Method for identifying paddy female sterile gene FST molecule
A technology for molecular identification and femaleness, which is applied in biochemical equipment and methods, and microbial measurement/inspection, etc., can solve the problems of blocked development of ovule megaspores, lack of embryo sac, cumbersome methods, etc., and achieve a simple and easy identification method, Avoid cumbersome procedures, simple and economical identification method
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Embodiment 1
[0024] From the Ansanbyeo / G39 hybrid F2 population, a total of 220 individual plants, the genotype of the 220 individual plants was identified by embryomorphological observation and molecular identification method, and the identification results of the two methods were compared to investigate the reliability of the molecular identification method .
[0025] When observing embryo morphology, the embryo sac after flowering was stripped, fixed with glutaraldehyde fixative (1.4% glutaraldehyde, 2% paraformaldehyde, 50mM PIPES, pH 7.20), rinsed with PIPES, dehydrated with ethanol step by step (10 %-100%), embedded in paraffin, sectioned (2um), stained (0.5% toluidine blue + 0.1% Na 2 CO 3 ), examined under an optical microscope.
[0026] For molecular identification, take the leaves of the materials to be identified and extract the total DNA of rice; use FST-specific primers Gf1, Gr1, Jf1 and Jr1 for PCR reaction; add 3 μl of loading buffer, mix well, load 6 μl of the sample, and...
Embodiment 2
[0040] From Sangambyeo / G39 hybrid F2 generation population, a total of 340 individual plants were used to identify the genotypes of the 340 individual plants by hybridization verification and molecular identification methods. The identification results of the two methods were compared to investigate the reliability of the molecular identification method.
[0041] During hybridization verification, when paddy rice blooms, get fresh pollen to pollinate its stigma, bagging. Each plant was bagged with one ear, and the fruiting situation was inspected in two weeks.
[0042] For molecular identification, take the leaves of the material to be identified and extract the total DNA of rice; use FST specific primers Gf1, Gr1, Jf1 and Jr1 for PCR reaction; add 3 μl of loading buffer to mix and load 6 μl of the sample, and use 2% agarose gel, 1×TAE buffer, 125V electrophoresis for 40min; detect on the ultraviolet transilluminator, and identify the genotype of the material according to the ...
Embodiment 3
[0056] 20 rice male sterile lines and 50 various rice resources, 70 materials are all female fertile materials, the genotype of the materials was identified by molecular identification method, and the reliability of molecular identification method was investigated.
[0057] For molecular identification, take the leaves of the materials to be identified and extract the total DNA of rice; use FST-specific primers Gf1, Gr1, Jf1 and Jr1 for PCR reaction; add 3 μl of loading buffer, mix well, load 6 μl of the sample, and use 2% agarose gel , 1×TAE buffer, 125V electrophoresis for 40 minutes; detect on the ultraviolet transilluminator, and identify the genotype of the material according to the electrophoresis results. The molecular weights of PCR products whose genotype is wild type (+ / +) are 395bp and 663bp; the molecular weights of PCR products whose genotype is mutant (- / -) are 298bp and 655bp, and the mutant type is female sterile material; the genotype is heterozygous The molec...
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