CN102960233B - Production method of hybrid rice seed deep 95 excellent 837 - Google Patents

Abstract

The invention belongs to the field of hybrid rice seed production. The invention relates to a method for production of a hybrid rice seed ''deep 95 excellent 837'' by taking a sterile line ''deep 95A'' and a restorer line ''Jia Z837R'' as male parents. The method includes the steps of: inbred line selection, safety isolation, timely sowing, sowing date regulation, use of ''920'' technology and artificial supplementary pollination, roguing, and timely harvest. The hybrid has the characteristics of high and stable yield, strong disease resistance, and high biological output.

Description

Dark 95 excellent 837 the production method of a kind of hybrid rice seeds

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 the growth of paddy purchasing price, 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 increased by 1.9% than upper one year, 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 the popularization of new rice variety 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 climatic zone is various.And in recent years, the natural calamity of China takes place frequently, and it is occurred frequently that damage by disease and insect is, diversity state.Breeding high-yield, wide suitable, how anti-new rice variety are the important leverages of guarantee 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 ensure the safety in rice in China market, selects outstanding hybrid rice seed, it is also the extremely urgent task of rice in China breeding man.

Summary of the invention:

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

Hybrid rice seeds production method provided by the present invention: comprise selection inbred line, safety isolation, begin sowing in good time, regulate date of seeding, " 920 " technology of use and artificial supplementary pollination, roguing, results, utilize male sterile line " dark 95A " for maternal in good time, restorer " good Z837R " is male parent, produces hybrid rice seed " dark 95 excellent 837 ".

Hybrid rice kind " dark 95 excellent 837 " is to take the rice varieties that early rice main producing region, In Middle And Lower Reaches of Changjiang River is breeding goal seed selection.

For selecting rice varieties of the present invention, the scientific research personnel of company select at present 30 hybrid rice seeds that 30 hybrid rice seeds before rank is promoted in this region and golden agriculture China selected totally 60 hybrid rice seeds carry out variety comparative test.The yielding ability of the hybrid rice seed that goes out there is male sterile line in above-mentioned hybrid rice kind blood relationship " dark 95A " or restorer " good Z837R " by test data analyzer in this area is good, disease resistance is strong, and comprehensive resistance is good.

Therefore male sterile line " dark 95A " be take for maternal in golden Nong Hua company, for restorer, " praising Z837R " is male parent; Produce hybrid rice kind " dark 95 excellent 837 ".

Wherein said biomaterial " dark 95A " draws from Longgang of Shenzhen City research institute of Tsing-Hua University of national hybrid rice ERC, and this kind has been applied for the protection of new variety of plant power, kind power application number: 20090276.4.

" academy of agricultural sciences, good Z837R ”Yin Zi Jiaxing, this kind has been applied for the protection of new variety of plant power to wherein said biomaterial, kind power application number: 20111044.9.

It is maternal that the present invention utilizes " dark 95A ", take " good Z837R " be male parent production hybrid rice seed " dark 95 excellent 837 " feature as:

Bud scale look aubergine, leaf sheath look purple, leaf color is green; In leaf length of blade second from the bottom, leaf width of blade second from the bottom is wide, the angle of leaf blade tip second from the bottom and stem is open and flat, leaf blade fine hair second from the bottom is close, leaf auricle look purple second from the bottom, leaf tip of a leaf length second from the bottom is short, and leaf tip of a leaf shape two second from the bottom is split, leaf tip of a leaf look white second from the bottom, leaf pulvinus look purple second from the bottom; Sword-like leave blade curvature without; Culm length is long, in stem stalk thickness, and in stem stalk stem number, stem culm base stipes bag, the colors green of stem stalk joint, stem stalk internode look green; In sword-like leave length of blade, sword-like leave width of blade is wide, and in the middle of sword-like leave blade angle, in leaf number of the main culm, spike length degree is long, and fringe degree of stretching out is extracted out better, fringe type osculant, and Secondary Branch stalk is many, in the middle of the vertical shape of fringe; In stem stalk resting bud vigor; Grain husk shell fine hair is many, clever sharp look brown; In number of grain per ear, arrive many, in ripening rate, in seed holding; Sterile lemma length is short, and sterile lemma look stalk is yellow, and clever shell look yellow; Grain length is long, and in grain width, grain shape elongated shape, in weight of thousand grain; Brown rice length is long, in brown rice width, and brown rice shape spindle; Plant color of the leather light yellow.Feature and the good effect of the rice paddy seed that hybrid rice production method of the present invention obtains:

The rice varieties that the present invention produces, 115.9 centimetres of plant heights, seedling stage, growing way was prosperous, in tillering ability, the percentage of earbearing tiller is high, and cane is sturdy, lodging resistant force is strong, and Ye Kuanzhong is upright, leaf look light green color, fringe is large, and grain is many, grain is heavy, and mu is fringe 16.8 ten thousand effectively, 27 centimetres of spike lengths, 165.8 of grain number per spikes, ripening rate 80%, 27.85 grams of thousand kernel weight.Grain is yellow, polished rice rate 68.5%, the white rate 34% of chalk, chalkiness degree 3.4, amylose content 12.3%, the 118.5 days time of infertility.

Within 2010, participate in the comparison experiment of company's Content Organizing, 586.3 kilograms of average yield per mus, than contrast, day excellent China accounts for volume increase 5.3%; Within 2011, participate in intra-company's comparison experiment, average yield per mu 591.5, than contrast volume increase 5.3%.See attached list 2, subordinate list 3.

Good effect of the present invention is:

1, output is high, and output surpasses on Vehicles Collected from Market main breed more than 5.2%;

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.

Embodiment

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 crossbreed of the present invention " dark 95 excellent 837 "

Since 2007, golden Nong Hua company was collected in the rice varieties of first 30 of the In Middle And Lower Reaches of Changjiang River market ranking, and selected golden Nong Hua company 30 hybrid rice varieties of assembly voluntarily, carried out Engineering Breeding seed selection engineering.

According to being about to the plantation place of Cultivars and the weather conditions of place planting site, damage by disease and insect segmentation breeding objective is swung to and is elected.In Hainan, 10 experiment centres such as Guangdong, Changsha, Chongqing, Chengdu, Wuhan, six peaces, Hefei carry out field plot test experiment to the kind of collecting, experimental data is analyzed fully.

By the hybrid rice seed of planting experiment and parent's thereof disease or pest resistance and applicable weather conditions are analyzed; And parent's coordinate force is identified.Select " dark 95A " and carry out assembly with " good Z837R ", produce crossbreed rice paddy seed " dark 95 excellent 837 ".

The rice paddy seed that the present invention produces " dark 95 excellent 837 " was participated in intra-company's comparison experiment at 2010,2011, show high yield, outstanding, the comprehensive drag of yielding ability is strong, than the excellent China in check variety sky, accounts for average volume increase 5.2%.

1, Quality Identification

2012 Nian Jing Ministry of Agriculture food quality supervision verification test centers (Wuhan) identify the quality of " dark 95 excellent 837 ", and result is: in Table 1

Table 1, Quality Detection

Cheng Jian unit

Sample number into spectrum

Polished rice rate

The white grain of chalk rate

Chalkiness degree

Glue denseness

Amylose

Transparency

Wuhan

2012WS0421

68.5%

34%

3.4

92

12.3%

1

2, output performance:

1) company in 2010 produces and compares result of the test

586.3 kilograms of the crossbreed per mu yields that variety comparative test result in 2010 the present invention produces, than contrast, day excellent China accounts for volume increase 5.3%, in Table 2.

2) company's comparison experiment result in 2011

Within 2011, participate in the variety comparative test of the 10Ge of company experiment station, 591.5 kilograms of average yield per mus, contrast day excellent China accounts for 562.8 kilograms of average yield per mus, on average increases production 5.3%, in Table 3.

Table 2 each test site yield data unit: KG of company in 2010

Sequence number	Hold pilot	Per mu yield	Contrast day excellent China accounts for	Than CK ±
					1	Sanya, Hainan experiment station	577.2	533.1	8.3%
2	Experiment station, Guangzhou Guangdong	586.7	546.1	7.4%

3	Experiment station, Changsha	577.2	570.1	0.0%
					4	Experiment station, Chengdu, Sichuan	588.1	555.0	5.9%
5	Experiment station, Wuhan, Hubei	580.4	569.3	1.9%
					6	Yancheng, Jiangsu Province experiment station	581.5	556.3	4.5%
7	Experiment station, Nanchang	592.7	555.3	6.7%
					8	Experiment station, Yichuan	591.4	571.3	3.5%
9	Experiment station, Shangrao, Jiangxi	598.7	559.3	7.0%
					10	Experiment station, Jing Zhou, Hubei	589.5	548.2	7.5%

Table 3 each test site yield data unit: KG of company in 2011

Sequence number	Hold pilot	Per mu yield	Contrast day excellent China accounts for	Than CK ±
					1	Liu An experiment station, Anhui	585.5	550.2	6.3%
2	Experiment station, Hefei ,Anhui	595.5	560.1	6.4%
					3	Experiment station, Nanjing	583.5	553.2	5.5%
4	Zhejiang Hangzhou experiment station	593.6	563.4	5.4%
					5	Experiment station, Wuhu	589.2	559.2	5.4%
6	Yancheng, Jiangsu Province experiment station	599.6	561.3	6.9%
					7	Experiment station, Nanchang	589.5	569.3	5.4%
8	Experiment station, Yichuan	591.3	571.2	3.5%
					9	Experiment station, Shangrao, Jiangxi	590.3	568.2	4.1%
10	Experiment station, Jing Zhou, Hubei	597.3	572.21	4.4%

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

1) safety isolation: space length >500 rice, or other rice varieties of the 15 days above heading flowering periods of being separated by carries out production of hybrid seeds isolation.

2) begin sowing in good time: first phase male parent is than maternal Zao inserting 25～30 days, or leaf order difference 6-7 leaf, or effective accumulated temperature Parent differs from 200 ℃, 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, and when duplicate rows is planted, aisle is 33.3 centimetres, and parental is 1:10 ~ 12.

4) use " 920 " technology and artificial supplementary pollination.5%-10% sprays 920 during maternal heading, and 20 grams of first every mu of sprays, spray 3-5 days afterwards continuously, spray 5 grams at every turn, total consumption 30-45 gram.From fringe phase beginning to neat fringe, catch up with pollen to carry out artificial supplementary pollination whole flowering stage every day at florescence.

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

6) roguing technology: pull out form and maternal " dark 95A " discrepant plant whole breeding time, contain and spend latter about 25 days to gather in the crops hybrid seed.

Embodiment 3: the culture technique of crossbreed of the present invention

1) begin sowing in good time, cultivate strong seedling.According to when ground temperature light resources reasonable arrangement date of seeding.Mu sowing quantity 1-1.5KG, one one heart stage of leaf of rice shoot, sprays the short tiller of the strong seedling of paclobutrazol, thin even broadcasting, 35 days length of time rice seedlings grow were advisable with interior.5 * 8 cun of first-class fertility field seeding row spacings, 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) damage by disease and insect such as attention control rice blast, false smut.

Claims (7)

1. a production method for hybrid rice seeds " dark 95 excellent 837 ", is characterized in that selecting rice sterile line " dark 95A " to do maternal, with rice restorer " good Z837R ", does male parent, produces hybrid rice seeds " dark 95 excellent 837 ".

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

3. method according to claim 1, interval sowing, is characterized in that first phase male parent is than maternal Zao slotting 25-30 days, or the poor 6-7 leaf of leaf age, or effective accumulated temperature Parent differs from 200 ℃, 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.

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 is 16.7 centimetres, and when duplicate rows is planted, aisle is 33.3 centimetres, and parental is 1:10 ~ 12.

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

6. method according to claim 1, is characterized in that preventing and treating continuously kernel smut 2-3 times at cut phase, fringe phase beginning and full heading time.

7. according to the method described in claim l, it is characterized in that pulling out whole breeding time External Characters and maternal " dark 95A " discrepant plant, contain and spend latter 25 days results hybrid seeds.