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A method and its application for promoting cross flowering encounter of parents of different varieties of wheat

A technology of meeting flowering and wheat, which is applied in the field of promoting the meeting of different varieties of wheat parents in hybrid flowering, can solve problems such as difficult to grasp the period of sowing, regulating the limited number of parents, affecting the efficiency of hybrid breeding, etc., to improve controllability, efficiency and cost. Low, labor-saving effect

Inactive Publication Date: 2020-02-11
漯河市农业科学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, staged sowing is labor-intensive, time-consuming, and land-consuming. It requires a lot of manual multi-stage sowing. At the same time, it is not easy to grasp the sowing period. It is very likely that the parents of staged sowing will not match the flowering period of the target parent, and the number of adjusted parents is limited, which affects hybrid breeding. The efficiency; adjust the wheat flowering period by adjusting the light and temperature, need special test equipment, and the operation is cumbersome, not suitable for operation control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a method for crossing flowering stages of different varieties of wheat parents, and the specific steps are as follows:

[0030] 1) Divide the parents for hybridization into four regions, I, II, III, and IV, and sow in mid-October. The sowing row length is 4m, the plant spacing is 5~7cm, and the row spacing is 20~25cm. ;

[0031] 2) Cutting wheat seedlings: in mid-January, keep the wheat seedlings in area I, and cut the wheat seedlings in area II, III, and IV for the first time at a distance of 3-5 cm from the ground, and keep the underground part of the wheat seedlings and the stem part of the ground 3-5 cm ; In mid-February, keep the wheat seedlings in Zones I and II, cut the wheat seedlings in Zones III and IV at a distance of 3-5cm from the ground for the second time, and keep the underground part of the wheat seedlings and the stem part of 3-5cm above the ground; in March In the middle ten days, keep the wheat seedlings in Zone I, II and II...

Embodiment 2

[0033] This embodiment provides the application of a method of cross-flowering encounter of different varieties of wheat parents in cross-breeding, including the following steps:

[0034] 1) Plant Yangmai 158, Zhoumai 22, Aikang 58, Yumai 158 and Laizhou 137 according to the method described in Example 1;

[0035] 2) The wheat in Yangmai 158Ⅱ area and Zhoumai 22Ⅰ area met at the left flowering stage on April 22. At this time, the wheat in Yangmai 158Ⅱ area was used as the male parent, and the wheat in Zhoumai 22Ⅰ area was used as the female parent. Male parent for pollination hybridization; or Yangmai 158 Ⅱ area wheat as female parent, Zhoumai 22 Ⅰ area wheat as male parent, female parent emasculated and male parent for pollination hybridization

[0036] Wheat in Zone III of Yangmai 158 and wheat in Zone I of Yumai 158 met at flowering around April 25. The wheat in Zone III of Yangmai 158 was used as the male parent, and the wheat in Zone I of Yumai 158 was used as the female ...

Embodiment 3

[0042] This example provides the application of a method of cross-flowering meeting of parents of different varieties of wheat in hybrid breeding. The difference from Example 2 is that step 2) also includes taking Yangmai 158I district wheat as the male parent and dwarf kang 58I district wheat as the male parent. Wheat is the female parent, and when the male parent grows to the early stage of heading and flowering, select the male parent's wheat ears whose anthers of the small flowers and male flowers in the middle of the ears turn yellow, and cut off the ears of wheat along the base of the male parent's stem at 1-2 cm, and store them in a container. There is a container with clear water, put it in a cool place, and spray water mist to keep it moist, so that the male parent and the female parent will bloom simultaneously, and the artificial pollination of the male parent and the female parent will be carried out.

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Abstract

The invention relates to the technical field of cross breeding and particularly discloses a method for improving parental hybridization flower synchronization of different varieties of wheat and application thereof. The method comprises the steps: a same parental variety is divided and sowed in four areas of a first area, a second area, a third area and a fourth area; wheat seedlings in the first area are retained in a wheat wintering period, and the wheat seedlings in the second area, the third area and the fourth area are cut for a first time in the distance of 3 to 5cm to the ground; the wheat in the first area grows to a seedling establishment period, the wheat seedlings in the first area and the second area are retained, the wheat seedlings in the third area and the fourth area are cut for a second time in the distance of 3 to 5cm to the ground; the wheat in the first area grows to an initial stage or an early-middle stage of a elongation stage, the wheat seedlings in the first area, the second area and the third area are retained, and the wheat seedlings in the fourth area are cut for a third time in the distance of 5 to 8cm to the ground. The parents processed by the method have for different and relatively-coherent flower seasons and can be applied to different hybridization plans, and the method can enable the flower seasons of the parents originally with flower asynchronism to be in flower synchronization, completely depends on the natural environment, avoids extra test equipment and is easy to operate and low in cost.

Description

technical field [0001] The invention relates to the technical field of crossbreeding, in particular to a method for promoting cross flowering encounters between different varieties of wheat parents and its application. Background technique [0002] Hybrid breeding is a method of combining the excellent characters of two or more varieties through mating, and then selecting and cultivating them to obtain new varieties. Hybridization can recombine the genes of the parents to form various types. The excellent genes controlling different traits are combined into one body, or the different genes controlling the same trait in both parents are accumulated to produce a type that surpasses the parents in this trait, so as to achieve the purpose of cross breeding new varieties. Hybridization between varieties of different ecological types is powerful for introducing new good genes and expanding genetic variation, so that new good varieties are of great significance in the field of bree...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/20A01G7/06A01H1/02
CPCA01G7/06A01G22/00A01H1/02
Inventor 张锋张中州赵永涛姬小玲袁谦甄士聪齐晓红薛国典
Owner 漯河市农业科学院
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