CN1806519A - Method for cultivating dwarf male sterile wheat - Google Patents
Method for cultivating dwarf male sterile wheat Download PDFInfo
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- CN1806519A CN1806519A CN 200510002391 CN200510002391A CN1806519A CN 1806519 A CN1806519 A CN 1806519A CN 200510002391 CN200510002391 CN 200510002391 CN 200510002391 A CN200510002391 A CN 200510002391A CN 1806519 A CN1806519 A CN 1806519A
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Abstract
The invention discloses a method for breeding nanism wheat, comprising following steps: (1) employing Nongda 139 of sterility as female parent and dwarfing 1 wheat as male parent for cross breeding, getting F1 generation, from which sifting nanism sterile wheat; (2) test crossing the F1 generation wheat with Nongda 139 and getting hybrid, planting at least 4000-5000 strains of this seed, sifting and getting the product. The parent wheat of Nongda 139 is characterized by through masculinity abortive and high fruit generating rate of hetero-cross, and the dwarfing 1 is characterized by strong straw-reduction action and easy to identify, and the product greatly increases scientific and application value of wheat Nongda 139.
Description
Technical field
The present invention relates to a kind of method of cultivating dwarf male sterile wheat.
Background technology
Male sterile is crops, particularly the instrument of self pollination crop large-scale production crossbreed.The dwarfing male sterile wheat is the high male sterile material of finding at rural area, Shanxi Province wheatland in loyal beautiful 1972 of peasant technician.The sterility of dwarfing male sterile wheat is controlled by a dominant gene, gene symbol was Ta1 (Deng Jingyang etc. originally, the discovery of wheat Dominant Male Sterility Gene and utilization, Acta Agronomica Sinica, 1980, (2): 85-98), the gene symbol of international registration is Ms2 (Liu Binghua etc., A dominant gene for male-sterility in wheat, plant Breeding, 1986,97:204-209).The male abortion of dwarfing male sterile wheat is thorough, and sterility is stable, and open pollination ripening rate height is one of the most distinctive plants male sterility material of finding so far (Liu Binghua, 1994, wheat male nucleus sterile line and recurrent selection breeding, a Chinese agriculture science and technology publishing house).The Dominant Male Sterility Gene Ms2 of dwarfing male sterile wheat (Ta1) is positioned on the 4D the short arm of a chromosome, apart from kinetochore 31.16cM (Liu Binghua etc., the chromosome set location of wheat Dominant Male Sterility Gene Ta1 and the analysis of end body, Chinese science (B collects), 1986,2:157-165).
The dwarfing male sterile wheat must arrive to ear and just can identify sterile strain and can educate strain to flowering stage, also will manually make a mark for sterile strain in this period simultaneously, could obtain the crossbreed in the sterile strain when results.In the recurrent selection population of dwarfing male sterile wheat, sterile strain is close with the average height that can educate strain, but it is many that sterile strain accepts to be higher than the chance of self plant pollen, and the low received chance of strain pollen is few, cause the recurrent selection population plant height that trend of rising is gradually arranged, be unfavorable for selecting the wheat breed of high yield of short stem.The appearance of dwarf male sterile wheat not only can be discerned sterile strain ahead of time and can educate strain, saves a large amount of work of marking to sterile strain, and avoids colony's plant height to raise gradually in recurrent selection breeding.
Agricultural university's 139 wheats are that Beijing Agricultural University makes up big 1817 offsprings of 183/ Wei Er of agricultural university // 30983/ swallow from double cross, through the wheat breed that the pedigree seed selection forms, are pure lines, only a kind of genotype, it shows winter habit, 90 centimetres of plant heights, about tip awn, white shell, white grain, thousand kernel weight 38 grams, ripe evening partially.Wheat of short change is the natural mutation of short stem that the Xian City, Shanxi Province institute of agricultural sciences selects morning of short stem from wheat breed, is one of important short source of wheat.People such as Izumi are Rht10 to the dominant dwarf unnamed gene of No. one, short change, and are positioned on the 4D the short arm of a chromosome.Short change is the stable wheat breed that isozygotys No. one, has only a kind of genotype, phenotype: about 30 centimetres of plant heights, and winter habit, late-maturing, about long awns, rectangular fringe, white shell, white grain, thousand kernel weight 32 grams.
Dwarf male sterile wheat is the dwarfing male sterile wheat with dwarf gene mark.In dwarf male sterile wheat, Dominant Male Sterility Gene Ms2 and dominant dwarf gene Rht10 are chain very tight on the 4D the short arm of a chromosome, and exchange rate only has 0.18%.Dwarf male sterile wheat is accepted the pollen of other wheat breed, and a semi-dwarf mutant strain (about 48cm) and half non-strain of short stem are arranged in its offspring colony.Strain performance male sterile of short stem, non-strain performance male-fertile of short stem.The plant height difference of strain of short stem and non-strain of short stem comes into plain view, and the shooting stage can be identified male sterile and male-fertile standing up.Dwarf gene Rht10 in the dwarf male sterile wheat is insensitive to gibberellic acid reaction, handles through gibberellic acid, just can tell the young shoot that contains the Rht10 gene (short and strengthen) and not contain the young shoot (long and weak) of Rht10 gene in the young shoot phase.Short and strong young shoot develops into sterile strain later on, and long and weak young shoot develops into can educate strain.
Dwarf male sterile wheat is desirable wheat breeding instrument, no matter adopts recurrent selection, still adopts continuous hybrid, can select improved seeds effectively.In recurrent selection, by the Artificial Control pollination, various different parents' excellent genes is introduced recurrent selection population, before blooming, eliminate bad educated strain in the colony simultaneously, the excellent genes frequency in the colony is improved constantly.In addition, by educating the different friendship of strain and sterile strain in the colony, excellent genes is recombinated mutually.Through selection and different friendship several times, therefrom select the good strain of educating again, through the selfing purifying, final seed selection becomes improved seeds.Utilize dwarf male sterile wheat seed selection improved seeds not only to save trouble but also effective, technology is grasped easily simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of method of cultivating dwarf male sterile wheat.
The method of cultivation dwarf male sterile wheat provided by the present invention may further comprise the steps:
1) being female parent with dwarfing male sterile agricultural university 139 wheats, is that male parent is hybridized with wheat of short change, obtains F
1In generation, is from this F
1Filter out sterile wheat of short stem in generation;
2) with the F in the step 1)
1Carry out test cross for sterile wheat of short stem and agricultural university's 139 wheats, obtain hybrid seed, this seed is planted the 4000-5000 strain at least, the of short stem sterile wheat that screening obtains is dwarf male sterile wheat.
For the ease of screening, step 2) described in hybrid seed before plantation, plant 2500 strains at least through the short and strong young shoot of gibberellic acid processing selecting.
Described gibberellic acid processing method is the moistening seed of the gibberellic acid aqueous solution of 30mg/L for the 50g wheat seed with 40mL concentration, incubated at room temperature 5-6 days.After handling through gibberellic acid, select short and strong young shoot, to cultivate to full heading time, the of short stem sterile wheat that filters out is dwarf male sterile wheat.
The present invention adopts the large group testcross and screening, and in conjunction with the method that gibberellic acid is handled, successfully selects dwarf male sterile wheat.Parent's dwarfing male sterile agricultural university 139 wheats that the present invention utilized have the advantage that male abortion is thorough, outcrossing seed-setting rate is high, and short change has the characteristics that the stalk effect is strong, be convenient to discern of falling for No. one, the dwarf male sterile wheat that filters out like this, greatly abundant and improved the science and the using value of dwarfing male sterile wheat.
Embodiment
Experimental technique among the following embodiment is conventional method if no special instructions.
Embodiment 1. cultivates dwarf male sterile wheat
Dwarfing male sterile agricultural university 139 wheats, be to be the samsara male parent,, and select the sterile continuous material of backcrossing and obtaining that involves in a criminal case from the offspring with the dwarfing male sterile wheat hybridizing with agricultural university 139, the similar agricultural university of various proterties 139 wheats, just the offspring always isolates half male sterile plant and half male fertile plant.
(genotype Ms2ms2 agricultural university 139) is female parent with dwarfing male sterile agricultural university 139 wheats, and No. 1 homozygote of short change (Rht10Rht10) (available from variety source institute of the Chinese Academy of Agricultural Sciences) wheat is male parent.Allow homozygote of short change of plant height 30cm pollinate the 260 strain F that obtain for the dwarfing male sterile agricultural university 139 of plant height 90cm
1In generation, 128 strains performance (45cm) of short stem male sterile, all the other 132 strains performance (45cm) of short stem male-fertiles, the ratio of the two is 1: 1.Again with F
1The plant height that obtains is that the of short stem sterile strain of 45cm is maternal, is that male parent is carried out test cross with agricultural university 139 wheats (ms2ms2rht10rht10), obtains hybrid seed.Then, this seed is carried out following any processing:
1) test cross seed is pressed line-spacing 30cm, and spacing in the rows 10cm point is sowed at (enlarging seeding row spacing is plant division for convenience) in the experimental field, obtains 5216 strain wheats.The fertility of high stalk strain of full heading time scrutiny and strain male flower of short stem.It is high stalks that the result has 2664 strains, and 2552 strains are strains of short stem.2632 strains performance male sterile is arranged in the high strain, and 32 strains are acted normally and can be educated; 2551 strains are male-fertiles in the short strain, and it is male sterile having only 1 strain.After this 1 strain sterile strain of short stem was pollinated with long-stalked variety agricultural university 139, its offspring had a semi-dwarf mutant male sterile plant, and half high stalk can be educated strain, and this sterile wheat of short stem is exactly a dwarf male sterile wheat.
2) getting 5000 test cross seeds and be placed in the porcelain dish that is lined with filter paper, is the gibberellic acid solution impregnation seed of 30mg/L with 200mL concentration, makes its germination and growth at room temperature, cultivates 5 days, selects short and strong young shoot, totally 2428.These young shoots are transplanted in field trial ground by line-spacing 30cm, spacing in the rows 10cm.When heading is bloomed, check that by strain each plant all is the strain of short stem about 45cm, wherein 2426 strains are acted normally and can be educated, and it is male sterile that 2 strains are only arranged.The offspring of (sterile strain of short stem is bagging in time, in order to avoid the string powder) this 2 strain sterile strain of short stem, half remains of short stem sterile, and half then high stalk can be educated.This sterile wheat of short stem is exactly a dwarf male sterile wheat.
About this dwarf male sterile wheat plant height 45cm, full heading time grain husk shell opens, and tassel is fluffy, and flower pesticide is degenerated, interior WUHUAFEN grain.Pollen mother cells is undesired, is difficult to see normotrophic tetrad.Root tip chromosomes is normal, all is 42.
This dwarf male sterile wheat is pollinated offspring (F with long-stalked variety agricultural university 139
1) colony be 3917 strains, sterile strain 1874 strains wherein of short stem, of short stemly educate strain 2 strains, high stalk can be educated strain 2036 strains, sterile strain 5 strains of high stalk.Parental form, be that sterile strain of short stem and high stalk can be educated strain and accounted for the overwhelming majority, recombinant type then is an only a few, illustrate that dwarf gene Rht10 and male sterile gene Ms2 are close linkages, respectively Ms2 and Rht10 are positioned the result of 4D the short arm of a chromosome again according to Liu Binghua etc. and Izumi etc., then obtain dwarf gene Rht10 and male sterile gene Ms2 closely linked result on the 4D the short arm of a chromosome.According to recombinant type (5 strain) proportion in total group (3917 strain), calculating exchange rate is 0.18% again.
Claims (4)
1, a kind of method of cultivating dwarf male sterile wheat may further comprise the steps:
1) being female parent with dwarfing male sterile agricultural university 139 wheats, is that male parent is hybridized with wheat of short change, obtains F
1In generation, is from this F
1Filter out sterile wheat of short stem in generation;
2) with the F in the step 1)
1Carry out test cross for sterile wheat of short stem and agricultural university's 139 wheats, obtain hybrid seed, this seed is planted the 4000-5000 strain at least, the of short stem sterile wheat that screening obtains is dwarf male sterile wheat.
2, method according to claim 1 is characterized in that: step 2) described in hybrid seed before plantation, plant 2500 strains at least through the short and strong young shoot of gibberellic acid processing selecting.
3, method according to claim 2 is characterized in that: described gibberellic acid processing method is the moistening seed of the gibberellic acid aqueous solution of 30mg/L for the 50g wheat seed with 40mL concentration, incubated at room temperature 5-6 days.
4, method according to claim 3 is characterized in that: after handling through gibberellic acid, select short and strong young shoot, cultivate to full heading time, the of short stem sterile wheat that filters out is dwarf male sterile wheat.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100023911A CN100389647C (en) | 2005-01-19 | 2005-01-19 | Method for cultivating dwarf male sterile wheat |
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| CNB2005100023911A CN100389647C (en) | 2005-01-19 | 2005-01-19 | Method for cultivating dwarf male sterile wheat |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102440181A (en) * | 2011-10-12 | 2012-05-09 | 河南许丰种业有限公司 | Method for breeding high-quality wheat |
| CN103563737A (en) * | 2013-11-04 | 2014-02-12 | 邓世雄 | Hybridizing and breeding method of dwarf winter wheat |
| CN106386147A (en) * | 2016-10-12 | 2017-02-15 | 漯河市农业科学院 | Method for improving parental hybridization flower synchronization of different varieties of wheat and application thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024042199A1 (en) * | 2022-08-26 | 2024-02-29 | KWS SAAT SE & Co. KGaA | Use of paired genes in hybrid breeding |
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2005
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102440181A (en) * | 2011-10-12 | 2012-05-09 | 河南许丰种业有限公司 | Method for breeding high-quality wheat |
| CN103563737A (en) * | 2013-11-04 | 2014-02-12 | 邓世雄 | Hybridizing and breeding method of dwarf winter wheat |
| CN106386147A (en) * | 2016-10-12 | 2017-02-15 | 漯河市农业科学院 | Method for improving parental hybridization flower synchronization of different varieties of wheat and application thereof |
| CN106386147B (en) * | 2016-10-12 | 2020-02-11 | 漯河市农业科学院 | Method for promoting meeting of different varieties of wheat parents in hybrid florescence and application thereof |
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| CN100389647C (en) | 2008-05-28 |
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