High thousand-grain-weight gene of common wheat and application of high thousand-grain-weight gene
A 1,000-grain weight, wheat technology, applied to common wheat high 1,000-grain weight gene (TaGS5-A1b-b) and its application field, can solve the problem of no polymorphism found in the promoter region, achieve early screening, save time and resources Effect
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Embodiment 1
[0026] The investigation of the character of wheat of different varieties of embodiment 1
[0027] The inventor conducted field investigations on 166 representative local large-scale planted common wheat varieties and advanced lines from April to June every year in the Huanghuai wheat region from 2013 to 2015. The thousand-grain weight data of each variety are shown in Table 1.
[0028] Table 1 Survey table of traits of different varieties of wheat
[0029]
[0030] Table 1 Continuation 1 Survey of traits of different varieties of wheat
[0031]
[0032] Table 1 Continued 2 Survey of traits of different varieties of wheat
[0033]
[0034] Table 1 Continued 3 Survey of wheat traits of different varieties
[0035]
[0036] Table 1 Continued 4 Survey of traits of different varieties of wheat
[0037] .
Embodiment 2
[0038] Example 2 Identification of TaGS5-A1b-b Genotype Wheat Using Specific Primers
[0039] The test materials were 4 wheat varieties: Neixiang 184, Jimai 20, Gaocheng 9411, and Yumai 9. One seed was taken from each variety of wheat, and the genomic DNA of wheat grain was extracted according to the conventional method (Chen et al., 2011) as Template, PCR amplification with specific primers.
[0040] Specific primer pairs are as follows:
[0041] Upstream primer: 5'-TCATACACACATAATCCAGTCGA-3' (SEQ ID NO.3);
[0042] Downstream primer: 5'-GATCGTGGGTGTTGCATCTAT-3' (SEQ ID NO.4).
[0043] Composition of PCR reaction system: 1.5mmol / LMgCl 2 , 0.3mmol / LdNTP, 10pmol of upstream and downstream primers, 200ng template DNA, 0.5UTaq enzyme, add 1×PCR buffer (containing 10mmol / L Tris-HCl, pH9.0, 50mmol / LKCl, 1.0%TritonX-100) to constant volume to 25 μL.
[0044] PCR reaction program: first pre-denaturation at 95°C for 5 minutes; then denaturation at 94°C for 30 s, annealing at 55°C f...
Embodiment 3
[0048] Fengkang 13, Space 6, Pumai 9, and Neijiang 31 were detected using the same method as in Example 2. The results showed that the amplified products of Fengkang 13, Pumai 9, and Neijiang 31 were sequenced in the TaGS5-A1b gene. When there is no G insertion at the -1925bp position on the promoter, it is non-TaGS5-A1b-b genotype wheat; when there is a single base G insertion at the -1925bp upstream of the gene promoter after sequencing, it is TaGS5 - A1b-b genotype wheat. It can be seen from Table 1 that the thousand-grain weight of Tiankong 6 is 50.74 g, while the thousand-grain weight of Fengkang 13, Pumai 9 and Neijiang 31 are 43.88 g, 41.57 g and 32.56 g, respectively, which are the weights of TaGS5-A1b-b genotype wheat. The kernels were larger than those of non-TaGS5-A1b-b genotype wheat, therefore, the detection results were consistent with the investigation results.
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