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Tibetan semi-wild wheat (Triticum aestivum ssp. tibetanum Shao) is a hexaploid wheat resource distributed only in Tibet that has an interesting type of seed dormancy in addition to hulled glumes and brittle spikelets. A whole-genome linkage map of T. aestivum ssp. tibetanum was constructed for a population of 186 recombinant inbred lines using 645 diversity array technology (DArT) markers, 127 simple...
Seed aging or deterioration in rice (Oryza sativa L.) is a major problem for agronomic production and germplasm preservation. Deciphering the genetic mechanism involved in seed aging and improving seed storability is therefore a vital goal for rice breeding. A set of 85 backcross inbred lines derived from the backcross ‘Sasanishiki’ (japonica cv.)/‘Habataki’ (an indica cv. with strong seed storability)//‘Sasanishiki’...
Phosphorus (P) deficiency is one of the major limiting factors in maize production in many developing countries. This experiment was conducted to evaluate multiple low-P tolerance criteria and identify the suitable maize germplasm for our future low-P tolerance breeding. A total of 456 diverse maize inbreds were evaluated for low-P tolerance at seedling stage using four shoot-related traits and six...
A meta-analysis of quantitative trait loci (QTL) associated with tolerance to abiotic stresses in barley was carried out using results from 35 different experiments. “MetaQTL” software was used to project QTL positions on a reference map. Three hundred and thirty-seven QTL for traits associated with tolerance to abiotic stresses were included in this analysis which identified 79 metaQTL (MQTL) including...
Improving grain-quality is an important goal in rice breeding programs. One vital step is to find major quantitative trait loci (QTLs) for quality related traits and then investigate the relationships among them. We crossed ‘N22’, an indica variety with good appearance but low grain weight, to a japonica variety, ‘Nanjing35’, with superior grain yield but poor appearance. This enabled us to construct...
Stripe rust, caused by Puccinia striiformis f. sp. tritici, is one of the most devastating foliar diseases of common wheat (Triticum aestivum L.) worldwide. Growing resistant cultivars is the most effective approach to control the disease. To determine inheritance of stripe rust resistance and map the resistance gene in a common wheat line D31, developed from Triticum sphaerococcum Perc. (accession...
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