Genetic diversity analysis method for inbreeding male giant freshwater prawn
A technology of genetic diversity and Macrobrachium rosenbergii is applied in the field of genetic diversity analysis of inbreeding male Macrobrachium rosenbergii. The effect of improving the quality of seedlings
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Embodiment 1
[0035] 1.1 Sample collection
[0036] Inbreeding adult Macrobrachium rosenbergii populations in Guangxi, 200 tails, provided by the National (Nanning, Guangxi) Macrobrachium rosenbergii Breeding Center, cultured for 4 months in the laboratory breeding pond (5×5×1.8m) of the Fine Breeding Center, based on color, Behavior, growth characteristics and serrated claws are divided into three different morphological types of male shrimps: blue long arm type (BCM), orange long arm type (OCM) and small body type (SM). There were 50 tails for each of the 3 morphotypes, and a total of 150 tails were collected. The body weights of BCM, OCM, and SM were 14.48±1.05g, 10.04±1.15g, and 5.86±0.66g, respectively.
[0037] 1.2 DNA extraction
[0038] The genomic DNA of the abdominal muscle tissue of Macrobrachium rosenbergii was extracted according to the steps of the Wizard Genomic DNA Purification Kit (purchased from Promega, USA), and the absorbance (OD) of the extract at 260nm and 280nm was ...
Embodiment 2
[0049] [Example 2] Results and Analysis
[0050] 2.1 Population genetic diversity
[0051] It can be seen from Table 2 that, except for SM locus 5, the genetic information of other loci is polymorphic, and this locus should be removed in all statistical analysis. The male shrimp populations of the three morphotypes showed high genetic differences. The allele numbers of BCM, OCM, and SM were 2.885, 3.762, and 2.627, respectively, and the observed heterozygosity were 0.5561, 0.474, and 0.475, respectively. The exact deviation value (P) of the Hardy-Weinberg equilibrium law was estimated using the Markov chain method and subsequently corrected by the Bonferroni multiple hypothesis experiment. The results showed that most loci were significantly shifted.
[0052] Table 2 Genetic diversity of satellite loci in male Macrobrachium rosenbergii of three morphotypes
[0053]
[0054] G: gene copy number, A: allele number, H o : observed heterozygosity, H e : Expected heterozygos...
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