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Breeding method using multispikelet germplasm NAU422 for improvement of wheat yield

A germplasm, wheat technology, applied in the direction of plant genetic improvement, botanical equipment and methods, biochemical equipment and methods, etc., can solve problems such as the narrow genetic foundation of wheat

Active Publication Date: 2015-07-08
NANJING AGRICULTURAL UNIVERSITY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after nearly a hundred years of genetic improvement, the genetic basis of cultivated wheat has become increasingly narrow, which has become a major bottleneck for further improvement of wheat yield.

Method used

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  • Breeding method using multispikelet germplasm NAU422 for improvement of wheat yield
  • Breeding method using multispikelet germplasm NAU422 for improvement of wheat yield
  • Breeding method using multispikelet germplasm NAU422 for improvement of wheat yield

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Experimental program
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Embodiment 1

[0021] (1) Design primers based on the EST sequence located in the second part of the common wheat homology group, and screen and identify the co-dominant molecular markers of the T2VS·2DL translocation chromosome

[0022] Using the EST sequence of wheat (http: / / wheat.pw.usda.gov / cgi-bin / westsql / map_locus.cgi) to design PCR primers, a co-dominant marker Xcinau2VS-1, (XCINAU2VS-1F: AGAAACTGGTGCTCAACCTA(SEQ ID NO.1), XCINAU2VS-1R:AACTTTTGCTTCTCATCTCG(SEQ ID NO.2)); T2VS·2DL translocation line NAU422 can amplify the specific band of 2VS 750bp, but lacks the specific band of wheat 2DS 900bp (Table 1, figure 2 ).

[0023] Table 1 Co-dominant molecular markers for the identification of T2VS·2DL translocation line NAU422 of common wheat-P.

[0024]

[0025] (2) Analysis of the agronomic characters of the T2VS·2DL translocation line NAU422 of common wheat-P.

[0026] In order to understand the effect of the translocation chromosome on the main agronomic traits and reveal the ut...

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Abstract

The invention discloses a breeding method using multispikelet germplasm NAU422 for improvement of wheat yield. Common wheat Chinese spring-haynaldia villosa T2VS.2DL translocation line NAU422 is compensatory whole arm translocation line, is stable in inheritance, carries excoemum morphological marker Bgr-V1, and by use for molecular breeding, spikelet number and number of grains per panicle can be significantly improved, and high-yielding new wheat line is easy to breed.

Description

technical field [0001] The patent of the invention discloses a breeding method for improving wheat yield by utilizing the multi-spikelet germplasm NAU422, which belongs to the technical field of plant breeding. Background technique [0002] Wheat is an important food crop in the world, and the genetic improvement of its yield traits has always been valued by major wheat producing countries. The number of panicles per unit area, the number of grains per panicle and the weight of thousand grains are the basic elements that constitute the yield per unit area of ​​wheat. Long-term breeding practice has shown that it is easier to increase the yield level by increasing the number of grains per panicle. However, after nearly a hundred years of genetic improvement, the genetic basis of cultivated wheat has become increasingly narrow, which has become the main bottleneck for further improvement of wheat yield. There are many gene loci that are beneficial to yield in the close relati...

Claims

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Application Information

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IPC IPC(8): A01H5/10A01H1/02A01H1/04C12Q1/68
CPCY02A40/10
Inventor 张瑞奇冯祎高陈佩度
Owner NANJING AGRICULTURAL UNIVERSITY
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