CN1079861A - Male-sterile line breeding method for allo-plasm of Chinese cabbage - Google Patents

Abstract

A kind of selection of allo-plasm of Chinese cabbage male sterile line belongs to Chinese cabbage heterosis utilization field.It is characterized in that with cabbage type rape Pori horse be the sterile cytoplasm donor, is acceptor with Chinese cabbage, and by interspecific cross, the method for continuous backcross has been bred the cabbage cytoplasm male sterile line CMS with cabbage type rape sterile cytoplasm _3411-7This male sterile line sterility is stable, and sterile plant rate is 100%, and sterile degree is more than 95%, and the hybrid seed yield height, and saving of labor, cost are low.The crossbreed of its preparation is assorted 13, assorted 14 purity are good, and the hybrid rate height is disease-resistant, high yield, and amount of increase in production is between 10-50%.

Description

Male-sterile line breeding method for allo-plasm of Chinese cabbage

The invention belongs to Chinese cabbage heterosis utilization field.

The main path of brassicaceous vegetable crop (comprising Chinese cabbage) heterosis utilization is both at home and abroad at present: (1) self incompatible line: Japan begins the research of Brassicas crop heterosis utilization the thirties, begin to use crop half-bloods such as self incompatible line preparation broccoli cauliflower the beginning of the fifties, brassica vegetable crop (the comprising Chinese cabbage) crossbreed of breeding in recent years all is that self incompatible line is formulated.The Qingdao City institute of agricultural sciences at first utilized the self incompatible line preparation Chinese cabbage first generation of hybrid and was applied to produce, and becomes the main path of vegetable crop heterosis utilizations such as Chinese cabbage, broccoli to the beginning of the seventies the domestic end of the sixties.But the weak point of this approach is: 1. self-reproduction difficulty, need artificial bud pollination, or adopt other chemical method to handle could be solid, and reproduction coefficient is low, the cost height; 2. along with the increasing of selfing algebraically, parent's economic characters, resistance falls sharply; 3. the first generation of hybrid hybrid rate of its preparation is difficult for reaching 100%, and seed purity can not get guaranteeing.(2) male sterile two-purpose line: this is the Chinese cabbage heterosis utilization method of China's original creation, in national vegetables scientific research cooperation meeting in 1974, the Chinese Academy of Agricultural Sciences, Agricultural University Of Shenyang, the Shenyang City institute of agricultural sciences, Zhengzhou City vegetables delivered " research of Chinese cabbage male sterile two-purpose line and the research report of utilizing " simultaneously, after this male sterile two-purpose line also becomes one of main path of China's Chinese cabbage heterosis utilization gradually, the shortcoming of male sterile two-purpose line is to have only 50% sterile plant rate, need encrypt the maternal row of field planting during the production of hybrid seeds, to in time pull out maternal row 50% before blooming and to educate strain, thereby influence the output and the quality of hybrid seed, bad large scale application.(3) nuclear gene is made male sterile line mutually: the nineteen ninety Shenyang City institute of agricultural sciences seed selection success Chinese cabbage cell nucleus gene make male sterile line mutually, but this method parent propagation need be established ground, two-stage garden, still will pull out 50% on ground, one-level garden and can educate strain, formality is numerous and diverse, and cost is higher.

The cytoplasmic male sterility of brassica vegetable is the aspect that Chinese scholars is paid attention to the most, has done a lot of work since the end of the sixties, has developed many sterile sources.Peason(1972) identified male sterile plant from the filial generation of B.nigra and B.oleracea varitalica, the male sterile line nectary of breeding is thus degenerated, and gynoecium is sterile.Thompson(1972) and Shiga and Baba(1976) at the F of B.napus ₂In obtain sterile colloid, respectively called after TCMS and Scms, the two all exists serious temperature and the susceptibility of developmental stage.Engle(1974) in ball callage (B.oleracea), found sterile cytoplasm, but the recovery of the pregnant property of stamen is normal under high temperature and long-day; Dgura(1968) sterile cytoplasm that obtains in R.Sativus was once paid attention to by Chinese scholars, extensively transformation of quilt in Brassicas, but fail to solve problems such as yellow, gynoecium distortion all the time.Heilungkiang gardening once identified the distant hybridization of " the red sieve fore-telling * Chinese cabbage of Wang Zhao ", the sterile material of breeding through backcrossing of 134 Chinese cabbage cytoplasms exists nectary to degenerate equally, the blade yellow, problem such as advantage is not strong can not be used." sichuan agriculture science " (fifth phase in 1988) reported " early the emperor is white " male sterile line that the Chengdu institute of agricultural sciences breeds, crossbreed " 60 days are early ", and fertility is still understable, and hybrid purity is not high.

The objective of the invention is the seed selection sterile plant rate is 100%, and sterile degree is at the Chinese cabbage cytoplasm male sterility line more than 95%, and the crossbreed that makes with the obvious advantage, quality better, neat and consistent, high-output stress-resistance is used for producing.

A kind of male-sterile line breeding method for allo-plasm of Chinese cabbage is characterized in that seed selection, breeding, the production of hybrid seeds are as follows:

(1) being female parent with sterile source Brassica napus Pori horse, is paternal hybrid with Chinese cabbage inbred lines 3411-7, obtains species hybrid F 1 ₁;

(2) with F 1 ₁Be female parent, do paternal hybrid, obtain triple hybrid F with broccoli ₁;

(3) use triple hybrid F ₁Being female parent, is male parent continuous backcross 3-5 time with Chinese cabbage inbred lines 3411-7, obtains stable sterile line CMS _3411-7;

(4) use male sterile line CMS _3411-7Be female parent, Chinese cabbage inbred lines 3411-7 is that male parent is hybridized breeding male sterile lines;

(5) use male sterile line CMS _3411-7Being female parent, is that male parent is hybridized with 89S9 or 89S128 parent, preparing hybrid kind assorted 13 or assorted 14.

Allo-plasm of Chinese cabbage male-sterile line breeding pattern is seen Fig. 1.

Main contents of the present invention:

(1) CMS _3411-7Feature:

A, sterile plant rate stably reach 100%, sterile degree 95-100%, and it is light to lose flower bud, and robust growth sees Table 1.

B, pistil function are normal, and nectary development is sound, and every pod seed 15-20 grain is up to 35, natural crossing rate 100%.

C, economic characters are fully identical with maintenance line B, 90-95 days breeding time, strain width of cloth 75cm, plant height 47cm, 9 of siphonal lobes, ball leaf 35-40 sheet, plant is the first transaction of a day's business, the leaf look green, help green in vain, the little wrinkle of blade.Oval type is fallen in the ball stacked package, high stake, spherical index 1.4, the heavy 3.5-4kg of single ball, the large and small strain of reproductive stage is all more healthy and more vigorous, divide principal stresses strong, general one-level branch 6-11, pattern is yellowish, corolla less (comparing with B system), it is long slightly than B system to plant pod, floral organ does not have the deformity performance, and seedling growth is normal, no yellow.

D, disease resistance: identify that through artificial infection downy mildew resistance, virus resistance disease and black spot see Table 2.Field resistance investigation result over the years identifies that with artificial infection trend is consistent, and the better resistance of generally holding concurrently is used kind of 80-7 and Lubai 8th all strong (table 3) than producing.

E, coordinate force are good, CMS _3411-7Coordinate force performance over the years sees Table 4.

F, CMS _3411-7Hereditary capacity: extensive guarantor concerns the half-blood (F once the preparation of 22 parts of male sterile lines ₁) fertility observe, find 8 of the strong combinations of recovery capability, 12 of the strong combinations of hold facility, 4 combinations keep and recovery capability quite (table 5).

(2) assorted 13, assorted 14 feature and culture technique main points of crossbreed

Assorted 13: middle seasonal strain, 75-80 days breeding time, the leaf look green, white group, plant height 41.5cm, strain width of cloth 62cm, spherical index 1.0, stump, stacked package, oval, bag ball consolidation, single ball net weight 3.5kg, clean vegetables rate 75%, good palatability, best in quality, to virus disease and downy mildew tool multiple resistance, yield level 6000-8000kg/ mu, heavy famine year is also more than 3000kg/ mu, than producing main breed Lubai 8th volume increase 13.5%.The sowing about August 15 of Guanzhong area, field planting distance between rows and hills 50 * 45cm, mu is planted about 3000 strains, and other culture technique is with common Chinese cabbage.

Assorted 14: late variety, 90-95 days breeding time, the leaf look light green, white group, plant height 46cm, strain width of cloth 77.5cm, leaf-head Long Circle, high stake, folded armful, spherical index 1.6, single ball net weight 6.3kg, the clean vegetables rate is more than 75%, quality better, viral diseases, downy mildew, the anti-black spot of holding concurrently and soft rot.Yield level 7000-8300kg/ mu, heavy famine year is also more than 4000kg, than producing unified contrast 80-7 volume increase 29.7%, the Guanzhong area is sowed 12-15 day in August, field planting distance between rows and hills 55-60 * 50cm, mu is planted about 2800 strains, and other culture technique is with common Chinese cabbage.

Fig. 1 is described in detail the present invention below in conjunction with breeding pattern:

1, CMS _3411-7Seed selection

(1) be female parent with Brassica napus Pori horse (B.napus) that introduces from Central China agricultural university, 3411-7 does paternal hybrid with Chinese cabbage inbred lines, obtains species hybrid F ^a ₁Economic characters were observed and were selected autumn, and choosing has the plant of paternal character and reserves seed for planting.

(2) with above-mentioned F ^a ₁Be female parent, invest the pollen of Chinese cabbage, broccoli respectively, obtain F ₁BC ₁Generation and triple hybrid F ₁

(3) the fine individual plant F to choose ₁Triple hybrid is maternal, and 3411-7 backcrosses with Chinese cabbage inbred lines, obtains F ₁BC ₁

(4) continued in continuous 3 years to carry out backcross transformation, simultaneously 3411-7 is begun the selfing purifying, select fine individual plant, obtain F at last as the samsara male parent with 3411-7 ₁BC ₄Generation, CMS _{3411-7-5-3-1-1}Etc. system's sterility begin stable and balling good, finished the transformation of economic characters.

(5) male sterile line and maintenance line are carried out the artificial infection resistance evaluation of TuMV and downy mildew (pp), screening, and early stage hybrid combination power survey is joined.

(6) on selected same male sterile line individual plant,, reserve seed for planting respectively, so far male sterile line CMS with the different fine individual plant pollinations of same maintenance line _{3411-7-5-3-1-1-4-2-5}(be called for short CMS _3411-7) and corresponding maintenance line CMS _{3411-7-5-3-1-1-4-2-5}The seed selection success.

2, male sterile line CMS _3411-7The breeding stock technology

The present invention uses male sterile line CMS _3411-7Be female parent, Chinese cabbage inbred lines 3411-7 is a male parent, carries out the outbreeding male sterile line, and is specific as follows:

(1) harvesting method: become strain or partly become strain to collect seed.

(2) sowing time and sowing condition: collect seed to becoming strain, when extraneous mean of dekan temperature be stable at 23-25 ℃ (Guanzhong area 10-15 day in August) live; Half-and-half become strain to collect seed, then than becoming strain seed collecting method late sowing 15-20 days.

(3) planting strain cultivates: the bag heart initial stage, the balling-up phase, strict selection had inbred line 3411-7 characteristic feature characteristic in the field, robust growth, no damage by disease and insect, balling is good, and the plant (Guanzhong area November 25) before early frost arrives that siphonal lobe is few is grubbed out, and heels in cold bed and preserves, storage period strengthens management, and prevents to be heated to endure cold.Cut head before the field planting, the beginning of spring by the end of February at the beginning of 3 months field planting land.

(4) field planting condition: can be in 30 purpose gauze canopies after the soil thaws or field planting in the natural isolated area.

(5) field planting method: adopt the seat water slurry to plant or plant afterwards earlier and water, distance between rows and hills 80 * 60cm, CMS _3411-7With the capable ratio of inbred line 3411-7 be 3: 1-4: 1, the maternal plant field planting is avoided and is watered big flood.

(6) artificial pollination and manually put honeybee: behind the plant blossom, manually adopt foamed plastics or honeybee rod to pick pollen and award CMS from maintenance line _3411-7Also but artificial organ is put honeybee.

(7) results: the seed of gathering in the crops from sterile strain promptly is male sterile line CMS _3411-7, breeding mode is seen Fig. 2.

3, CMS _3411-7Cross-breeding technology

The present invention adopts male sterile line CMS _3411-7Being female parent, is that male parent is hybridized with 89S9 or 89S128 parent, preparing hybrid kind assorted 13 or assorted 14.First generation of hybrid production of hybrid seeds pattern is seen Fig. 3 and Fig. 4.

Advantage of the present invention and good effect are as follows:

(1) sterile line C_3411-7Sterility stable, sterile plant rate reaches 100%, sterile degree is more than 95%, the gynoecium nectary is normal, does not have yellow seedling stage.

(1) hybrid seed yield height: CMS_3411-7Gynoecium is fully normal, and natural Fruiting Ability is strong, and about the average 75kg of the first generation of hybrid production of hybrid seeds, the high yield field can reach 90kg.

(2) saving of labor, cost are low: CMS_3411-7Breeding needn't resemble self incompatible line easily Such artificial flower bud phase or chemical treatment; Needn't resemble to increase a breeding garden the nucleus gene interactive effect male sterile line in addition, pulls out 50% fertile plant. Use CMS_3411-7The preparing hybrid kind also needn't resemble encrypts the maternal row of field planting the Chinese cabbage male sterile two-purpose line and pull out 50% fertile plant before blooming, thereby simple procedure, can greatly reduce seed costs.

(3) purity of hybrid is good, the hybrid rate height, and amount of increase in production is big.

Table 1.CMS_3411-7Sterility performance over the years

Table 2.CMS_3411-7The people inoculates disease-resistant performance

Table 4.CMS_3411-7Coordinate force performance over the years

Table 3.CMS_3411-7Field resistance investigation over the years (1987-1991)

The stamen fertility table of the assorted generation of table 5. Chinese cabbage male sterility

* s: sterile; Ps: half is sterile; F: can educate.

Claims (1)

1, a kind of male-sterile line breeding method for allo-plasm of Chinese cabbage is characterized in that seed selection, breeding, the production of hybrid seeds are as follows:

(1) being female parent with sterile source Brassica napus Pori horse, is paternal hybrid with Chinese cabbage inbred lines 3411-7, obtains species hybrid F ₁ ¹

(2) with F ₁ ¹Be female parent, do paternal hybrid, obtain triple hybrid F with broccoli ₁

(3) use triple hybrid F ₁Being female parent, is male parent continuous backcross 3-5 time with Chinese cabbage inbred lines 3411-7, obtains stable sterile line CMS _3411-7

(4) use male sterile line CMS _3411-7Be female parent, Chinese cabbage inbred lines 3411-7 is that male parent is hybridized breeding male sterile lines;

(5) use male sterile line CMS _3411-7Being female parent, is that male parent is hybridized with 89S9 or 89S128 parent, preparing hybrid kind assorted 13 or assorted 14.

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