It has been suggested that the collaborative cross, a large set of recombinant inbred strains derived from eight inbred mouse strains, would be a powerful resource for the dissection of complex phenotypes. Here we use simulation to investigate the power of the collaborative cross to detect and map small genetic effects. We show that for a fixed population of 1000 individuals, 500 RI lines bred ...

Key inbred lines have played a fundamental role in maize genetics and breeding. Research on variation characteristics of key genes from key inbred lines and from derived lines is important for early identification and evaluation of inbred maize lines. The nitrate reductase (NR) gene, which plays a central role in nitrate acquisition, was the target gene for this research. Forty-one inbred maize...

Brachypodium distachyon (Brachypodium) has emerged as a useful model system for studying traits unique to graminaceous species including bioenergy crop grasses owing to its amenability to laboratory experimentation and the availability of extensive genetic and germplasm resources. Considerable natural variation has been uncovered for a variety of traits including flowering time, vernalization r...

It has been suggested that the collaborative cross, a large set of recombinant inbred strains derived from eight inbred mouse strains, would be a powerful resource for the dissection of complex phenotypes. Here we use simulation to investigate the power of the collaborative cross to detect and map small genetic effects. We show that for a fixed population of 1,000 individuals, 500 RI lines bred...

Stripe rust (yellow rust) caused by Puccinia striiformis f. sp. tritici, one of the most dangerous diseases wheat. Marker assisted selection methods make it possible to accelerate resistance gene donors improve breeding material through their introduction into hybridization programs. The goal this study was determine presence/absence yellow genes in wheat recombinant inbred lines Almaly/Avocet ...

Abstract Sclerotinia blight is a soilborne disease caused by minor Jagger and can produce severe decrease in yield. Cultural management strategies chemical treatment are not completely effective; therefore, growing peanut‐resistant varieties likely to be the most effective control method for this disease. resistance has been identified wild Arachis species further transferred peanut elite culti...

background and objectives: the development of high yielding cultivars with wide adaptability is the ultimate aim of plant breeders. however, attaining this goal is made more complicated by genotype-environment interactions. the genotype by environment interaction is a major problem in the study of quantitative traits because it complicates the interpretation of genetic experiments and makes pre...

Knockdown Resistance to High Temperature (KRHT) is an adaptive trait of thermotolerance in insects. An interval mapping was performed on chromosome X of Drosophila melanogaster to search for quantitative trait loci (QTL) affecting KRHT. A backcross population was obtained from two lines that dramatically differ for KRHT. Microsatellites were used as markers. Composite interval mapping identifie...

We describe a new approach, called recombinant inbred intercross (RIX) mapping, that extends the power of recombinant inbred (RI) lines to provide sensitive detection of quantitative trait loci (QTL) responsible for complex genetic and nongenetic interactions. RIXs are generated by producing F1 hybrids between all or a subset of parental RI lines. By dramatically extending the number of unique,...

Total flower and pod numbers (TFPN) effective per plant (PNPP) are among the most important agronomic traits for soybean production. However, underlying genetic mechanism remains unclear. In this study, we constructed a recombinant inbred line population derived from cross between JY73 (high TFPN) TJSLH (low to map loci two traits. total, six QTL TFPN five PNPP were identified, which on chromos...