Method for breeding two-line sterile lines of silage upland rice

A technology of silage and sterile lines, which is applied in the field of special rice breeding, can solve the problems of insufficient breeding research, late feed rice research work, and increased difficulty of breeding work, achieving scientific and efficient breeding methods Ease of operation and high output

Inactive Publication Date: 2016-07-13
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

[0031] （1） Parent selection: Choose "Xiangzaoxian No. 24" as the basic parent (P), "Zhongkui B" (P1), "Southeast 201" (P2), "Zhonghan 3" (P3) as the general parents, Short 64S” (P4) as the reincarnation parent;

[0032] （2） Planting and hybrid offspring selection:

[0033] a. Plant parents P, P1, P2, P3, P4, and cross P×P1→F during flowering 1-1 , P×P2→F 1-2 , P×P3→F 1-3 ; Plant hybrid F 1 Generation F 1-1 , F 1-2 , F 1-3 And parent P, cross P×F during flowering 1-1 , P×F 1-2 And F 1-3 ×P, get back to F 1 Generation BF 1-1 , BF 1-2 And BF 1-3 ;

[0034] b. Plant BF 1-1 , BF 1-2 , Hybrid BF during flowering 1-1 ×BF 1-2 →BF 1-12 ; Plant BF 1-12 And BF 1-3 , Hybrid BF during flowering 1-3 ×BF 1-12 →BF 1-123 ; Plant BF 1-123 Get BF 2-123 ;

[0035] c. Sparse BF on dry land 2-123 After sowing, spray water once, and do not water the whole seedling period. After 28 days from the seedling period, the seedlings will be screened for drought resistance to remove seedlings with poor tillering pow...

Embodiment 2

[0043] （1） Parent selection: "Jinzao 47" as the basic parent (P), "Zhongkui B" (P1), "Southeast 201" (P2), "Huhan 3" (P3) as the general parent, "Fu eS1" ( P4) Be the reincarnation parent;

[0044] （2） Planting and hybrid offspring selection:

[0045] a. Plant parents P, P1, P2, P3, P4, and cross P×P1→F during flowering 1-1 , P×P2→F 1-2 , P×P3→F 1-3 ; Plant hybrid F 1 Generation F 1-1 , F 1-2 , F 1-3 And parent P, cross P×F during flowering 1-1 , P×F 1-2 And F 1-3 ×P, get back to F 1 Generation BF 1-1 , BF 1-2 And BF 1-3 ;

[0046] b. Plant BF 1-1 , BF 1-2 , Hybrid BF during flowering 1-1 ×BF 1-2 →BF 1-12 ; Plant BF 1-12 And BF 1-3 , Hybrid BF during flowering 1-3 ×BF 1-12 →BF 1-123 ; Plant BF 1-123 Get BF 2-123 ;

[0047] c. Sparse BF on dry land 2-123 After sowing, spray water once, and do not water the whole seedling period. After 28 days from the seedling period, the seedlings will be screened for drought resistance to remove seedlings with poor tillering power and weak plant stal...

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Abstract

The invention discloses a method for breeding two-line sterile lines of silage upland rice and belongs to the technical field of breeding of special rice.A high-yield high-crude-protein-content forage rice variety is used as a basic parent, brittle-culm rice variety, grain-stalk dual-use rice variety with high straw protein content, high-yield upland rice variety and a two-line sterile line are used a common parent, a forage upland rice two-line sterile line that is suitable for dry farming cultivation, high in yield and nutrition and capable of serving as silage is bred through scientific hybrid matching and target character screening, and this sterile line can be matched with a restoring line of same type to breed high-yield high-nutrition two-line hybrid upland rice variety capable of providing grain as forage and culms as silage.The method is scientific and efficient, is easy to perform and is significant to the breeding of hybrid silage upland rice varieties.

Description

technical field [0001] The invention specifically relates to a method for selecting a two-line sterile line of upland rice for silage, and belongs to the technical field of special rice breeding. 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 better meat taste. The cost of fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/04A01H1/02
CPCA01H1/02A01H1/04
Inventor 章清杞陈幼玉张云燕施晓棠李晓燕杨帆
Owner FUJIAN AGRI & FORESTRY UNIV
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