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A kind of breeding method of upland rice two-line sterile line

A sterile line and feeding technology, which is applied in the field of breeding two-line male sterile line of upland rice for feeding, can solve the problems of increased difficulty in breeding work, late research work on feed rice, and insufficient breeding research.

Inactive Publication Date: 2018-01-12
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the late research work on feed rice, breeding research is not carried out enough, and there is a lack of theoretical guidance in breeding, which increases the difficulty of breeding.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Parent selection: the forage rice variety "Jinzao 47" with high yield, brown rice crude protein content greater than 12%, and brown rice yield greater than 80% was selected as the basic parent (P), and the grain-stalk dual-purpose rice variety "Dongnan 202" ( P1), the high-yield and stress-resistant upland rice variety "Huhan 7" (P2) was used as the general parent, and the two-line maintainer "Peiai 64S" (R) was used as the recurrent parent;

[0035] (2) Planting and selection of hybrid offspring:

[0036] a. Plant the parents P, P1, P2 and R respectively, and make crosses P×P1→F at the flowering stage 1-1 , P×P2→F 1-2 , R×P→F 1-3 ; Separately plant hybrid F 1 Generation F 1-1 , F 1-2 , F 1-3 Cross P×F with parent P at flowering stage 1-1 , P×F 1-2 and F 1-3 ×P, get backcross F 1 Generation BF 1-1 , BF 1-2 and BF 1-3 ;

[0037] b. Plant BF separately 1-1 , BF 1-2 and BF 1-3 , as hybrid BF at flowering stage 1-1 ×BF 1-2 →BF 1-12 , BF 1-3 Harvest ...

Embodiment 2

[0050] (1) Parental selection: the forage rice variety "Xiangzaoxian 24" with high yield, brown rice crude protein content greater than 12%, and brown rice yield greater than 80% was selected as the basic parent (P), and the grain-stalk dual-purpose rice variety "Dongnan 202" was selected as the basic parent (P). "(P1), the high-yielding and stress-resistant upland rice variety "Linhan 1" (P2) was used as the general parent, and the two-line maintainer "Fu eS1" (R) was used as the recurrent parent;

[0051] (2) Planting and selection of hybrid offspring:

[0052] a. Plant the parents P, P1, P2 and R respectively, and make crosses P×P1→F at the flowering stage 1-1 , P×P2→F 1-2 , R×P→F 1-3 ; Separately plant hybrid F 1 Generation F 1-1 , F 1-2 , F 1-3 Cross P×F with parent P at flowering stage 1-1 , P×F 1-2 and F 1-3 ×P, get backcross F 1 Generation BF 1-1 , BF 1-2 and BF 1-3 ;

[0053] b. Plant BF separately 1-1 , BF 1-2 and BF 1-3 , as hybrid BF at flowering s...

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Abstract

The invention discloses a breeding method of a forage-use dry rice dual-purpose genic male sterility line, and belongs to the technical field of special rice breeding. The high-yield and high-crude-protein-content forage-use rice species is selected as the basic parent, the dual-purpose rice species with straw suitable for being used as fodder and the high-yield and strong-stress-resistance dry rice species are used as general parents, the dual-purpose maintaining line serves as a recurrent parent, the dry-cultivation, high-yield and high-nutrient dual-purpose mixed fodder rice dual-purpose genic male sterility line can be bred through scientific cross matching and targeted screening, the genic male sterility line is matched with a recovery line of the same type, and the high-yield and high-nutrient dual-purpose mixed fodder dual-purpose hybrid rice species can be bred. The method is scientific, efficient and easy to operate and has great significance in breeding the hybrid forage-use dry rice species.

Description

technical field [0001] The invention belongs to the technical field of special rice breeding, and in particular relates to a method for breeding two-line sterile lines of upland rice for forage. Background technique [0002] Feed rice refers to the use of optimized cultivation on the basis of suitable growth period and strong resistance, which can achieve high yield (more than 550 kg per 667 square meters), high protein content, high roughness rate (not less than 80%) and suitable for Rice varieties for feeding. "High-protein feed rice" requires that the crude protein content of brown rice is greater than or equal to 12%. The breeding and promotion of "high-protein feed rice" will not only alleviate the problem of early indica rice that is difficult to sell due to poor taste, but also realize the use of feed rice in southern regions. The idea of ​​brown rice replacing feed corn. Pigs fed with feed rice have improved disease resistance and good meat taste, and the feeding c...

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 章清杞陈幼玉王和寿朱海彬郑长林
Owner FUJIAN AGRI & FORESTRY UNIV