A method for breeding high-yielding winter wheat using stalk characteristics

A winter wheat, high-yield technology, applied in the field of genetics and breeding, can solve problems such as dwarfing varieties, and achieve the effects of high accuracy, convenient rapid selection, and easy accurate selection.

Active Publication Date: 2018-10-30
CROP RES INST SHANDONG ACAD OF AGRI SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction of plant height plays an important role in improving the harvest index and enhancing lodging resistance, but it does not mean that the shorter the plant, the higher the harvest index, and there is a limit to the variety dwarfing

Method used

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  • A method for breeding high-yielding winter wheat using stalk characteristics
  • A method for breeding high-yielding winter wheat using stalk characteristics
  • A method for breeding high-yielding winter wheat using stalk characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 Field Planting of Typical Varieties

[0029] 25 typical varieties that were popularized and planted on a large scale during the eight varieties replacements in Shandong Province since the founding of the People's Republic of China were selected as test materials (Table 1). The experiment was planted in Taian, Dezhou, and Heze for two years in 2010-2011 and 2011-2012 respectively, arranged in random blocks and repeated 3 times. Field management measures are carried out according to general high-yield fields.

[0030] Table 1 Typical varieties of wheat in Shandong Province since the founding of the People's Republic of China

[0031]

[0032]

Embodiment 2

[0033] The investigation of embodiment 2 agronomic traits

[0034] The investigation and determination of material yield and important agronomic traits refer to the Agricultural Industry Standard of the People's Republic of China "Technical Regulations for Regional Tests of Crop Varieties Wheat" (NY / T 1301-2007). After the seedlings turn green, set up nylon nets in time to prevent lodging, so as to give full play to the yield potential of each variety.

[0035] Determination of stem internode length, internode diameter, and internode weight: strip off the stem sheath, measure the stem internode length, stem diameter, and internode weight with a ruler, vernier caliper, and balance.

Embodiment 3

[0036] Example 3 Analysis of the evolution of stem characteristics in the process of Shandong wheat variety replacement

[0037] It can be seen from Table 2-5 that since the founding of the People's Republic of China, the length of each internode of the wheat varieties popularized in Shandong Province has shown a downward trend, the internode diameter has gradually increased, and the internode weight has increased except the dry weight of the lower node. In addition, other sections showed a gradual downward trend. The shortening of the internode length is mainly due to the application of the dwarf gene in wheat varieties. Compared with the early varieties, the length of the lower node, the second node, the third node, the fourth node, and the fifth node of the modern variety are reduced by 31.5% and 35.8%, respectively. %, 49.5%, 50.6%, 29.8%. In recent years, the plant height of varieties planted on a large scale in Shandong Province has remained between 70-85cm. From the pe...

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Abstract

The invention belongs to the field of genetic breeding and particularly relates to a method for breeding high-yield winter wheat by stalk characteristic. The method comprises the steps: carrying out hybridizing by selecting the high-yield winter wheat as parent plants so as to obtain a hybrid F1; selecting single plants from a hybrid F2 to a hybrid F5 according to the ratio of spike length to spike-below internode length to backwards-counting second internode length, spike-below internode outside diameter and backwards-counting fourth internode outside diameter; selecting single plants from a hybrid F6 to a hybrid F7 according to the standards above and spike-below internode dry weight; and selecting single plants from a hybrid F8 according to the standards above and grain yield. The method is applicable to Huanghuai wheat areas and is simple and accurate.

Description

technical field [0001] The invention belongs to the field of genetic breeding, and in particular relates to a method for breeding high-yield winter wheat by utilizing stem characteristics. Background technique [0002] Wheat is one of the most important food crops in the world, its yield is second only to rice and corn, and it is the third largest food crop in my country. Wheat is one of the most important food crops because it feeds 40% of the world's population and provides 20% of human energy and protein supply. [0003] Increases in wheat grain yield potential in modern times are mainly manifested by increases in harvest index, from 30-35% in early landraces to 40-50% in modern high-yielding varieties, with little change in biological yield. To further increase yield mainly depends on the coordinated improvement of harvest index and biological yield. Foreign scholars divide the varieties into three types according to the harvest index and biological yield: the first ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 余晓丛宋健民李豪圣刘爱峰程敦公曹新有王灿国郭军孙正娟刘建军赵振东
Owner CROP RES INST SHANDONG ACAD OF AGRI SCI
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