A method for identifying salt-tolerant cotton and special ssr marker
A cotton and salt-tolerant technology, applied in biochemical equipment and methods, microbiological determination/inspection, DNA/RNA fragments, etc., can solve the difficulties in breeding and identification of salt-tolerant varieties, complex salt-tolerant cotton, and lack of unity Recognize and other issues, achieve stable and reliable results, not subject to seasonal restrictions, and simple operation
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Embodiment 1
[0080] Example 1. Salt tolerance-related marker screening
[0081] 1. Screening of a single marker
[0082] First, 4 materials with different salt tolerance (2 typical salt-tolerant materials Zhong 9835 and Zhong 07, 2 typical salt-sensitive materials Zhong S9612 and Xinyan 96-48) were selected for SSR primer screening ( figure 1 ). 246 pairs of polymorphic primers were initially screened out of 5053 pairs of SSR primers, accounting for 6.21%. These 246 pairs of primers were used as candidate primers for further research.
[0083] Using 6 materials: 9835, Zhong 07, Zhong 9806, Zhong S9612, Xinyan 96-48 and 16 pairs of Lumianyan, 246 pairs of SSR were screened for further re-screening, and 95 pairs with obvious differences, clear and easy to identify band patterns were selected The primers were used for PCR amplification of 48 test materials. Through careful observation and analysis of the electrophoretic bands, it was found that 5 markers (CSHES149, HAU773, HAU1058, HAU191...
Embodiment 2
[0133] Embodiment 2, carrying out salt-tolerant cotton identification with marker combination
[0134] The details of the 11 materials used in this example are as follows: J1: Zhongjian 9901; J2: Zhongjian 9902; J3: Zhongjian 9903; J4: Zhongjian 9904; J5: Zhongjian 9905; J6: Zhongjian 9906; J7: Zhongjian 9907; J8: Zhongjian 9908; J9: Zhongjian 9909; J10: Zhongjian 9910; J11: Zhongjian 9911;
[0135] The public can purchase the above 11 materials from the National Cotton Germplasm Bank of the Cotton Research Institute of the Chinese Academy of Agricultural Sciences.
[0136] (1) Single plant detection method
[0137] 1. Materials: 11 materials (J1~J11).
[0138] 2. Three-marker combination: HAU1918(T4), HAU1058(T3A and T3B) and TMB1288(S1)
[0139] 3. Method:
[0140] The DNA of one individual plant from each material was randomly selected, and then used as a template for SSR-PCR amplification and detection of amplified products.
[0141] According to the individual plant ...
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