Stress protein (SDS-PAGE) for MAS-breeding: Seed characteristics and vigour to detect stable QTLs using seed protein markers in developing drought tolerance in rice (O. sativa L.)

摘要

To date, verification of yield QTLs prior to molecular MAS breeding has been found to be an essential step towards cultivar improvement. Therefore, without a thorough understanding of the physiological and agronomic particulars of any QTL and the target-environment, MAS for QTL showing qualitative interactions should be firstly minimized, because it is regarded as non-random association between genetic markers and trait values for drought tolerance. In that, root characters and other growth parameters involved in regeneration potential (after release of drought) are vital components. Conceptually, it is similar to recombination mapping of several loci spread over the rice genome. Seed vigour, root morphology (length, volumes, regeneration capacity of root after drought, grain yield (fertility vs. sterility), affect on the seedling tillering, and apparent water translocation rate from roots to shoot and shoot to leaves should be responsible for nutritional translocation in scoring drought injury index.