IPC분류정보
국가/구분 |
United States(US) Patent
공개
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0372383
(2016-12-07)
|
공개번호 |
US-0086401
(2017-03-30)
|
우선권정보 |
CN-201510153520.0 (2015-04-01) |
발명자
/ 주소 |
- TIAN, Xiaoming
- XU, Hongjun
- NIE, Yingbin
- MU, Peiyuan
- HAN, Xinnian
- SANG, Wei
- CUI, Fengjuan
|
출원인 / 주소 |
- Xinjiang Academy of Agri-Reclamation Sciences
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
0 |
초록
▼
Disclosed is a method for producing three-line hybrid wheat parent foundation seeds, including: determining whether sterile-line head progeny rows satisfy 100% sterile degree index of a sterile line or not by bagged selfing of the sterile-line head progeny rows, separately harvesting the bagged outc
Disclosed is a method for producing three-line hybrid wheat parent foundation seeds, including: determining whether sterile-line head progeny rows satisfy 100% sterile degree index of a sterile line or not by bagged selfing of the sterile-line head progeny rows, separately harvesting the bagged outcrossed heads satisfying the index to achieve cyclic breeding of sterile-line spike lines, and mixedly harvesting the sterile-line head progeny rows satisfying the index for sterile-line foundation seed plots; conducting test crossing on the separately harvested bagged outcrossed head seeds and the restorer-line head progeny rows, correspondingly numbering the restorer-line head progeny rows and bagged test-crossed heads, and separately harvesting bagged test-crossed seeds; conducting yield comparison on the separately harvested bagged test-crossed seeds, taking a part of preserved restorer-line head progeny row seeds meeting the requirement for cyclic breeding of restorer-line spike lines, and then planting the rest in restorer-line foundation seed plots.
대표청구항
▼
1. A method for producing three-line hybrid wheat parent foundation seeds, comprising the following steps: a. determining whether sterile-line head progeny rows satisfy the 100% sterile degree index of a sterile line or not by bagged selfing of the sterile-line head progeny rows, separately harvesti
1. A method for producing three-line hybrid wheat parent foundation seeds, comprising the following steps: a. determining whether sterile-line head progeny rows satisfy the 100% sterile degree index of a sterile line or not by bagged selfing of the sterile-line head progeny rows, separately harvesting the sterile-line head progeny rows satisfying the sterile degree index and bagged outcrossed heads of maintainer-line head progeny rows, and mixedly harvesting the sterile-line head progeny rows satisfying the sterile degree index;b. achieving cyclic breeding of sterile-line spike lines by using the bagged outcrossed head seeds separately harvested in the step a to perform interplanting with the same type of maintainer lines; planting the mixedly harvested sterile-line head progeny row seeds for sterile-line foundation seed plots, and harvesting sterile-line foundation seeds after maturing;c. conducting pairing, bagging and test crossing on the bagged outcrossed head seeds separately harvested in the step a and restorer-line head progeny rows, correspondingly numbering the restorer-line head progeny rows and bagged test-crossed heads, and separately harvesting bagged test-crossed seeds;d. conducting yield comparison on the bagged test-crossed seeds separately harvested in the step c, weeding out the test-crossed seeds expressing poor hybrid vigor, and preserving restorer-line head progeny row seeds corresponding to the test-crossed seeds in number; ande. taking a small amount of preserved restorer-line head progeny row seeds corresponding to the test-crossed seeds meeting the requirement for cyclic breeding of restorer-line spike lines, then mixing the head progeny row seeds for planting restorer-line foundation seed plots, and harvesting them as restorer-line foundation seeds. 2. The method according to claim 1, wherein in the step a, interplanting is conducted on sterile-line head progeny row female parents and the same type of maintainer-line head progeny row male parents according to the row ratio of 2 to 1 in an isolation zone;after heading, at least one stem head is randomly selected from each sterile-line head progeny row for bagged selfing, and at least two heads are randomly selected from each sterile-line head progeny row for bagged outcrossing with the adjacent maintainer-line heads;the flowering situations of the sterile-line head progeny rows are observed at the flowering stage;the fructification situations of the bagged selfed heads of the sterile-line head progeny rows are checked at the maturation stage;the sterile-line head progeny rows with pollen-spreading plants or bearing bagged selfed fruits do not satisfy the 100% sterile degree index of the female-parent sterile lines;the sterile-line head progeny rows which do not satisfy the sterile degree index are weeded out; andafter the bagged outcrossed heads in the sterile-line head progeny rows satisfying the sterile degree index are separately harvested, the sterile-line head progeny row seeds satisfying the sterile degree index are mixedly harvested. 3. The method according to claim 2, wherein the method further comprises: the mixedly harvested sterile-line head progeny row seeds and the same type of the maintainer-line male parents are interplanted in a row ratio of 6-10 to 2 in the isolation zone; during the flowering and pollen spreading stage of the maintainer-line, artificial supplementary pollination is continuously performed by using blowers for 5 days, then 2 rows of the maintainer-line male parent plants are cut off; and the sterile-line female parent seeds are harvested at the maturation stage, which are the sterile-line foundation seeds. 4. The method according to claim 1, wherein the step c comprises: the sterile-line head progeny row female parents and the restorer-line head progeny row male parents are interplanted by a row ratio of 1 to 2 in the isolation zone, wherein the sterile-line head progeny row female parents are the bagged outcrossed head seeds of the harvested sterile-line head progeny rows satisfying the sterile degree index;the restorer-line head progeny rows with poor expression are weeded out in fields;after heading, at least two heads are randomly selected from each sterile-line head progeny row for bagged outcrossing with heads of the adjacent restorer-line head progeny rows, and the test-crossed heads and the corresponding restorer-line head progeny rows are numbered, listed and marked in an one-to-one correspondence; andat the maturation stage, the bagged test-crossed heads of the sterile-line x the restorer-line are separately harvested and are respectively preserved according to numbers to obtain the test-crossed seeds, then the corresponding numbered restorer-line head progeny rows are harvested, and the head progeny rows are separately threshed and are respectively packaged and preserved according to numbers to obtain the restorer-line head progeny row seeds. 5. The method according to claim 1, wherein the method further comprises: yield comparison is conducted on the restorer-line test-crossed seeds and an augmentation test design is adopted for field arrangement with a mainly planted commercial variety as a control; the restorer-line head progeny row seeds corresponding to the restorer-line test-crossed seeds remarkably lower than the control in yield are weeded out according to the one-to-one corresponding numbers to preserve seeds; and a small amount of seeds of each selected restorer-line head progeny row is firstly reserved for restoring cyclic breeding of the restorer-line spike lines, and then the selected restorer-line head progeny row seeds are mixed for planting the restorer-line foundation seeds.
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