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Symptoms of wheat stem rusts and scoring classifications
Bob McIntosh describes different symptoms of stem rusts as well as appropriate techniques for classifying the severity of rust infections.
Leaf-level water use efficiency determined by carbon isotope discrimination in rice seedlings: genetic variation associated with population structure and QTL mapping
Increasing the water use efficiency (WUE) of our major crop species is an important target of agricultural research. Rice is a major water consumer in agriculture and it is also an attractive genetic model. We evaluated ...
Investigating early vigour in upland rice (Oryza sativa L.): Part II. Identification of QTLs controlling early vigour under greenhouse and field conditions
Early vigour is an important characteristic for direct-seeded rice systems. The genetic control of early vigour was studied using a population of 129 backcross lines derived from a cross between Vandana, an improved indica, ...
Inclusive composite interval mapping of quantitative trait genes
Rapid increase in the availability of fine-scale genetic marker maps has led to the intensive use of QTL mapping in the genetic study of quantitative traits. Composite interval mapping (CIM) is one of the most commonly ...
The large-effect drought-resistance QTL qtl12.1 increases water uptake in upland rice
Drought stress is the most important abiotic factor limiting upland rice yields. Identification of quantitative trait loci (QTL) conferring improved drought resistance may facilitate breeding progress. We previously mapped ...
REML is an effective analysis for mixed modelling of unbalanced on-farm varietal trials
On-farm participatory varietal selection (PVS) trials are often of two types: mother trials (with all of the entries) and baby trials (each having one, or very few of the entries from the mother trials). We conducted PVS ...
Improving carotenoids and amino-acids in Cassava
More than 800 million people in tropics and sub tropics use cassava as food. However, its roots are poor in protein content (0.7-2%). Amino acids such as lysine and methionine are also low, and some research reports indicate ...