The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
High seed cost is a major factor limiting the adoption of hybrid rice in South and Southeast Asian countries. A practical way to improve hybrid seed production is to increase the outcrossing rate in rice. Several studies reveal that perennial wild Oryza species have a higher outcrossing rate than annual species. Among various traits that influence outcrossing, pistil characteristics are the most crucial...
Cotton fiber quality traits are controlled by multiple genes of minor effect. Identification of significant and stable quantitative trait loci (QTL) across environments and populations lays foundation for marker-assisted selection for fiber quality improvement and studies of its molecular regulation. Here, a detailed genetic map is constructed and QTL are detected based on an intraspecific recombinant...
Soil waterlogging is a primary constraint to crop yield both globally and in the United States, yet little is known about the genetic control of waterlogging tolerance in wheat. The objective of this study was to characterize genetic variation for key adaptive traits influencing waterlogging tolerance at the vegetative stage and to identify associated quantitative trait loci (QTL). Traits measured...
Common wheat is unique in providing a large number of diverse end-products, including chapati, biscuits, bread and noodles. Grain weight and other grain traits contribute to grain yield and milling quality. Many earlier QTL studies reported at least 332 QTLs for grain traits including grain weight. We conducted a QTL analysis (composite interval mapping) of grain traits using a set of 92 recombinant...
High temperature or heat stress is one of the most important abiotic stresses that affect wheat production in almost every part of the world. Parameters of chlorophyll fluorescence kinetics (PCFKs) are the most powerful and reliable characters available to understand the impact of various abiotic stresses on plant physiological processes and heat tolerance. The present research was aimed to identify...
Improvement of protein and starch quality is an important breeding objective for various wheat-based end products. The objectives of this study were to identify quantitative trait loci (QTLs) for flour protein content, wet gluten content, residue gluten content, gluten index, sedimentation volume, and rapid viscosity analysis parameters using two mapping populations. A total of 56 and 77 additive...
To produce rice varieties adaptable to unfavorable environments in Africa, New Rice for Africa (NERICA) varieties have been developed by inter-specific crossings. The basic idea of NERICA was to combine the useful characteristics of the African rice species Oryza glaberrima and an Asian rice species, Oryza sativa . However, the genetic basis of the agronomic characteristics...
Rice sheath blight (ShB), caused by Rhizoctonia solani , leads to severe yield losses in many rice production areas worldwide. Resistance to rice ShB is a typical quantitative trait controlled by quantitative trait loci (QTLs). To identify the QTLs responsible for ShB resistance, phenotypes for ShB resistance have been surveyed in different individuals/lines in various mapping populations...
Cotton is a leading natural fiber crop in the textile industry worldwide. The improvement of cotton fiber quality has become more important because of changes in spinning technology and ever-increasing demands. Mapping quantitative trait locus (QTL) for fiber quality traits will enable molecular marker-assisted selection (MAS) to improve fiber quality and provide an access to reveal the molecular...
Soybean (Glycine max L. Merr.) is a major crop and a leading source of protein meal and edible oil worldwide. Plant height (PHT), lodging (LDG), and days to maturity (MAT) are three important agronomic traits that influence the seed yield of soybean. The objective of this study was to map quantitative trait loci (QTL) for PHT, LDG and MAT using a high density SNP map of a recombinant inbred line soybean...
Worldwide climate change has increased the risk of crop yield losses caused by flooding. Here, we report the development of maize F 1 hybrids containing a teosinte QTL for flooding tolerance on chromosome 4 and the evaluation of flooding tolerance under reducing soil conditions. We used F 1 hybrid Mi29 × Mi47 (cultivar Yumechikara) and two versions of Yumechikara into...
Pre-harvest sprouting in spring wheat causes significant financial loss to growers throughout the world and sprouting damage can be reduced by growing resistant genotypes. Several genetic factors, especially those related to seed dormancy, are involved in the control of pre-harvest sprouting resistance. The objective of this study was to identify quantitative trait loci (QTL) influencing pre-harvest...
The main objective of this study was to dissect the genetic basis of rice flowering regulated by temperature. We used two indica varieties Zhenshan 97 and Zhongzao 18, and 168 recombinant inbred lines (RILs) derived from them to estimate temperature effects on heading date (HD). Tests under four different photoperiod and temperature conditions in growth chambers showed that HD of...
Asian soybean rust (ASR), caused by the fungus Phakopsora pachyrhizi, is one of the most serious soybean diseases in South America and other tropical and sub-tropical areas. The soybean lines, ‘Xiao Jing Huang,’ ‘Himeshirazu,’ and ‘Iyodaizu B’ were previously identified for their resistance to ASR fungus, while the genetic basis of the resistance has yet to be known. In this study, we mapped the ASR...
Melon yellow spot virus (MYSV), a member of the genus Tospovirus, is a devastating thrips-transmitted virus of cucurbits. The cucumber accession 27028930 was found to be resistant to MYSV in our previous study. In the present study, we identified quantitative trait loci (QTLs) conferring resistance to two MYSV isolates, MYSV-FuCu05P and MYSV-S. An F2 population derived from a cross between accession...
A genetic analysis of plant characters associated with lodging resistance, yield and other agronomic traits was made on two doubled haploid winter wheat populations grown at two UK locations in the 2004/2005, 2005/2006 and 2006/2007 seasons. Wide genetic variation was found for traits that affect lodging, including plant height, components of stem strength (stem diameter, wall width and material strength),...
Ear row number (ERN) is not only a key trait involved in maize (Zea mays L.) evolution but also an important component directly related to grain yield. In this report, 325 recombinant inbred lines (RILs, F6:7) derived from a cross between B73 with 16 rows and SICAU1212 with four rows (two-ranked with two rows per rank) were utilized to detect quantitative trait loci (QTL) associated with ERN and...
Plant traits play an important role in determining plant density and final grain yield. In this study, two related RIL populations developed from two crosses between one high-oil maize inbred and two normal dent maize inbreds were evaluated for 13 plant traits under four environments. QTL were detected within population and in joint-population analysis, and compared with the result obtained in the...
High frequency of albino haploids/doubled haploids (DHs), regenerated in androgenic cultures is one of the major obstacles that limit incorporation of DHs technology into cereal breeding programs. Therefore, quantitative trait loci (QTL) associated with albino plant production in triticale anther cultures were analyzed using the population of 90 DH lines derived from F1 cross ‘Saka 3006’ × ‘Modus’...
The synchronization of flowering with the time of most favorable temperatures and light has substantial effects on grain yield and quality. In bread wheat, the major developmental genes determining vernalization requirement (Vrn-1) and photoperiod response are used in breeding cultivars adapted to different latitudes and climates. Fine regulation of flowering date is provided by minor genes whose...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.