39results about How to "Easy to expand and stable" patented technology

The invention discloses a molecular marker SSR52 closely linked with the wheat oligo-tiller gene Ltn3, the nucleotide sequence of which is shown in SEQ ID No.1, and the genetic distance between the molecular marker and the wheat oligo-tiller gene Ltn3 is 0.3cM. Detection and analysis show that the molecular marker can accurately track the wheat oligo-tiller gene, predict the tiller characteristics of wheat, and facilitate molecular design breeding. The invention also discloses a method for identifying the molecular marker of the wheat oligo-tiller gene Ltn3. The method provided by the invention can enhance the accuracy of tiller prediction, improve the success rate of specific plant type breeding, and accelerate the realization of the goal of increasing wheat yield per unit area .

The invention discloses a molecular marker HRM5 closely linked with the wheat oligo-tiller gene Ltn3, the nucleotide sequence of which is shown in SEQ ID No.1, and the genetic distance between the molecular marker and the wheat oligo-tiller gene Ltn3 is 0.35cM. Detection and analysis show that the molecular marker can accurately track the wheat oligo-tiller gene, predict the tiller characteristics of wheat, and facilitate molecular design breeding. The invention also discloses a method for identifying the molecular marker of the wheat oligo-tiller gene Ltn3. The method provided by the invention can enhance the accuracy of tiller prediction, improve the success rate of specific plant type breeding, and accelerate the realization of the goal of increasing wheat yield per unit area .

The invention discloses a KASP molecular marker linked with wheat flag leaf long QTL QFll‑2B and an application thereof. The molecular marker is located on the long arm of chromosome 2B of the RefSeqv1.0 genome. Detection and analysis show that the molecular marker can accurately track the wheat flag leaf length QTL QFll-2B, predict the flag leaf length characteristics of wheat, and facilitate molecular breeding. The invention also discloses a method for identifying the molecular marker of the wheat flag leaf length QTL QFll-2B. The method provided by the invention can enhance the accuracy of the prediction of the flag leaf length, and can more quickly screen out those with longer flag leaves. Wheat varieties or strains are used for breeding, which greatly speeds up the process of wheat breeding.

The invention discloses a SNP molecular marker linked with wheat grain length QTL and its application, belonging to the field of crop molecular genetics and breeding; the SNP molecular marker is KASP-KL-sau1, and the polymorphism is C / T; the KASP-KL ‑sau1 co-localizes with the wheat grain length QTL QKL.sau‑1B on the long arm of the wheat 1B chromosome, and the genetic distance between it and the QTL QKL.sau‑1B is 4 cM, and the nucleotide sequence of 35bp before and after it is shown in SEQ ID NO: 31. The KASP-KL-sau1 disclosed in the present invention is extremely significantly correlated with the grain length QTL QKL.sau-1B, presents the characteristics of closely linked markers, has high accuracy for molecular marker-assisted selection, and can significantly improve the long-grain varieties of wheat. The selection and identification efficiency is high, and the success rate is high. While improving the efficiency of breeding work, it provides a basis for the study of wheat grain length genes.

The invention relates to the technical field of molecular biology, in particular to a molecular marker closely linked to wheat ear extraction QTL QPel.HN.6D and its application. The present invention provides a molecular marker closely linked to wheat ear extraction QTL QPel.HN.6D, the nucleotide sequence of which is shown in SEQ ID NO.1; molecular marker HRM6 is located at the end of wheat ear extraction QTL QPel.HN.6D Within the confidence interval, the two co-localized on wheat chromosome 6D. The molecular marker can accurately track the wheat panicle withdrawal QTL QPel.HN.6D, predict the characteristics of wheat panicle withdrawal, facilitate molecular design and breeding, and enhance the accuracy of ear withdrawal prediction, so as to quickly screen out QTLs with reduced panicle withdrawal Wheat varieties or strains are used for breeding, which can greatly speed up the breeding process of high-yielding wheat varieties with ideal plant types.

The present invention provides a molecular marker closely linked with the wheat grain filling rate QTL QGfr.sicau-6D, the molecular marker is K603, and its nucleotide sequence is shown in SEQ ID NO. 1; the molecular marker K603 is closely related to the wheat grain filling rate The QTLs are tightly linked. Detection and analysis showed that the molecular marker could accurately track the QTL of the grain filling rate of wheat, predict the grain filling rate characteristics of wheat, and then facilitate molecular design breeding. The detection molecular marker K603 can enhance the accuracy of wheat grain filling rate prediction, so that wheat varieties or lines with QTLs that increase grain filling rate can be quickly screened for breeding, which can greatly speed up the breeding process of high-yielding wheat varieties.

The invention discloses a SNP molecular marker related to barley grain β-glucan content and its application. The site of the SNP molecular marker is located at base number 566409962 of chromosome 6 of barley; the SNP base difference is C or T. The present invention discloses for the first time a SNP molecular marker significantly associated with barley grain β-glucan content. The molecular marker is accurate and efficient in detection, convenient and stable in amplification, and can be used for molecular marker-assisted selection to increase barley β-glucan content identification efficiency and accuracy.

The invention discloses a wheat tiller angle QTL QTA‑2B linked molecular marker and its application. The KASP‑sicau1 molecular marker is a SNP molecular marker, and the polymorphism is A / G. It co-localizes with wheat tiller angle QTL QTA‑2B on the long arm of wheat chromosome 2B, and is located in the QTL QTA‑2B interval. The molecular marker KASP-sicau1 disclosed in the present invention is extremely significantly correlated with the tiller angle QTL QTA-2B, presents the characteristics of closely linked markers, has high accuracy for molecular marker-assisted selection, and can significantly improve wheat varieties with larger tiller angles adapted to different environments The selection and identification efficiency is high, and the success rate is high.

The invention provides a molecular marker for increasing barley harvest index QTL site under low phosphor condition and an application thereof. The molecular marker is Hvc316, a nucleotide sequence isshown as SEQ ID No:1, the molecular marker is positioned on barley 3H chromosome, and can accurately track the site for increasing a barley harvest index QTL under low phosphor condition, predicts the harvest index characteristic of the barley under the low phosphor condition, and is convenient for molecular design breeding with nutrient efficient utilization. The invention also provides the application of the molecular marker Hvc316 in barley high-yield nutrient efficient breeding. A method provided in the invention is capable of enhancing the accuracy of prediction of the barley harvest index under low phosphor condition, and is convenient for rapidly screening the barley variety or lines used for breeding for increasing the barley harvest index QTL under low phosphor condition, so thata seed selection process of the barley high-yield high-efficiency variety can be greatly accelerated.

The invention discloses a KASP-Flw-sau6198 molecular marker linked with the main effect QTL of wheat flag leaf width and its application, belonging to the fields of molecular biology and crop genetics and breeding. The molecular marker is a SNP molecular marker, and the polymorphism is A / G, which co-localizes with the wheat flag leaf width QTL QFLW.sau-AM-4B.4 on the long arm of the tetraploid wheat chromosome 4B, and is located in the QTL QFLW .sau‑AM‑4B.4 range. After detection and analysis, it is shown that the molecular marker can accurately track the flag leaf width QTLQFLW.sau‑AM‑4B.4 of wheat, and predict the flag leaf width characteristics of wheat, which is conducive to more rapid screening of wheat varieties or lines with wider flag leaves For breeding, greatly speed up the process of wheat breeding.