and transmitting viral diseases. Many BPH resistance genes have been identified in indica varieties and wild rice accessions, but none has yet been cloned. In the present study we report fine mapping of the region containing the Bph1 locus, which enabled us to perform marker-aided selectio...

The present study was conducted to evaluate the benefits of indeterminate growth habit in breeding to improve yield potential of Japanese soybean varieties, which exclusively have determinate growth habit. Two populations of recombinant inbred lines (RILs) derived from crosses between determinate Japanese cultivars and indeterminate US cultivars were grown in Akita and Kyoto, and seed weight pe...

We have analyzed the flowering behavior of two Arabidopsis ecotypes: the laboratory strain Landsberg erecta (Ler) and an ecotype from the tropical Cape Verde Islands (Cvi). They differ little in their flowering phenotypes and in their responses to photoperiod length changes and to vernalization treatment. However, segregating populations derived from crosses between them showed a much larger va...

In the construction of Recombinant Inbred Lines (RILs) from two divergent inbred parents certain genotype (or epigenotype) combinations may be functionally “incompatible” when brought together in the genomes of the progeny, thus resulting in sterility or lower fertility. Natural selection against these epistatic combinations during inbreeding can change haplotype frequencies and distort linkage...

In the construction of recombinant inbred lines (RILs) from two divergent inbred parents certain genotype (or epigenotype) combinations may be functionally "incompatible" when brought together in the genomes of the progeny, thus resulting in sterility or lower fertility. Natural selection against these epistatic combinations during inbreeding can change haplotype frequencies and distort linkage...

Resistance to Puccinia striiformis was examined in nine wheat recombinant inbred lines (RILs) from a cross between 'Camp Rémy' (resistant parent) and 'Récital' (susceptible parent) using an isolate of a strain common to the northwestern European population before 2011 (old) and two additional isolates, one representing an aggressive and high-temperature-adapted strain (PstS2) and another repres...

many agriculturally important traits are complex, affected by many genes and the environment. quantitative trait loci (qtl) mapping is a key tool for studying the genetic structure of complex traits in plants. in the present study qtls associated with yield and agronomical traits such as leaf number, leaf length, leaf width, plant height, stem and head diameter were identified by using 70 recom...

Sowing time of soybean (Glycine max [L.] Merr.) often coincides with the early onset of rainy season. Germinating seeds encounter a transient to prolonged period of water-logging that causes anoxia (absence of oxygen) and hypoxia (insufficient oxygen) resulting in poor germination. This reduces crop stability and yield. One of the factors responsible for flood tolerance is activity of alcohol d...

The aim of the study was to compare two methods for detection of polymorphism in a microsatellite locus, i.e. Capillary Electrophoresis (CE) ABI and QIAxcel, and High Resolution Melting (HRM), in respect of correct and efficient genotyping of a narrow-leafed lupin mapping population. The difference in length of the generated products by three SSR primers, between the parental forms were: less t...