CN105210860A - The breeding method of a kind of disease resistance paddy rice - Google Patents
The breeding method of a kind of disease resistance paddy rice Download PDFInfo
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- CN105210860A CN105210860A CN201410270383.4A CN201410270383A CN105210860A CN 105210860 A CN105210860 A CN 105210860A CN 201410270383 A CN201410270383 A CN 201410270383A CN 105210860 A CN105210860 A CN 105210860A
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Abstract
The present invention relates to the breeding method of a kind of disease resistance paddy rice, comprise the following steps: collect rice material, presoaking and germinating, be sowed at rice seedling bed, under the condition of not spraying medicine, select and remain blade not by the rice material of rice blast harm seedling stage, individual plant culture transferring enters land for growing field crops, the rice blast disease incidence of rice leaf is observed tillering stage to the shooting stage, select and remain stem not by the rice material of rice sheath blight disease heading stage, select and remain plant not by the rice material of bacterial leaf-blight harm flowering stage and maturing stage, carry out seminal propagation, continue plantation and evaluate rice blast respectively, rice line is sick, the disease resistance of withered bacterial leaf-blight, under continuing to be planted in natural environmental condition, different year is sent out, disease-resistant stability is evaluated in season and place, stable material is bred, obtain disease-resistant Rice New Material.The disease resisting rice that the present invention cultivates, realizes the safety plantation of " green rice " polluted without chemical pesticide, guarantees that pollution-free high-quality paddy rice is planted out by China.
Description
Technical field
The present invention relates to the breeding method of a kind of disease resistance paddy rice.
Background technology
Rice pest, being the performance having a strong impact on paddy rice high and stable yields and quality optimization restriction increasing production of rice potential, is the Major Natural Disasters of serious threat rice safety plantation.Guangxi Zhuang Autonomous Region paddy rice Annual planting area about 3,400 ten thousand mu, sick worm overall occurrence degree 4 (5) level, year occurring area about 9,000 ten thousand mu.The snout moth's larva of rice (paddy stem borer, striped rice borer), rice fulgorid, rice leaf roller, rice gall midge, rice blast, rice line disease, withered bacterial leaf-blight etc. are the main damage by disease and insect of rice in Guangxi province, in recent years be generally the medium degree that lays particular stress on to occur, rice fulgorid, paddy stem borer, rice leaf roller, rice blast reach large occurrence degree in some areas, occurring area is in fifty-five million mu time left and right, visible Dao Bingduiwo district grain-production forms maximum threat, causes great loss to the economy of peasant.Production lacks a kind of chemical pesticide that can not rely on to prevent the paddy rice of damage by disease and insect, and agricultural chemicals is used and has been had the problems such as residual, serious environment pollution.
Take seed selection preventing disease and pest rice varieties because using the features such as easy and simple to handle, economical and effective and environmental friendliness dark liking by peasant.Along with coming out one after another of insect protected transgenic paddy rice (China mainly containing China extensive No. 1 and Bt Shanyou 63), more and more people pays close attention to the development of transgenic paddy rice, no exception abroad, the scholar of existing Asia, 15 the national this respects in Europe and North America researches and develops, and achieve significant achievement in this respect, in succession cultivate the series of products of the Lepidopteran rice insects such as high resistance rice leaf roller and rice borer, but little to diseases such as rice blast, rice line disease, withered bacterial leaf-blights.
Summary of the invention
The object of the present invention is to provide the breeding method of a kind of non-transgenic type disease resistance paddy rice, to realize the safety plantation of " green rice " that pollute without chemical pesticide, guarantee the lasting stable development of China's pollution-free high-quality Rice Cropping.
The breeding method of disease resistance paddy rice of the present invention, is characterized in that comprising the following steps:
(1) collect rice material, presoaking and germinating, is sowed at rice seedling bed;
(2) under the condition of not spraying medicine, the disease incidence of seedling leaves is observed in seedling stage;
(3) select and remain not by the rice material of rice blast harm, individual plant culture transferring enters land for growing field crops, is not spraying the rice blast disease incidence observing rice leaf under medicinal strip part tillering stage to the shooting stage;
(4) select and remain not by the sick rice material of rice line, observe the rice sheath blight disease incidence of rice leaf heading stage not spraying under medicinal strip part;
(5) select and remain not by the rice material of bacterial leaf-blight harm, do not spraying the Harm flowering stage and maturing stage observation rice plant under medicinal strip part, and carrying out seminal propagation;
(6) continue the selected rice material of plantation step (5), evaluate the disease-resistant rice material of rice blast, the rice sheath blight, bacterial leaf-blight respectively;
(7) continue the selected rice material of plantation step (6), under natural environmental condition, evaluate the stability of checking rice blast, the rice sheath blight and bacterial leaf spot resistance, stable material is bred, obtains disease-resistant Rice New Material.
In the present invention, said collection material, can be collect the rice varieties of China various places, strain that germ plasm resource, mutagenesis produce and plant.
In the present invention, said stability refers to that the rice blast of selected paddy rice, rice line are sick, withered bacterial leaf spot resistance can (more than 2 seasons) and intersite between (more than 2 years), season (2 places and more than) be expressed consistent between different year, and disease resistance is by time, significantly the affecting of season and place.
In the present invention, said evaluation rice blast, rice line are sick, the disease resistance of withered bacterial leaf-blight, adopt the method (Zhu Fengmei, the phytopathologist that China is famous) of Zhu Feng U.S..
Beneficial effect of the present invention is:
The disease resisting rice that the present invention cultivates, to rice blast, rice line disease, withered bacterial leaf-blight, there is disease resistance, and do not take transgenic technology, there is not the ecology of transgenic paddy rice and food safety risk and the public and worry problem, easily be accepted and promote, meeting the demand that government, peasant and enterprise produce pollution-free rice.
Technical solution of the present invention is as follows:
From mutagenesis plant cultivating disease resisting rice CLL-1, with from Guangxi Zhuang Autonomous Region Main Cultivation " " kind is for material for Tiandong County's rice scented rice, more than 15000 mutagenesis two generation sudden change seed within 2011, is built through gamma-ray radiation mutagenic treatment, by mutant presoaking and germinating, rice seedling bed is sowed at by strain, under the condition of not spraying medicine, select and remain not by the rice material of rice blast harm seedling stage, selected 300, individual plant culture transferring enters land for growing field crops, blade of selecting and remain tillering stage to the shooting stage not to be critically ill harmful rice material by rice line, selected 30, select and remain stem not by the rice sheath blight disease incidence observing rice leaf heading stage, select and remain not by the rice material of withered bacterial leaf-blight harm flowering stage and maturing stage, selected 15, carry out seminal propagation, continue the resistance that rice blast is evaluated in plantation, selected 8, continue the resistance that rice line disease is evaluated in plantation, selected 4, continue the resistance that withered bacterial leaf-blight is evaluated in plantation, selected 1, evaluate checking under continuing to be planted in natural environmental condition, confirm that the disease-resistant characteristic Absorbable organic halogens of this material is expressed, be numbered CLL-1 through breeding.
Claims (2)
1. a breeding method for disease resistance paddy rice, is characterized in that comprising the following steps: 1) collect rice material, presoaking and germinating, is sowed at rice seedling bed;
(2) under the condition of not spraying medicine, the disease incidence of seedling leaves is observed in seedling stage;
(3) select and remain not by the rice material of rice blast harm, individual plant culture transferring enters land for growing field crops, is not spraying the rice blast disease incidence observing rice leaf under medicinal strip part tillering stage to the shooting stage;
(4) select and remain not by the sick rice material of rice line, observe the rice sheath blight disease incidence of rice leaf heading stage not spraying under medicinal strip part;
(5) select and remain not by the rice material of bacterial leaf-blight harm, do not spraying the Harm flowering stage and maturing stage observation rice plant under medicinal strip part, and carrying out seminal propagation;
(6) continue the selected rice material of plantation step (5), evaluate the disease-resistant rice material of rice blast, the rice sheath blight, bacterial leaf-blight respectively;
(7) continue the selected rice material of plantation step (6), under natural environmental condition, evaluate the stability of checking rice blast, the rice sheath blight and bacterial leaf spot resistance, stable material is bred, obtains disease-resistant Rice New Material.
2. disease resisting rice breeding method according to claim 1, is characterized in that said collection material, be the rice varieties of China various places, germ plasm resource, mutagenesis produce strain and plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270383.4A CN105210860A (en) | 2014-06-18 | 2014-06-18 | The breeding method of a kind of disease resistance paddy rice |
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| CN201410270383.4A CN105210860A (en) | 2014-06-18 | 2014-06-18 | The breeding method of a kind of disease resistance paddy rice |
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| CN105210860A true CN105210860A (en) | 2016-01-06 |
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| CN201410270383.4A Pending CN105210860A (en) | 2014-06-18 | 2014-06-18 | The breeding method of a kind of disease resistance paddy rice |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113692804A (en) * | 2021-10-08 | 2021-11-26 | 江苏千重浪农业科技发展有限公司 | Breeding method of high-quality high-yield disease-resistant rice variety |
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2014
- 2014-06-18 CN CN201410270383.4A patent/CN105210860A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113692804A (en) * | 2021-10-08 | 2021-11-26 | 江苏千重浪农业科技发展有限公司 | Breeding method of high-quality high-yield disease-resistant rice variety |
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Addressee: Chen Zuqing Document name: Notification of Publication of the Application for Invention |
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Application publication date: 20160106 |