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A breeding method of improving powdery mildew resistance of weak gluten wheat Ningmai-9 by utilization of backcrossing

A technology for resistance to powdery mildew and powdery mildew, applied in the direction of plant genetic improvement, botanical equipment and methods, application, etc. Effect

Inactive Publication Date: 2014-10-29
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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Problems solved by technology

[0003] The biggest disadvantage of Ningmai No. 9 is that it is susceptible to powdery mildew

Method used

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  • A breeding method of improving powdery mildew resistance of weak gluten wheat Ningmai-9 by utilization of backcrossing

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Embodiment Construction

[0019] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] A breeding method for improving resistance to powdery mildew of weak gluten wheat Ningmai No. 9 by backcrossing, comprising the following steps:

[0021] In the spring of 1997, Ning 9312 (later named Ningmai No. 9) was used as the female parent, and Yang 93-111 (later named Yangmai No. 10) carrying the powdery mildew resistance gene Pm4a was used as the male parent to prepare a hybrid. The hybrid ( No. A106), in the spring of 1998 and 1999, a disease-resistant single plant was selected for two consecutive years and then backcrossed with Ningmai No. 9 twice. In the summer of 2000, the backcrossed seeds were mixed and harvested, and the BC will be backcrossed in the autumn of that year 2 f 1 Seed into BC 2 f 2 (No. B270), 400 single ears were selected when mature, mixed and threshed, and planted into ...

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Abstract

A breeding method of improving powdery mildew resistance of weak gluten wheat Ningmai-9 by utilization of backcrossing is disclosed. According to the method, the Ningmai-9 with high excellent-character combining ability and high genetic transmitting ability is adopted as a recurrent parent, Yangmai-10 carrying a powdery mildew resistant Pm4a gene is adopted as a nonrecurrent parent, and through hybridization and limited backcrossing assisted by generation selection of powdery mildew resistance, agronomic characters and quality characters, Ning0556, Ning0564, Ning0569, and the like which are new wheat strains with good yielding ability and high powdery mildew resistance are bred. Through identification of yielding ability, adaptability, disease resistance, quality, and other characters, the Ning0569 is the most prominent. The Ning0569 is subjected to wheat pilot experiments of the national middle and lower Yangtze river winter wheat group and the Jiangsu province Huainan group respectively, ranks the first of the two groups with respect to yield, and is named as Ningmai-18 by Jiangsu province and the national approval. The Ningmai-18 has advantages of high resistance to powdery mildew and high acre yield, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of crop breeding methods, and relates to a breeding method for improving resistance to powdery mildew of weak-gluten wheat Ningmai No. 9 by backcrossing. Background technique [0002] Ningmai No. 9 is a high-quality, high-yielding and weak-gluten wheat variety bred by Jiangsu Academy of Agricultural Sciences. This variety passed the examination and approval of Jiangsu Province in 1997. The outstanding advantages of Ningmai No. 9 are manifested in the following three aspects: First, the quality of weak gluten is stable, and it is recognized as one of the best weak gluten wheat varieties in the country. Wheat; second, high and stable yield, Ningmai No. 9 in the two-year regional test in Jiangsu Province, the average yield increased by 10.7% compared with the control; third, high resistance to wheat yellow mosaic disease, moderate resistance to scab, and good moisture resistance. In 2006, the largest promotion...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 姚金保马鸿翔杨学明周淼平杨丹
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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