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A method to solve the flowering failure of the distant hybridization of sorghum male sterile line and sudangrass

A technology of non-meeting flowering and distant hybridization, applied in horticultural methods, botany equipment and methods, lawn growth, etc. Distant hybridization of sudangrass does not meet the problem of flowering period, and achieves the effect of solving the phenomenon of hybrid species failure, promoting the exchange of genetic resources, and achieving precise results

Active Publication Date: 2022-03-29
DRY LAND FARMING INST OF HEBEI ACAD OF AGRI & FORESTRY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention proposes a method to solve the problem that the flowering period of the sorghum sterile line and the distant hybridization of sudan grass cannot be precisely adjusted in the prior art.

Method used

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  • A method to solve the flowering failure of the distant hybridization of sorghum male sterile line and sudangrass
  • A method to solve the flowering failure of the distant hybridization of sorghum male sterile line and sudangrass

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Embodiment 1

[0025] In 2018, at the Experimental Station of the Dry Farming Agriculture Research Institute of the Hebei Academy of Agriculture and Forestry Sciences, the self-selected sorghum male sterile line H1076A and Sudan grass HS-722 were used as test materials and sowed at the same time on May 16. By observing their normal growth process It was found that the flowering period of H1076A is expected to be 14 days earlier than that of HS-722, and cross-pollination at the flowering period cannot be carried out normally. The adjustment measures are: on July 4, when the sorghum male sterile line 1076A reaches the earing stage, mow at the place 2cm above the angle between the main stem of H1076A and the penultimate leaf. Heading again on August 5th, reached the full flowering stage on August 5th, and at this time the sudan grass HS-722 tiller ears were in the full flowering stage, so as to achieve the purpose of meeting the flowering stage, and the hybrid combination configuration went smoo...

Embodiment 2

[0030] In 2018, at the Experimental Station of the Dry Farming Agriculture Research Institute of the Hebei Academy of Agriculture and Forestry Sciences, the self-selected sorghum male sterile line BMR14A and sudangrass BMR-S145 were used as test materials and sowed at the same time on May 16. By observing their normal growth process It was found that the flowering period of BMR-S145 is expected to be 8 days earlier than that of BMR14A, so the spike flowering stage of the main stem of Sudangrass and the sorghum CMS line cannot meet. On March 20th, when Sudan grass BMR-S145 reached the heading stage, the main stem of BMR-S145 was mowed in time, and all the main stems of BMR-S145 were mowed at a distance of 15 cm from the ground to stimulate the accelerated growth of tiller ears, and the tiller ears were at It reached the full flowering stage on August 4, and at this time the sorghum male sterile line BMR14A was about to reach the full flowering stage, the flowering stage met, and...

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Abstract

The present invention relates to the technical field of forage variety breeding, and proposes a method for solving the problem of flowering of sorghum sterile lines and Sudan grass distant hybrids, inducing new branch ears by cutting the main stems of sorghum sterile lines, and using Branches and spikes bloom and meet at the flowering stage; or through mowing all the main stems of Sudan grass to induce the rapid growth of tiller panicles, the new method of using tiller spikes to flower and reaching the flowering stage can be directly applied to sorghum male sterile lines and Sudan grass. The adjustment of flowering period sterility during edge hybridization solves the problem in the prior art that the flowering period of the sorghum sterile line and Sudangrass distant edge hybridization cannot be precisely adjusted.

Description

technical field [0001] The invention relates to the technical field of herbage variety selection and breeding, and relates to the hybridization and breeding technology of Sorghum grass parents, in particular, to a method for solving the failure of the flowering period of the distant hybridization of sorghum male sterile line and Sudan grass. Background technique [0002] Distant hybridization is of great significance in the field of breeding. By using distant hybridization, biological evolution and kinship can be studied, and the law of species development can be proved; by using distant hybridization, exogenous genetic material can be used to enrich the genetic basis of species, and new species can be created, such as Sorghum-Sudangrass hybrid (Sorghum grass). Sorghum bicolor×Sorghum sudanense is a distant hybrid of Sorghum bicolor (L.) Moench and Sudan grass (Sorghum sudanense (Piper) Stapf.). Sorghum and Sudan grass belong to It is still controversial whether different s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/20A01G20/00A01G7/06
CPCA01G22/20A01G20/00A01G7/06
Inventor 李源游永亮赵海明武瑞鑫刘贵波彭海成
Owner DRY LAND FARMING INST OF HEBEI ACAD OF AGRI & FORESTRY SCI
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