Method for culturing variety (line) with high phosphorus efficiency by using soybean root configuration near-isogenic line
A near-isogenic line and soybean root technology, applied in the field of genetic improvement and utilization of phosphorus nutrition in design crops, can solve the problems of difficulty in popularization and application, difficulty in obtaining mutant materials, and high cost, so as to improve breeding efficiency and overcome phenotypic selection Difficulty and cascading burdens, the effect of rapid integration
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[0033] The method for cultivating phosphorus-efficient varieties (lines) using near-isogenic lines of soybean root configuration is carried out according to the following steps:
[0034] (1) Constructing a recombinant inbred line with root traits related to phosphorus efficiency: BD2, a local variety in Boluo County, Guangdong, with low phosphorus efficiency and deep roots, was used as the female parent, and BX10, a commercial variety introduced from Brazil with high phosphorus efficiency and shallow roots, was used as the male parent. produce F 1 Generation, self-crossing to get F 2 Generation, via single seed transfer method to F 9 Generation (or F 9 generation above), get F 9 Generation recombinant inbred line RIL(F 9 ).
[0035] (2) Mapping of high-efficiency phosphorus QTLs: the above-mentioned F9 generation recombinant inbred line RIL(F 9 ) as the material, respectively in high phosphorus (160kg / hm 2 ), low-phosphorus (no phosphorus application) and low-phosphorus...
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