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One of the critical factors restricting the progress in crop breeding and genetic studies is the time required in generating desired ‘pure line’ segregating populations. We developed a procedure that can advance up to seven generations of canola per annum, allowing the production of pure line populations within a year. An ‘all soil’ method was compared with an ‘embryo culture plus soil’ procedure...
In previous studies, we successfully transferred the P genome of Agropyron cristatum into wheat using wide hybridization methods. In the current investigation, repetitive sequences were cloned and DNA markers specific for the P genome of A. cristatum were developed. Three P genome-specific markers, designated OPX07-1036, OPX11-817 and OPC05-1539, were identified and isolated using random amplified...
Summary The dangers of a narrow genetic base of the world's major domesticated food crops have become a great global concern in recent decades. The efforts of the International Maize and Wheat Improvement Center (CIMMYT) to breed common wheat cultivars for resource poor farmers in the developing world (known as the Green Revolution wheats) has met with notable success in terms of improved yield, yield...
Development of hybrids is considered to be a promising avenue to enhance the yield potential of crops. We investigated (i) the amount of heterosis observed in hybrid progeny, (ii) relative importance of general (GCA) versus specific (SCA) combining ability, and (iii) the relationship between heterosis and genetic distance measures in four agronomic traits of spring bread wheat. Eight male and 14 female...
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