Preliminary Localization of Five Qualitative Traits in Kenaf Genetic Linkage Map

Abstract

With the genetic linkage map construction for kenaf and quantitative trait loci mapping, it is possible to perform marker-assisted selection to improve kenaf agronomical important traits at molecular level. In this investigation, using a population with 162 F 2:3 individuals from the cross between Alian kenaf (from Egypt) and Fuhong 992 (from Fujian agriculture and forestry university) with high quality and disease resistance, on the basis of the linkage map we had finished, we finally mapped five qualitative trait genes for leaf petiole color, leaf shape, dimension of corolla, corolla shape, stem color at late stage. Analysis using the Mapmaker/Exp 3.0 software showed that there were close linkage relation between the gene of stem color at late stage and leaf petiole color gene, with a genetic distance of 2.8 cM, which were mapped on the linkage group 5. Also linkage existed between dimension of corolla and corolla shape, with a genetic distance of 14.7 cM, which were mapped on the linkage group 6. The genetic distance between leaf shape and dimension of corolla, corolla shape, were 38.2 cM and 23.5 cM, respectively. They were mapped on the linkage group 6, but their linkage relation still requires further research. The results had certain practical significance and by molecular marker-assisted selection were useful for the research of kenaf genetics and the breeding.

Genetic linkage map construction for kenaf using SRAP, ISSR and RAPD markers

“…This genetic linkage map constitutes a useful starting point in kenaf to study the genetics of important agronomic traits including qualitative and quantitative traits. In fact, we have preliminarily located five qualitative traits and six yield traits on this map (Chen et al. 2011a,b).…”

Langevin transducer with a stepped polymer horn

“…Ultrasonic transducers usually have multiple forms such as Langevin-type, thin-film, tubular, and flextensional transducers. [1][2][3][4] Among them, the Langevin transducer, which comprises a front head, a rear end, a pre-stressed bolt, and several pieces of piezoelectric ceramics, is the most widely used. The front head and the rear end connected by piezoelectric ceramics are generally made of metals.…”