CN112042528A - Mechanical powder removing method for hybrid japonica rice - Google Patents
Mechanical powder removing method for hybrid japonica rice Download PDFInfo
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- CN112042528A CN112042528A CN202011080141.0A CN202011080141A CN112042528A CN 112042528 A CN112042528 A CN 112042528A CN 202011080141 A CN202011080141 A CN 202011080141A CN 112042528 A CN112042528 A CN 112042528A
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- mechanical
- japonica rice
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
- A01H1/02—Methods or apparatus for hybridisation; Artificial pollination ; Fertility
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Abstract
The invention discloses a mechanical powder removing method for hybrid japonica rice, which comprises the following steps: and in the female parent population of the hybrid japonica rice to be subjected to powder removing, when the glume opening angles of more than 80% of glume opening female parents in the female parent population are more than 45 degrees, performing first mechanical one-way powder removing, and performing second mechanical one-way powder removing at intervals of 15-20 minutes after the first mechanical one-way powder removing is finished. The method improves the pollen utilization efficiency and the fertilization and fructification probability of the sterile line, and ensures that the seed production outcrossing fructification rate reaches more than 60 percent.
Description
Technical Field
The invention belongs to the field of agricultural rice seed production, and relates to a mechanical flour removing method for hybrid japonica rice.
Background
The development of the hybrid japonica rice in China is unbalanced and insufficient, and the proportion difference of the hybrid japonica rice planted in different areas is large. At present, the japonica rice area in China reaches about 1.4 hundred million acres, wherein the planting area of hybrid japonica rice is less than 3 percent of the total planting area of japonica rice. The hybrid japonica rice is the core of national food safety, and the future development space is huge.
The key factor for restricting the popularization and application of the hybrid japonica rice is that the seed production yield is low, the pollen quantity of the conventional restorer line is obviously improved, but the seed production yield in various places is uneven, and one reason is that the auxiliary pollination time of mechanical seed production is not controlled in place, so that the pollen utilization efficiency of the restorer line is low, the seed setting rate of hybrid seed production is low, and the yield level is not high.
Disclosure of Invention
The invention aims to provide a mechanical powder removing method for hybrid japonica rice. The method provided by the invention can better improve seed production seed setting rate and yield.
The invention provides a mechanical powder removing method for hybrid japonica rice, which comprises the following steps:
and in the female parent population of the hybrid japonica rice to be subjected to powder removing, when the glume opening angles of more than 80% of glume opening female parents in the female parent population are more than 45 degrees, performing first mechanical one-way powder removing, and performing second mechanical one-way powder removing at intervals of 15-20 minutes after the first mechanical one-way powder removing is finished.
Specifically, the hybrid japonica rice is at least one of Huayou 14, Tianlong you 619, Liaoyou 9915, Qiuyoujinfeng, Shenyou 26 and Shenyou 28.
Preferably, the row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1: 5.
specifically, the mechanical powder driving speed is 25 km/h.
Specifically, the mechanical one-way powder driving device is used for driving the powder in one way for the tractor.
Specifically, the male parent of the hybrid japonica rice is the restorer japonica rice, and the female parent is the sterile japonica rice.
Further, the direction of the first mechanical unidirectional powder driving is opposite to the direction of the second mechanical unidirectional powder driving.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts mechanical powder driving in a matching way, when the glume opening angle of more than 80% of glume opening female parents in the female parent population is more than 45 degrees, the mechanical unidirectional powder driving is carried out for the first time, the mechanical unidirectional powder driving is carried out for the second time at an interval of 15-20 minutes after the mechanical unidirectional powder driving is finished, when the glume opening angle of more than 80% of glume opening female parents in the female parent population is more than 45 degrees, the glume opening angle of more than 45 degrees is very beneficial to fertilization, the fertilization probability of the female parent is increased, the pollen utilization rate of the japonica rice of the restorer line is improved, the mechanical powder driving can increase the bounce distance of the japonica rice of the restorer line and the density is uniform, the pollen utilization efficiency and the fertilization and fructification probability of the sterile line are improved, and the outcrossing seed production is ensured to reach more than 60%.
Detailed Description
The present invention is further illustrated by the following examples. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and process are given, but the scope of the present invention includes, but is not limited to, the following embodiments.
The invention provides a mechanical powder removing method for hybrid japonica rice, which comprises the following steps:
in the female parent population of the hybrid japonica rice to be subjected to powder removal, when the glume opening angles of more than 80% of glume opening female parents in the female parent population are more than 45 degrees, performing first mechanical one-way powder removal, and performing second mechanical one-way powder removal at intervals of 15-20 minutes after the first mechanical one-way powder removal is finished.
Specifically, the hybrid japonica rice is at least one of Huayou 14, Tianlong you 619, Liaoyou 9915, Qiuyoujinfeng, Shenyou 26 and Shenyou 28.
Preferably, the row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1: 5.
specifically, the mechanical powder driving speed was 25 km/h.
Specifically, the mechanical one-way powder driving device is used for driving the powder in one way for the tractor.
Specifically, the male parent of the hybrid japonica rice is the restoring line japonica rice, and the female parent is the sterile line japonica rice. The sterile japonica rice has good flowering habit and concentrated flowering, usually the flowering is concentrated at about 11 am, and the pollination probability is high when the sterile japonica rice is used as a female parent.
Further, the direction of the first mechanical unidirectional powder driving is opposite to that of the second mechanical unidirectional powder driving.
Comparative example
The embodiment of the invention adopts hybrid japonica rice Shenyou 26 to produce seeds, and concretely, the male parent of the hybrid japonica rice is the restoring line japonica rice, and the female parent is the sterile line japonica rice. Specifically, the hybrid combination Shenyou 26 (Hu examine rice 2017001) is a approved variety in Shanghai city, the parents of the hybrid combination Shenyou 26 are Shen 9A and Shenhui 26, wherein Shen 9A obtains the new variety right of the national plant (CNA20110864.8), Shenhui 26 applies for the new variety right of the national plant (application number: 20162324.3), and the parent materials of Shenyou 26 can be obtained from the agricultural science institute of Shanghai city in the breeding unit through a signatory protocol.
In the seed production process, the row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1: and 5, specifically, planting 2 rows of male parents of the hybrid japonica rice, planting 10 rows of female parents of the hybrid japonica rice, alternately planting the male parents and the female parents, and mechanically driving the rice powder when the glume opening angle of more than 50 percent of glume opening female parents in the female parent population is more than 30 degrees in the female parent population of the hybrid japonica rice to be driven with the rice powder.
The speed of the first mechanical unidirectional powder driving and the second mechanical unidirectional powder driving is 15 km/h.
Specifically, the mechanical one-way powder driving device is used for driving the powder in one way for the tractor.
The female parent setting rate of the japonica hybrid rice provided by the comparative example is detected, and the setting rate is 42.5%.
Example 1
The embodiment of the invention adopts hybrid japonica rice Shenyou 26 to produce seeds, and concretely, the male parent of the hybrid japonica rice is the restoring line japonica rice, and the female parent is the sterile line japonica rice. Specifically, the hybrid combination Shenyou 26 (Hu examine rice 2017001) is a approved variety in Shanghai city, the parents of the hybrid combination Shenyou 26 are Shen 9A and Shenhui 26, wherein Shen 9A obtains the new variety right of the national plant (CNA20110864.8), Shenhui 26 applies for the new variety right of the national plant (application number: 20162324.3), and the parent materials of Shenyou 26 can be obtained from the agricultural science institute of Shanghai city in the breeding unit through a signatory protocol.
In the seed production process, the row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1: and 5, specifically, planting 2 rows of male parents of the hybrid japonica rice, planting 10 rows of female parents of the hybrid japonica rice, alternately planting the male parents and the female parents, performing first mechanical unidirectional powder driving when more than 80% of glume-opening angles of glume-opening female parents in the female parent population are more than 45 degrees in the female parent population of the hybrid japonica rice to be subjected to powder driving, and performing second mechanical unidirectional powder driving at intervals of 15 minutes after the first mechanical unidirectional powder driving is finished.
The speed of the first mechanical unidirectional powder driving and the second mechanical unidirectional powder driving is 20 km/h.
Specifically, the mechanical one-way powder driving device is used for driving the powder in one way for the tractor.
Further, the direction of the first mechanical unidirectional powder driving is opposite to that of the second mechanical unidirectional powder driving.
The female parent setting rate of the japonica hybrid rice provided by the embodiment 1 of the invention is detected, and the measured setting rate is 60.3%.
Example 2
In the embodiment of the invention, hybrid japonica rice Shenyou 26 is adopted for seed production, and the row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1: and 5, specifically, planting 2 rows of male parents of the hybrid japonica rice, planting 10 rows of female parents of the hybrid japonica rice, alternately planting the male parents and the female parents, performing first mechanical unidirectional powder driving when more than 80 percent of glume-opening angles of glume-opening female parents in the female parent population are more than 45 degrees in the female parent population of the hybrid japonica rice to be subjected to powder driving, and performing second mechanical unidirectional powder driving at intervals of 20 minutes after the first mechanical unidirectional powder driving is finished.
The speed of the first mechanical unidirectional powder driving and the second mechanical unidirectional powder driving is 30 km/h.
Specifically, the mechanical one-way powder driving device is used for driving the powder in one way for the tractor.
Further, the direction of the first mechanical unidirectional powder driving is opposite to that of the second mechanical unidirectional powder driving.
The female parent setting rate of the japonica hybrid rice provided by the embodiment 1 of the invention is detected, and the measured setting rate is 61.0%.
Example 3
In the embodiment of the invention, hybrid japonica rice Shenyou 26 is adopted for seed production, and the row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1: and 5, specifically, planting 2 rows of male parents of the hybrid japonica rice, planting 10 rows of female parents of the hybrid japonica rice, alternately planting the male parents and the female parents, performing first mechanical unidirectional powder driving when more than 80% of glume-opening angles of glume-opening female parents in the female parent population are more than 45 degrees in the female parent population of the hybrid japonica rice to be subjected to powder driving, and performing second mechanical unidirectional powder driving at intervals of 17 minutes after the first mechanical unidirectional powder driving is finished.
The speed of the first mechanical unidirectional powder driving and the second mechanical unidirectional powder driving is 25 km/h.
Specifically, the mechanical one-way powder driving device is used for driving the powder in one way for the tractor.
Further, the direction of the first mechanical unidirectional powder driving is opposite to that of the second mechanical unidirectional powder driving.
The female parent setting rate of the japonica hybrid rice provided by the embodiment 1 of the invention is detected, and the measured setting rate is 60.7%.
The invention adopts mechanical powder driving in a matching way, when the glume opening angles of more than 80 percent of glume opening female parents in a female parent population of the japonica hybrid rice to be subjected to powder driving are more than 45 degrees, the mechanical unidirectional powder driving is carried out for the first time, the mechanical unidirectional powder driving is carried out for the second time at an interval of 15-20 minutes after the mechanical unidirectional powder driving is finished for the first time, when the glume opening angles of more than 80 percent of glume opening female parents in the female parent population are more than 45 degrees, the glume opening angles of more than 45 degrees are very favorable for fertilization, glume is opened to the maximum angle from cracking, and then is slowly closed, which is a dynamic change process, when the glume opening angles reach the maximum, glume shells can be slowly closed, when the glume opening angles are more than 45 degrees, the female parent can be ensured to have higher fertilization probability, the pollen utilization rate of the japonica hybrid rice is improved, and the glume driving of more than 80 percent of glume opening female parents is started for the first time when the glu, therefore, pollen cannot be wasted, the pollen bounce distance of the japonica rice of the restorer line can be increased by mechanical pollen driving, the density is uniform, the pollen utilization efficiency and the sterile line fertilization and fructification probability are improved, and the seed production outcrossing fructification rate is ensured to reach more than 60%.
Claims (8)
1. The method for mechanically catching powder of hybrid japonica rice is characterized by comprising the following steps of:
and in the female parent population of the hybrid japonica rice to be subjected to powder removing, when the glume opening angles of more than 80% of glume opening female parents in the female parent population are more than 45 degrees, performing first mechanical one-way powder removing, and performing second mechanical one-way powder removing at intervals of 15-20 minutes after the first mechanical one-way powder removing is finished.
2. The method as claimed in claim 1, wherein the hybrid japonica rice is at least one of Huayou 14, Tianlong you 619, Liaoyou 9915, Qiuyoujinfeng, Shenyou 26 and Shenyou 28.
3. The method as claimed in claim 1, wherein the row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1: 5.
4. the method according to claim 1, wherein the first mechanical unidirectional powder driving speed and the second mechanical unidirectional powder driving speed are both 20-30 km/h.
5. The method of claim 4, wherein the mechanical dislodging is at a rate of 25 km/h.
6. The method of claim 1, wherein the mechanical one-way catch powder is a tractor one-way catch powder.
7. The method as claimed in claim 1, wherein the male parent of the hybrid japonica rice is restorer japonica rice and the female parent is sterile japonica rice.
8. A method according to claim 7 wherein the first mechanical unidirectional dislodging of powder is in an opposite direction to the second mechanical unidirectional dislodging of powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011080141.0A CN112042528A (en) | 2020-10-10 | 2020-10-10 | Mechanical powder removing method for hybrid japonica rice |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011080141.0A CN112042528A (en) | 2020-10-10 | 2020-10-10 | Mechanical powder removing method for hybrid japonica rice |
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| CN112042528A true CN112042528A (en) | 2020-12-08 |
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| CN202011080141.0A Pending CN112042528A (en) | 2020-10-10 | 2020-10-10 | Mechanical powder removing method for hybrid japonica rice |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0322927A (en) * | 1989-06-19 | 1991-01-31 | Mitsui Toatsu Chem Inc | Rice plant having novel cytoplasm and its cultivation |
| CN101044833A (en) * | 2006-03-27 | 2007-10-03 | 湖南杂交水稻研究中心 | Method for reproducing and production of hybrid seeds of rice karyoplasmic interaction type incomplete male sterility line |
| CN101171905A (en) * | 2007-09-11 | 2008-05-07 | 江苏徐淮地区徐州农业科学研究所 | Hybridization non-glutinous rice combination 9 excellent 418 high production seed producing method |
| CN101697708A (en) * | 2009-11-27 | 2010-04-28 | 天津天隆农业科技有限公司 | Method for producing seeds of japonica hybrid rice |
| CN102835302A (en) * | 2012-09-12 | 2012-12-26 | 上海市农业科学院 | Method for producing seeds of hybrid japonica rice mechanically and fully |
-
2020
- 2020-10-10 CN CN202011080141.0A patent/CN112042528A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0322927A (en) * | 1989-06-19 | 1991-01-31 | Mitsui Toatsu Chem Inc | Rice plant having novel cytoplasm and its cultivation |
| CN101044833A (en) * | 2006-03-27 | 2007-10-03 | 湖南杂交水稻研究中心 | Method for reproducing and production of hybrid seeds of rice karyoplasmic interaction type incomplete male sterility line |
| CN101171905A (en) * | 2007-09-11 | 2008-05-07 | 江苏徐淮地区徐州农业科学研究所 | Hybridization non-glutinous rice combination 9 excellent 418 high production seed producing method |
| CN101697708A (en) * | 2009-11-27 | 2010-04-28 | 天津天隆农业科技有限公司 | Method for producing seeds of japonica hybrid rice |
| CN102835302A (en) * | 2012-09-12 | 2012-12-26 | 上海市农业科学院 | Method for producing seeds of hybrid japonica rice mechanically and fully |
Non-Patent Citations (1)
| Title |
|---|
| 龚丽英等: "粳型杂交稻旱优8号高产制种技术", 《浙江农业科学》 * |
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Application publication date: 20201208 |