CN105028184A - Rice fragrant and soft rice variety selecting and culturing method - Google Patents
Rice fragrant and soft rice variety selecting and culturing method Download PDFInfo
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- CN105028184A CN105028184A CN201510445911.XA CN201510445911A CN105028184A CN 105028184 A CN105028184 A CN 105028184A CN 201510445911 A CN201510445911 A CN 201510445911A CN 105028184 A CN105028184 A CN 105028184A
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Abstract
The invention discloses a rice fragrant and soft rice variety selecting and culturing method and belongs to the technical field of rice breeding. According to the method, a japonica rice soft rice material and a japonica rice high-yield fragrant rice material are hybridized, a hybrid generation F1 is obtained, a generation F2 is obtained through selfing of the generation F1, seeds of single plants of the F2 generation are ground into unpolished rice, seeds with the endosperm appearance in a cloud shape are selected out, and each seed is cut into two halves with a blade, wherein one half does not contain the endosperm, and the endosperm is completely maintained on the other half seeds; whether the half seeds which do not contain the endosperm are fragrant or not are tasted, if the half seeds which do not contain the endosperm are fragrant, the other half seed individuals which correspond to the half seeds which are fragrant and have the complete endosperm maintained are sown, and the rice fragrant and soft rice variety is obtained through 5-6 times of adding generation. According to the method, only the fragrant seed individuals with the endosperm appearance in the cloud shape are maintained to carry out adding generation, the rest of seeds are eliminated, and the method is ingenious, easy and convenient to implement, capable of saving breeding cost and high in breeding efficiency.
Description
Technical field
The invention belongs to rice breeding technology field.
Background technology
In rice breeding process, utilize two parents to hybridize, offspring can isolate a lot of type.If at hybridization F
2in generation, just can determine the type that breeding objective needs, and greatly will improve breeding efficiency.The amylose content of paddy endosperm is the principal element affecting rice quality, and amylose content is between 5% ~ 14%, and this kind of rice is called soft rice.Soft rice has that rice softness, outward appearance are glossy glossyly, cold does not bring back to life, and Cooking Quality is excellent especially.The material of amylose content between 5% ~ 14% of japonica rice rice is called the soft rice material of japonica rice.
Yunnan Guanyuan glutinous rice zone, due to height above sea level, the boiling point of water is lower, and general japonica rice rice is comparatively hard, and therefore soft rice breeding is significant.
The Endosperm appaearance of soft rice, between glutinous rice (milky) and meal rice (transparent), in cloud (muddiness), with the naked eye can be distinguished, there are some researches show, soft rice is controlled by single recessive gene.
Scented rice is a kind of specific type rice, commercially has very high economic worth, and fragrance has become an important rice quality evaluation index.There are some researches show, rice scent gene is positioned on the 8th chromosome, and is controlled by single recessive gene, and 2-acetyl-1-pyrrolin (2-acetyl-1-pyrroline, 2-AP) determines the most important chemical composition of rice aroma.Japonica rice output is more than 700,000 grams/acre and taste dulcet material and be called japonica rice high yield scented rice material.
Cereal Crops Inst., Yunnan Prov. Agricultural Academy is in the fragrant soft rice breed breeding process of japonica rice, the soft rice material of japonica rice and japonica rice high yield scented rice material is selected to hybridize, be bred as fragrant soft No. 29, the rice kind cloud round-grained rice of japonica rice, obtain good effect, but the breeding technique feature of unexposed key.
Summary of the invention
The object of the invention is to provide a kind of easy and simple to handle, saving breeding cost, the fragrant soft rice breed breeding method of the paddy rice that breeding efficiency is high.
Technical scheme of the present invention is: hybridize with the soft rice material of japonica rice and japonica rice high yield scented rice material, obtains crossbreed F
1generation, F
1f is obtained for selfing
2in generation, F
2seed for individual plant breaks into brown rice, picking out Endosperm appaearance is nebulous seed, with blade, this seed is cut into two halves, wherein half seed is not containing endosperm, and second half seed retains complete endosperm, and whether the half seed tasted not containing endosperm is savory, if the half seed not containing endosperm is savory, then by second half seed individuality sowing of complete for the reservation of its correspondence endosperm, and by 5-6 adding generation, be namely bred as the fragrant soft rice kind of paddy rice.
Beneficial effect of the present invention:
Because low amylose content and fragrance control by single recessive gene, once the just energy genetic stability that isozygotys, and low amylose content rice Endosperm appaearance is cloud, can with the naked eye distinguish, and fragrance then can be determined by tasting.
It is heterozygote that the soft rice of japonica rice and high yield scented rice hybridize the crossbreed obtained.Crossbreed carries out selfing, the F of generation
2homozygote is had again for the existing heterozygote of seed.In homozygote, Endosperm appaearance is that nebulous type is soft rice, but in soft rice, some does not have fragrance, therefore, by tasting, can select dulcet seed.
The inventive method is passed through F
2select for the outward appearance of seed endosperm and fragrance, only retain Endosperm appaearance and be cloud and dulcet seed individuality carries out adding generation, eliminate all the other seeds, one side substantially increases the breeding efficiency of fragrant soft rice, greatly reduce Breeding Scale on the other hand, save manpower and materials.The inventive method only retains Endosperm appaearance and is cloud and dulcet seed individuality carries out adding generation, eliminates all the other seeds, and its method is ingenious, easy, saved breeding cost, and breeding efficiency is high.
Embodiment
Following examples are conventional rice breeding method without specified otherwise.The material that following examples exemplify is only citing, is not limited to these two parts of materials, hybridizes, undertaken all can arriving technique effect of the present invention by the inventive method with the soft rice material of other japonica rice and japonica rice high yield scented rice material.
Test material:
The soft rice kind silver light of japonica rice and No. 26, japonica rice high yield scented rice varieties cloud round-grained rice are commercially available prod, all can buy from Kunming Feng Jin agricultural science and technology development corporation, Ltd., the address of the said firm: in institute of agricultural section of Yunnan Province of No. 2238, Panlong District Beijing Road, Kunming, Yunnan Province, postcode 650205.
Hybridize with the soft rice kind silver light of japonica rice and No. 26, japonica rice high yield scented rice varieties cloud round-grained rice, obtain crossbreed F
1generation, F
1f is obtained for selfing
2in generation, F
2seed small-scale test brown rice machine for individual plant breaks into brown rice (not destroying embryo), picking out Endosperm appaearance is nebulous seed (approximately only having the seed of 1/4 to be cloud), with blade, this, to be nebulous seed cut into two halves from the place apart from embryo 2/3, wherein half seed is not containing endosperm, second half seed retains complete endosperm, whether the half seed tasted not containing endosperm is savory, if the half seed not containing endosperm is savory, then second half seed individuality of complete endosperm that remains with of its correspondence is sowed, and by 5 adding generations, namely to be bred as stable, it is the soft rice fragrant soft rice kind of dulcet paddy rice again.Eliminate all the other seeds.The inventive method only retains Endosperm appaearance and is cloud and dulcet seed individuality carries out adding generation, eliminates all the other seeds, and its method is ingenious, easy, saved breeding cost, and breeding efficiency is high.
Claims (1)
1. the fragrant soft rice breed breeding method of paddy rice, is characterized in that: hybridize with the soft rice material of japonica rice and japonica rice high yield scented rice material, obtains crossbreed F
1generation, F
1f is obtained for selfing
2in generation, F
2seed for individual plant breaks into brown rice, picking out Endosperm appaearance is nebulous seed, with blade, this seed is cut into two halves, wherein half seed is not containing endosperm, and second half seed retains complete endosperm, and whether the half seed tasted not containing endosperm is savory, if the half seed not containing endosperm is savory, then by second half seed individuality sowing of complete for the reservation of its correspondence endosperm, and by 5-6 adding generation, be namely bred as the fragrant soft rice kind of paddy rice.
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| CN201510445911.XA CN105028184A (en) | 2015-07-27 | 2015-07-27 | Rice fragrant and soft rice variety selecting and culturing method |
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| CN201510445911.XA CN105028184A (en) | 2015-07-27 | 2015-07-27 | Rice fragrant and soft rice variety selecting and culturing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111387048A (en) * | 2020-04-22 | 2020-07-10 | 云南省农业科学院粮食作物研究所 | Rice blast-resistant soft fragrant rice variety polymerization breeding method |
| CN115968775A (en) * | 2023-03-14 | 2023-04-18 | 云南省农业科学院粮食作物研究所 | Method for preparing low amylose soft rice of rice |
| CN116210580A (en) * | 2023-04-12 | 2023-06-06 | 贵州省农作物技术推广总站 | Breeding method of extra soft black rice variety |
| CN116210581A (en) * | 2023-04-12 | 2023-06-06 | 贵州省农作物技术推广总站 | Breeding method of extra-soft red rice variety |
-
2015
- 2015-07-27 CN CN201510445911.XA patent/CN105028184A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 中国水稻研究所科技信息中心: "CNA008474E 云粳37号", 《国家水稻数据中心》 * |
| 张羽等: "水稻香味的研究与应用", 《安徽农业科学》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111387048A (en) * | 2020-04-22 | 2020-07-10 | 云南省农业科学院粮食作物研究所 | Rice blast-resistant soft fragrant rice variety polymerization breeding method |
| CN115968775A (en) * | 2023-03-14 | 2023-04-18 | 云南省农业科学院粮食作物研究所 | Method for preparing low amylose soft rice of rice |
| CN116210580A (en) * | 2023-04-12 | 2023-06-06 | 贵州省农作物技术推广总站 | Breeding method of extra soft black rice variety |
| CN116210581A (en) * | 2023-04-12 | 2023-06-06 | 贵州省农作物技术推广总站 | Breeding method of extra-soft red rice variety |
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Application publication date: 20151111 |
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