CN105594584A - Production method of hybrid rice five-excellence Yuenongsimiao - Google Patents

Abstract

The present invention belongs to the field of heterosis utilization, and in particular provides a production method of hybrid rice five-excellence Yuenongsimiao. The method uses a rice sterile line Wufeng A as a female parent and a rice restorer line Yuenongsimiao as a male parent to produce hybrid rice seed five-excellence Yuenongsimiao. The cenospecies has the characteristics of high and stable yield, strong disease resistance and high biological yield.

Description

The production method of the excellent Guangdong agriculture of a kind of hybrid rice seed five silk seedling

Technical field:

The present invention relates to paddy rice cross breeding seed production field, relate to specifically the production method of a kind of hybrid rice.

Background technology:

China is Rice Cropping big country, in recent years along with the subsidy policy of country to Farming, and paddy purchasing priceGrowth, Monitoring of Paddy Rice Plant Area has had stable increase. Within 2011, according to Ministry of Agriculture's investigation, national Monitoring of Paddy Rice Plant Area is than upper oneYear increases by 1.9%, and wherein early rice cultivated area reaches 8,869 ten thousand mu, increases by 1,750,000 mu than last year. The per mu yield of paddy rice is also along with waterThe popularization of rice new varieties and the breeding corresponding cultivation techniques height of constantly bringing forth new ideas.

But China is populous nation, the four corners of the world, Rice Cropping region is vast in territory, and plantation climate zone is various. And in recent yearsCome, the natural calamity of China takes place frequently, and it is occurred frequently that disease and pest is, diversity state. Breeding high-yield, wide suitable, how anti-new rice varietyIt is the important leverage that ensures Food Security in China.

And along with the establishment of company of exotic industry, the introducing of its external advanced breeding technique and paddy rice resource, in order to ensureThe safety in rice in China market, selects outstanding hybrid rice seed, is also the extremely urgent task of rice in China breeding man.

Summary of the invention:

The object of the invention is to the hybrid rice for ensureing that our grain security and rice in China market safety are cultivatedNew combination, and a kind of production method of the hybrid rice seeds of producing high yield is provided.

Hybrid rice seeds production method provided by the present invention: comprise selection self-mating system, safety isolation, begin sowing in good time,Regulate date of seeding, use " 920 " technology and artificial supplementary pollination, roguing, results in good time, utilize sterile line " five rich A " for femaleThis, restorer " Guangdong agriculture silk seedling " is male parent, produces hybrid rice seed " five excellent Guangdong agriculture silk seedlings ".

Hybrid rice kind " five excellent Guangdong agriculture silk seedlings " is taking late rice main producing region, In Middle And Lower Reaches of Changjiang River as breeding goal seed selectionRice varieties.

For selecting rice varieties of the present invention, the scientific research personnel of company selects 30 water before rank is promoted in this region at presentTotally 60 hybrid rice seeds of 30 hybrid rice seeds that rice hybridization kind and golden agriculture China have selected carry out variety comparative test. By examinationTest data analysis and go out the hybrid rice seed that has sterile line " five rich A " or restorer " Guangdong agriculture silk seedling " in above-mentioned hybrid rice kind blood relationshipYielding ability in this area is good, disease resistance is strong, and comprehensive resistance is good.

Therefore golden Nong Hua company is taking sterile line " five rich A " as maternal, taking restorer " Guangdong agriculture silk seedling " as male parent; Produce hybridizationRice seed " five excellent Guangdong agriculture silk seedlings ".

Wherein said biomaterial sterile line " five rich A " draws from Inst. of Rice, Guangdong Academy of Agricultural Sciences this kindIn " guangdong agricultural science " 2009 the 08th phases " feature of middle high-quality indica cms line five rich A and high yield and high quality reproduction technique "In open as breeding material.

Restorer " Guangdong agriculture silk seedling " is drawn from Inst. of Rice, Guangdong Academy of Agricultural Sciences, and this kind has obtained new variety of plantPower, right number: 20130895.9.

It is maternal that the present invention utilizes " five rich A ", hybrid rice seed " the five excellent Guangdong agriculture silks of producing taking " Guangdong agriculture silk seedling " as male parentSeedling " feature be:

Plant type is moderate, and cane is sturdy, grain close, and sword-like leave is straight and upright, and leaf look dark green, and the ripe phase discolors. Plant height 108.6CM, everyMu is fringe 18.7 ten thousand effectively, 152.6 of every total grain panicle numbers, setting percentage 86.1%, 26.2 grams of mass of 1000 kernel. Field rice blast resistance is strong,Appearance Quality of Paddy Rice is good.

Feature and the good effect of the rice paddy seed that hybrid rice production method of the present invention obtains:

Within 2013, participate in the comparison experiment of company's Content Organizing, 505.8 kilograms of average yield per mus, than the volume increase of contrast Tianyou9986.7%; Within 2014, participate in intra-company's comparison experiment, average yield per mu 489.5, than contrast volume increase 5.4%. See attached list 1, subordinate list2。

Good effect of the present invention is:

1, output is high, and output exceedes on Vehicles Collected from Market main breed more than 5.4%;

2, resistance, middle blast resisting, high against-plant hopper and leaf blight;

3, wide adaptability, is adapted at the middle and lower reach of Yangtze River and how plant South China.

Brief description of the drawings

Fig. 1 is the concrete Breeding Process of cenospecies of the present invention " five excellent Guangdong agriculture silk seedlings ".

Detailed description of the invention

This embodiment is used for illustrating the present invention below, but is not used for limiting the scope of the invention.

Embodiment 1: the concrete Breeding Process of cenospecies of the present invention " five excellent Guangdong agriculture silk seedlings "

Since 2009, golden Nong Hua company was collected in the paddy rice product of first 30 of the In Middle And Lower Reaches of Changjiang River market rankingKind, and select golden Nong Hua company 30 hybrid rice varieties of assembly voluntarily, carry out Engineering Breeding seed selection engineering.

Basis is by the plantation place of Cultivars and the weather conditions of place planting site, and disease and pest segments breeding objectiveSwing to and elect. In Hainan, 10 experiment centres such as Guangdong, Changsha, Chongqing, Chengdu, Wuhan, six peaces, Hefei enter the kind of collectingThe experiment of row field plot test, analyzes fully to experimental data.

Divide by the hybrid rice seed to planting experiment and parent's thereof disease or pest resistance and applicable weather conditionsAnalyse; And parent's coordinate force is identified. Select " five rich A " and carry out assembly with " Guangdong agriculture silk seedling ", produce cenospecies rice seedSon " five excellent Guangdong agriculture silk seedlings ".

The rice paddy seed " five excellent Guangdong agriculture silk seedlings " that the present invention produces was participated in intra-company's product than real at 2013,2014Test, show outstanding, the comprehensive drag of high yield, yielding ability strong, on average increase production 6.1% than check variety Tianyou998.

Output performance

1) company in 2013 produces and compares result of the test

Within 2013, participate in the comparison experiment of company's Content Organizing, 505.8 kilograms of average yield per mus, than the volume increase of contrast Tianyou9986.7%; In table 1.

2) company's comparison experiment result in 2014

Within 2014, participate in intra-company's comparison experiment, average yield per mu 489.5, than contrast volume increase 5.4%. In table 2.

Table 12013 year each testing site yield data unit of company: KG

Sequence number	Hold pilot	Per mu yield	Contrast Tianyou998	Than CK ±
					1	Sanya, Hainan experiment station	509.2	480.9	6.0％
2	Experiment station of Guangzhou Guangdong	518.6	440.1	12.7％
					3	Changsha experiment station	485.5	465.4	4.3％ 2 -->
4	Chengdu, Sichuan experiment station	479.1	453.1	5.70％
					5	Wuhan, Hubei experiment station	535.3	460.3	12.3％
6	Yancheng, Jiangsu Province experiment station	515.5	455.9	7.10％
					7	Nanchang experiment station	506.7	525.3	13.2％
8	Yichuan experiment station	486.4	515.3	-5.6％
					9	Shangrao, Jiangxi experiment station	498.7	490.6	1.6％
10	Jing Zhou, Hubei experiment station	487.5	445.9	9.4％

Table 22014 year each testing site yield data unit of company: KG

Embodiment 2: the production technology of cenospecies of the present invention

1) safety isolation: space length > 500 meters, or other rice varieties of the more than 15 days heading flowering period of being separated by carries outProduction of hybrid seeds isolation.

2) begin sowing in good time: first phase male parent is than maternal Zao inserting 25～30 days, or the poor 6-7 leaf of leaf order, or effective accumulated temperature fatherFemale parent differs from 200 DEG C, and the second phase, the third phase are separated by 7 days with the first phase respectively, or two phase male parents are separated by 10 days.

3) rational close planting, suitable row ratio. Maternal seeding row spacing is 16.7 × 10 centimetres, and male parent spacing in the rows is 16.7 centimetres, duplicate rows33.3 centimetres, aisle while planting, parental is 1:10～12.

4) use " 920 " technology and artificial supplementary pollination. 5%-10% sprays 920 when maternal heading, first every mu of spray 20Gram, spray continuously afterwards 3-5 days, spray 5 grams, total consumption 30-45 gram at every turn. Catch up with whole florescence every day at florescence from fringe phase beginning to neat fringePollen carries out artificial supplementary pollination.

5) prevent and treat kernel smut technology: prevent and treat continuously grain at cut phase, fringe phase beginning and full heading time with the black spirit of going out (producer's medicine)Smut 2-3 times.

6) roguing technology: pull out form and maternal " five rich A " discrepant plant whole breeding time, contain and spend latter 25 daysLeft and right results hybrid seed.

Embodiment 3: the cultivation technique of cenospecies of the present invention

1) begin sowing in good time, cultivate strong seedling. According to working as ground temperature light resources reasonable arrangement date of seeding. Mu sowing quantity 1-1.5KG, seedlingOne one heart stage of leaf of seedling, sprays the short tiller of the strong seedling of paclobutrazol, thin even broadcasting, and 35 days length of time rice seedlings grow were advisable with interior. First-class fertility field seeding row spacing 5× 8 cun, 4 × 9 cun of below average fertility field seeding row spacings, guarantee several seedling 8-10 ten thousand.

2) heavy base fertilizer application is answered in fertilising, early chases after tillering fertilizer, after dry field rehydration, mends potassium application, and the general mu in land for growing field crops is executed purity nitrogen 13-15KG. Mid-term is seedling dry field enough, and later stage alternation of wetting and drying is gathered in the crops the first seven day and cut off the water supply, in good time harvesting.

3) disease and pest such as attention control rice blast, false smut.

Claims (7)

1. a production method for the excellent Guangdong agriculture of hybrid rice seed five silk seedling, is characterized in that selecting rice sterile line " five rich A " to doFemale parent, does male parent with rice restorer " Guangdong agriculture silk seedling ", produces hybrid rice seeds " five excellent Guangdong agriculture silk seedlings ".

2. method according to claim 1, is characterized in that safe isolation distance >=500 meter, or with described ParentHeading flowering period is separated by and within 15 days, is carried out above production of hybrid seeds isolation.

3. method according to claim 1, interval sowing, is characterized in that first phase male parent is than the maternal Zao 25-30 days of inserting,Or the poor 6-7 leaf of leaf age, or effective accumulated temperature Parent differs from 200 DEG C, and the second phase, the third phase are separated by 7 days with the first phase respectively, orTwo phase male parents are separated by 10 days.

4. method according to claim 1, is characterized in that maternal seeding row spacing is 16.7 × 10 centimetres, and male parent spacing in the rows is16.7 centimetres, 33.3 centimetres, aisle when duplicate rows is planted, parental is 1:10～12.

5. method according to claim 1, sprays 920, first every mu of spray while it is characterized in that the maternal heading of 5%-10%20 grams, spray continuously afterwards 3-5 days, spray 5 grams, total consumption 30-45 gram at every turn.

6. method according to claim 1, is characterized in that preventing and treating continuously the black powder of grain at cut phase, fringe phase beginning and full heading timeSick 2-3 times.

7. according to the method described in claim l, it is characterized in that pulling out whole breeding time External Characters has with maternal " five rich A "The plant of difference, contains and spends latter 25 days results hybrid seeds.