58 resultados para breeding goals
Resumo:
In the past 20 years, the rice-breeding program in Thailand had little success in developing new cultivars to replace Kao Dawk Mali 105 (KDML105) and Kao Khor 6 (RD6). Main reason is a poor adoption of new cultivars by farmers due to poor adaptation of new cultivars to the rainfed environments, susceptibility to diseases and insect pests and unacceptable grain qualities. The conventional breeding program also takes at least 15 years for releasing new cultivars. New breeding strategy can be established to shorten period for cultivar improvement by using marker-assisted selection (MAS), rapid generations advance (RGA), early generation testing in multi-locations for grain yield and qualities. Four generation of MAS backcross breeding were conducted to transfer gene and QTL for bacterial blight resistance (BLB), submergence tolerance (SUB), brown planthopper resistance (BPH) and blast resistance (BL) into KDML105. Selected backcross lines, introgressed with target gene/QTL, were tolerant to SUB and resistant to BLB, BPH and BL. The agronomic performance and grain quality of these lines were as good as or better than KDML105.
Resumo:
The principle goals of treating diabetes in cats are to correct the major clinical signs of diabetes (weight loss, polydipsia / polyuria, and polyphagia or inappetence), and to prevent diabetic ketoacidosis. Additional goals are to minimize the risk of hypoglycaemia by appropriate dose adjustment of insulin or oral hypoglycaemic agents. Appropriate therapy of cats may also lead to diabetic remission, although currently it is not possible at diagnosis to predict which cats are more likely to go into remission. Treatment that is most effective in correcting hyperglycaemia is more likely to lead to remission by facilitating the recovery of the pancreatic cells from glucose toxicity.