CN110447530B - Breeding method of light green leaf three-line sterile line, indica-japonica intermediate restorer line and indica-japonica subspecies hybrid rice - Google Patents
Breeding method of light green leaf three-line sterile line, indica-japonica intermediate restorer line and indica-japonica subspecies hybrid rice Download PDFInfo
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Abstract
The application relates to the field of hybrid rice breeding, in particular to a breeding method of light green leaf three-line indica-japonica subspecies hybrid rice and breeding methods of a sterile line and an indica-japonica intermediate restorer line. The first purpose of the application is to provide a breeding method of light green leaf three-line indica-japonica subspecies hybrid rice, and the method can obtain a new three-line indica-japonica subspecies hybrid rice variety with high yield, light green leaf color and good color conversion in later period. The second purpose of the application is to provide a breeding method of the light green leaf three-line sterile line, which breeds the light green leaf three-line sterile line with stable sterile property, good flowering habit, high outcrossing maturing rate and excellent plant leaf morphology. The third purpose of the application is to provide a breeding method of the light green leaf indica-japonica intermediate restorer line, and the light green leaf indica-japonica intermediate restorer line with good leaf morphology, excellent agronomic characters and good restoration performance is bred by the method.
Description
Technical Field
The application relates to the field of hybrid rice breeding, in particular to a light green leaf three-line sterile line, an indica-japonica intermediate restorer line and a breeding method of hybrid rice between indica-japonica subspecies.
Background
In recent years, hybrid rice is widely planted in China, large-area popularization of the hybrid rice is mainly benefited by the utilization of heterosis, and the yield of the hybrid rice is obviously higher than that of conventional rice varieties. In terms of the utilization degree of heterosis, the heterosis of hybrid rice between indica subspecies and japonica subspecies is obviously stronger than that of indica cross or japonica cross, so that the yield increasing potential is huge. However, most of the hybrid rice between indica and japonica subspecies has long growth period, and has the problems of green late maturity and later turning color difference, which is not beneficial to the popularization and planting of the hybrid rice between indica and japonica subspecies. Under the background, the breeding method of the light green leaf three-line indica-japonica intersubspecific hybrid rice is invented for breeding the light green leaf three-line indica-japonica intersubspecific hybrid rice with good color change at the later stage, so that the problems of greedy late maturity and later-stage color change of the indica-japonica intersubspecific hybrid rice are solved, and the further popularization and application of the indica-japonica intersubspecific hybrid rice are facilitated.
Chinese patent application (publication No. CN1185898A, published: 1998.07.01) this application discloses a breeding method of sterile line of three-line hybrid rice with leaf mark character, it is to use the maintainer line of three-line hybrid rice and the marked rice seed to make hybridization and double crossing, select excellent single plant in F2 to test cross with sterile line respectively, continue to select plant backcross, circulate to the ninth generation to get sterile line with leaf mark character, this seed has unique leaf mark character, has anti-fake function, easy to identify and identify. The method relates to the use of the pale green leaf rice as a marker, and does not solve the problems of late maturity and later color difference of hybrid rice between subspecies of indica rice and japonica rice.
Disclosure of Invention
In order to solve the above technical problems, a first object of the present application is to provide a breeding method of light green leaf three-line indica-japonica subspecies hybrid rice, which can obtain a new three-line indica-japonica subspecies hybrid rice variety with high yield, light green leaf color and good color conversion in the later period.
The second purpose of the application is to provide a breeding method of the light green leaf three-line sterile line, which breeds the light green leaf three-line sterile line with stable sterile property, good flowering habit, high outcrossing maturing rate and excellent plant leaf morphology.
The third purpose of the application is to provide a breeding method of the light green leaf indica-japonica intermediate restorer line, and the light green leaf indica-japonica intermediate restorer line with good leaf morphology, excellent agronomic characters and good restoration performance is bred by the method.
In order to achieve the first object, the following technical solutions are adopted in the present application:
a breeding method of light green leaf three-line indica-japonica subspecies hybrid rice is characterized by comprising the following steps:
1) introducing gene resources of light green leaves into a non-light green leaf sterile line by using light green leaf rice resource materials through a breeding technology to breed a light green leaf three-line sterile line;
2) utilizing a light green leaf rice resource material, introducing a light green leaf gene resource into a non-light green leaf restorer line through a breeding technology, and breeding a light green leaf indica-japonica intermediate restorer line;
3) and (3) preparing a hybrid combination by using the sterile line obtained in the step 1) and the restoring line obtained in the step 2) to obtain a new three-line indica-japonica subspecies hybrid rice variety with high yield, light green leaf color and good color conversion in the later period.
Preferably, the breeding techniques described in step 1) and step 2) include crossing, backcrossing or other breeding techniques in addition to crossing, backcrossing.
Preferably, the light green leaf rice resource material in the steps 1) and 2) is light green leaf indica rice, japonica rice, indica-japonica intermediate type material, wild rice material or light green leaf mutant material of other sources.
Preferably, the non-light green leaf trilinear sterile line of step 1) is any type of sterile line, such as yunnan type I, BT, watery, abortive or manglietia type.
Preferably, the non-light green leaf restorer line of step 2) is a japonica, indica or indica-japonica intermediate restorer line.
Preferably, the breeding method of the light green leaf three-line sterile line in the step 1) comprises the following steps:
1.1) selecting a light green leaf rice resource material as an acceptor or a donor parent;
1.2) crossing the parent with the gene controlling the light green leaves with a non-light green leaves maintainer line;
1.3) selecting a light green leaf single plant with excellent leaf morphology from the separated offspring to harvest seeds;
1.4) planting the light green leaf material obtained in the step 1.3), and continuously selfing for 3-4 generations to obtain a light green leaf maintenance line with excellent plant leaf morphology;
1.5) taking the selected light green leaf maintainer line as a recurrent parent, continuously backcrossing for 3-5 generations by means of hybridization and backcross, and introducing the light green leaf gene into a non-light green leaf three-line sterile line so as to obtain the light green leaf three-line sterile line.
Preferably, the breeding method of the light green leaf indica-japonica intermediate restorer line in the step 2) comprises the following steps:
2.1) selecting a light green leaf indica type, japonica type or indica and japonica intermediate type rice resource material as a receptor parent or a donor parent;
2.2) hybridizing the parent with the controlled light green leaf gene with a restorer of japonica, indica or indica-japonica intermediate varieties;
2.3) selecting a light green leaf single plant with excellent leaf morphology in the separation generation to harvest seeds;
2.4) testing and crossing the rice material obtained in the step 2.3) with different types of sterile lines, measuring the restorability of the sterile lines, and selecting a line with strong restorability and excellent agronomic characters.
Preferably, the bred light green leaf indica-japonica intermediate restorer is an indica-japonica intermediate partial indica or partial japonica restorer.
In order to achieve the second object, the following technical solutions are adopted in the present application:
a method for breeding a light green leaf three-line sterile line comprises the following steps:
1.1) selecting a light green leaf rice resource material as an acceptor or a donor parent;
1.2) crossing the parent with the gene controlling the light green leaves with a non-light green leaves maintainer line;
1.3) selecting a light green leaf single plant with excellent leaf morphology from the separated offspring to harvest seeds;
1.4) planting the light green leaf material obtained in the step 1.3), and continuously selfing for 3-4 generations to obtain a light green leaf maintenance line with excellent plant leaf morphology;
1.5) taking the selected light green leaf maintainer line as a recurrent parent, continuously backcrossing for 3-5 generations by means of hybridization and backcross, and introducing the light green leaf gene into a non-light green leaf three-line sterile line so as to obtain the light green leaf three-line sterile line.
Preferably, the light green leaf rice resource material in the step 1.1) is light green leaf indica rice, japonica rice, wild rice material or mutant material of other sources.
Preferably, the color of the leaves of the light green leaf rice resource material in the vegetative growth period in the step 1.1) is light green and can be distinguished by naked eyes.
Preferably, the non-light green leaf retention in step 1.2) is Yunnan I type, BT type, Yinyi type, Valeriana type or Reynaldia type.
Preferably, the non-light green leaf maintainer line in the step 1.2) has good leaf morphology and excellent agronomic characters.
Preferably, the light green leaf maintainer line of step 1.4) is not isolated and is genetically stable.
Preferably, the non-light green leaf three-line sterile line in the step 1.5) is Yunnan I type, BT type, Yinyi type, Valeriana type or Reynaldia type.
Preferably, the sterile line of the non-light green leaf three-line sterile line in the step 1.5) has stable sterile property, good flowering habit, high outcrossing maturing rate, excellent plant leaf shape, light green leaf color and visible eye identification.
The method selects the rice resource material of the light green leaves as the parent, and breeds the light green leaf three-line sterile line with stable sterile property, good flowering habit, high outcrossing maturing rate and excellent plant leaf morphology by means of technical means such as hybridization, continuous selfing and continuous backcross.
In order to achieve the third object, the following technical solutions are adopted in the present application:
a breeding method of a light green leaf indica-japonica intermediate restorer line comprises the following steps:
2.1) selecting a light green leaf indica type, japonica type or indica and japonica intermediate type rice resource material as a receptor parent or a donor parent;
2.2) hybridizing the parent with the controlled light green leaf gene with a restorer of japonica, indica or indica-japonica intermediate varieties;
2.3) selecting a light green leaf single plant with excellent leaf morphology in the separation generation to harvest seeds;
2.4) testing and crossing the rice material obtained in the step 2.3) with different types of sterile lines, measuring the restorability of the sterile lines, and selecting a line with strong restorability and excellent agronomic characters.
Preferably, the light green leaf rice resource material in the step 2.1) is light green leaf indica rice, japonica rice, indica-japonica intermediate type material, wild rice material or light green leaf mutant material of other sources.
Preferably, the light green leaf rice resource material in the step 2.1) has light green leaf color in the vegetative growth period.
Preferably, the non-light green leaf restorer line of step 2.2) is a japonica, indica or indica intermediate restorer line.
Preferably, the non-light green leaf restorer line strain in the step 2.2) has good leaf morphology, excellent agronomic character and good restoration performance.
Preferably, the restoring line of the indica-japonica intermediate type with light green leaves bred in the step 2.4) is stable in heredity.
Preferably, the restoring line of the indica type and japonica type with light green leaves bred in the step 2.4) can be a restoring line of the indica type and japonica type with middle indica type or with middle japonica type.
The method selects the rice resource material of the light green leaves as the parent, and breeds the light green leaf indica-japonica intermediate restorer line with good leaf morphology, excellent agronomic character and good restoration property by the conventional technical means of hybridization, continuous selfing and the like. The breeding method is suitable for genetic improvement of the existing non-light green leaf restoring line and creation of light green leaf indica-japonica intermediate restoring line materials.
The method selects the rice resource material of the light green leaves as the parent, breeds the light green leaf three-line sterile line and the light green leaf indica-japonica intermediate restoring line with excellent agronomic characters through the conventional hybridization, continuous selfing and other technical means, and carries out hybridization pairing by utilizing the bred sterile line and restoring line to breed the light green leaf three-line indica-japonica subspecies hybrid rice. The breeding method is suitable for genetic improvement of the existing non-light green leaf sterile line and restorer line, so that a new light green leaf indica-japonica subspecies hybrid rice variety is bred. The new rice variety of the cross hybrid between the indica and japonica subspecies with light green leaves bred by the method obviously solves the problems of greedy late maturity and later turning color difference of the cross hybrid between the indica and japonica subspecies, and is beneficial to popularization and application of the cross hybrid between the indica and japonica subspecies.
Drawings
FIG. 1 shows a plant of Chunjiang 24A.
FIG. 2 shows a plant of Chunjiang 28A.
Detailed Description
Example 1
And (3) breeding a light green leaf three-line japonica type sterile line Chunjiang 24A: selecting a non-light green leaf japonica rice maintainer line Chunjiang 26B with excellent agronomic characters as a female parent, hybridizing with a light green leaf japonica rice material Chunjiang 19B with excellent comprehensive agronomic characters, selecting a light green leaf single plant with excellent comprehensive agronomic characters in an F2 generation, selfing for 4 generations, basically stabilizing heredity to obtain a Chunjiang 24B, testing and crossing with a Yunnan I type sterile line Chunjiang 16A and continuously backcrossing for 5 generations, and selecting a japonica type three-line sterile line Chunjiang 24A with stable sterile characteristics, good flowering habit, high outcrossing maturing rate, excellent plant leaf morphology and light green leaf color.
TABLE 1 comparison of agronomic traits in Chunjiang 24A and Chunjiang 16A
Example 2
And (3) breeding a light green leaf three-line japonica type sterile line Chunjiang 28A: selecting a light green leaf japonica rice material Chunjiang 19B with excellent comprehensive agronomic characters as a female parent, hybridizing with a japonica rice maintainer line Chunjiang 028, selecting a light green leaf individual plant with excellent comprehensive agronomic characters in a filial generation F2, testing and crossing with a Yunnan I type sterile line Chunjiang 16A after selfing for 3 generations and continuously backcrossing for 5 generations, and selecting a japonica type three-line sterile line Chunjiang 28A with stable sterile characteristics, good flowering habit, high outcrossing maturing rate, excellent plant leaf morphology and light green leaf color.
TABLE 2 comparison of agronomic traits in Chunjiang 28A and Chunjiang 16A
In the above examples 1 and 2, the light green leaf japonica rice maintainer line Chunjiang 19B is used as a parent, either as a female parent or as a male parent, and the light green leaf gene resource carried by the light green leaf japonica rice maintainer line is used to create the japonica type three-line sterile line with light green leaf color. In addition to the light green leaf rice resource Chunjiang 19B used in this example, other light green leaf rice resource materials, such as light green leaf indica, japonica, wild rice or other mutant materials, may be selected and used as parents to achieve the same effect.
In addition, all breeding materials referred to in this application are commercially available.
Example 3
Breeding a light green leaf indica-japonica intermediate restorer line CH 101: selecting a non-light green leaf indica-japonica intermediate restoring line CH50 with excellent agronomic characters as a female parent, hybridizing with a light green leaf indica-japonica intermediate restoring line material C52 with excellent comprehensive agronomic characters, selecting a light green leaf single plant with excellent comprehensive agronomic characters in an F2 generation, continuously selfing for 4 generations to obtain a genetic stable plant line, testing and crossing with a Yunnan I type japonica rice sterile line Chunjiang 16A, and selecting a light green leaf indica-japonica intermediate restoring line CH101 with strong restoring performance.
Example 4
Breeding a light green leaf indica-japonica intermediate restorer line CH 111: selecting a non-light green leaf indica rice restorer line CH48 with excellent agronomic characters as a female parent, hybridizing with a light green leaf indica rice intermediate restorer line C52, selecting a light green leaf single plant with excellent comprehensive agronomic characters in an F2 generation, continuously selfing for 5 generations to obtain a genetic stable plant line, carrying out test crossing with a Yunnan I type japonica rice sterile line Chunjiang 16A, and selecting the light green leaf indica rice intermediate restorer line CH111 with strong recoverability.
In the above examples 3 and 4, the light green leaf indica-japonica intermediate restorer line C52 is used as a parent, and the light green leaf gene resource carried by the parent is used to create the light green leaf indica-japonica intermediate restorer line. Besides the light green leaf rice resource C52 used in this example, other light green leaf rice resource materials, such as light green leaf indica, japonica, indica-japonica intermediate type materials, wild rice materials, or light green leaf mutant materials from other sources, can be selected and used as parents to achieve the same effect.
Example 5
And (3) breeding the light green leaf indica-japonica subspecies hybrid rice spring superior 241: the three-line sterile line Chunjiang 24A with light green leaves and long-grained nonglutinous rice with stable sterile characteristics, good flowering habit, high outcrossing maturing rate and excellent plant leaf morphology is used as a female parent to carry out test crossing with a light green leaf and long-grained nonglutinous rice intermediate recovery line material CH101 with excellent comprehensive agronomic traits, F1 generation nutrition maintenance is vigorous, the leaf color is light green, the plant height is moderate, the hybrid vigor is obvious, and the late-stage color change is good.
Example 6
And (3) breeding of the light green leaf indica-japonica subspecies hybrid rice Chunyou 281: the light green leaf and japonica type three-line sterile line Chunjiang 28A with stable sterile characteristics, good flowering habit, high outcrossing maturing rate and excellent plant leaf morphology is used as a female parent to carry out test crossing with a light green leaf and indica type and japonica intermediate recovery line material CH101 with excellent comprehensive agronomic characters, F1 generation nutrition maintenance is vigorous, the leaf color is light green, the plant height is moderate, the hybrid vigor is obvious, and the later-stage color change is good.
TABLE 3 agronomic traits of the cross-bred rice Chuyou 241 and Chuyou 281 between the light green leaves indica and japonica subspecies
In the above examples 5 and 6, the light green leaf sterile line Chunjiang 24A and Chunjiang 28A are hybridized with the indica-japonica intermediate restorer line CH101 to breed new varieties of hybrid rice between indica-japonica subspecies with light green leaves. In addition to the above-mentioned sterile line and restorer line of the pale green leaf, other materials for sterile line and restorer line of the pale green leaf can be selected to achieve the same effect.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present disclosure, including any person skilled in the art, having the benefit of the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A breeding method of light green leaf three-line indica-japonica subspecies hybrid rice is characterized by comprising the following steps:
1) introducing gene resources of light green leaves into a non-light green leaf sterile line by using light green leaf rice resource materials through a breeding technology to breed a light green leaf three-line sterile line;
2) utilizing a light green leaf rice resource material, introducing a light green leaf gene resource into a non-light green leaf restorer line through a breeding technology, and breeding a light green leaf indica-japonica intermediate restorer line;
3) preparing a hybrid combination by using the sterile line obtained in the step 1) and the restoring line obtained in the step 2) to obtain a new three-line indica-japonica subspecies hybrid rice variety with high yield, light green leaf color and good color conversion in the later period;
the breeding method of the light green leaf three-line sterile line in the step 1) comprises the following steps:
1.1) selecting a light green leaf rice resource material as an acceptor or a donor parent;
1.2) crossing the parent with the gene controlling the light green leaves with a non-light green leaves maintainer line;
1.3) selecting a light green leaf single plant with excellent leaf morphology from the separated offspring to harvest seeds;
1.4) planting the light green leaf material obtained in the step 1.3), and continuously selfing for 3-4 generations to obtain a light green leaf maintenance line with excellent plant leaf morphology;
1.5) taking the bred light green leaf maintainer line as a recurrent parent, continuously backcrossing for 3-5 generations by means of hybridization and backcross, and introducing a light green leaf gene into a non-light green leaf three-line sterile line so as to obtain a light green leaf three-line sterile line;
the breeding method of the light green leaf indica-japonica intermediate restorer line in the step 2) comprises the following steps:
2.1) selecting a light green leaf indica type, japonica type or indica and japonica intermediate type rice resource material as a receptor parent or a donor parent;
2.2) hybridizing the parent with the controlled light green leaf gene with a restorer of japonica, indica or indica-japonica intermediate varieties;
2.3) selecting a light green leaf single plant with excellent leaf morphology in the separation generation to harvest seeds;
2.4) testing and crossing the rice material obtained in the step 2.3) with different types of sterile lines, measuring the restorability of the sterile lines, and selecting a line with strong restorability and excellent agronomic characters.
2. The method for breeding hybrid rice between indica and japonica subspecies of the light green leaf trilinear line according to claim 1, wherein the breeding technique in step 1) and step 2) comprises hybridization, backcross or other breeding techniques except hybridization and backcross.
3. The method for breeding hybrid rice between subspecies indica and japonica of light green leaf three-line according to claim 1, wherein the rice resource material of light green leaf in step 1) and step 2) is indica rice, japonica rice, indica and japonica intermediate type material, wild rice material or light green leaf mutant material of other sources.
4. The method for breeding hybrid rice between indica and japonica subspecies of light green leaf trilinear rice as claimed in claim 1, wherein said non-light green leaf trilinear sterile line in step 1) is any type of sterile line, such as Yunnan I type, BT type, imprinting type, herba Patriniae type or red lotus type.
5. The method for breeding hybrid rice between subspecies indica and japonica of light green leaf trilinear according to claim 1, wherein the non-light green leaf restorer line of step 2) is japonica, indica or indica-japonica intermediate restorer line.
6. The method for breeding the hybrid rice between the subspecies indica and japonica of the light green leaf three-line according to claim 1, wherein the bred light green leaf indica and japonica intermediate restorer is an indica and japonica intermediate indica or japonica restorer.
7. A breeding method of a light green leaf indica-japonica intermediate restorer line comprises the following steps:
1.1) selecting a light green leaf indica type, japonica type or indica and japonica intermediate type rice resource material as a receptor parent or a donor parent;
1.2) hybridizing the parent with the controlled light green leaf gene with a restorer line of a japonica type, an indica type or an indica and japonica intermediate variety;
1.3) selecting a light green leaf single plant with excellent leaf morphology in an isolated generation to harvest seeds;
1.4) testing and crossing the rice material obtained in the step 1.3) with different types of sterile lines, measuring the restorability of the sterile lines, and selecting a line with strong restorability and excellent agronomic characters.
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| CN108391588A (en) * | 2018-02-12 | 2018-08-14 | 金华市农业科学研究院 | A kind of three be the selection of indica-japonica hybrid glutinous rice |
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