Theoretical Bases and Sources for Breeding Wheat for Combined Disease Resistance

Breeding for Salt-Resistance Using Transgressive Segregation in Spring Wheat

Hybrid populations (F3) derived from cross between four moderate salt-resistant spring wheat (Triticum aestivum L.) were assessed for transgressive segregation of salt-tolerant genotypes allowing germination and emergence at 350 mM NaCl for 30 days. The achieved Selection intensity was the order of 0.24-0.27 in these segregation populations (22-25 seedlings from 9000 seeds). Assessment of trans...

breeding for salt-resistance using transgressive segregation in spring wheat

hybrid populations (f3) derived from cross between four moderate salt-resistant spring wheat (triticum aestivum l.) were assessed for transgressive segregation of salt-tolerant genotypes allowing germination and emergence at 350 mm nacl for 30 days. the achieved selection intensity was the order of 0.24-0.27 in these segregation populations (22-25 seedlings from 9000 seeds). assessment of trans...

Theoretical Bases of Photovoltaic Concentrators for Extended Light Sources

The theoretical bases for casting maximum energy on a cell placed in a static concentrator of minimum entry aperture are derived. Several concentrators are analysed according to this theory and the gain achievable with each is obtained. When practical materials are used the maximum gain is about 9 for the direct beam source and about 4.5 for diffuse radiation. One of the concentrators analysed ...

Novel genes for disease-resistance breeding.

Plant disease control is entering an exciting period during which transgenic plants showing improved resistance to pathogenic viruses, bacteria, fungi and insects are being developed. This review summarizes the first successful attempts to engineer fungal resistance in crops, and highlights two promising approaches. Biotechnology provides the promise of new integrated disease management strateg...

Breeding Cattle for Genetic Resistance to Disease