Plant Breeding Slides

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    1/216

    .

    T.E.I.

    ..

    . ,

    ,

    2007

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    .

    . &

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    .

    ,

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    ,,

    - ,

    - 8 9 ..

    ,

    , ,

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    :

    :: ( )

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    Gregor Mendel

    1854,

    Mendel

    20 , (Haldane )

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    ::

    (

    )

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    ()

    (Pathobreeding)

    (Ecobreeding)

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    ::

    (Germplasm)

    (variety)

    (land race)

    (Population)

    (Openpollinated population)

    (inbred line)

    (Isogenic lines)

    F1 (F1 hybrid)

    (Synthetic variety)

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    (Germplasm):

    ( ) (variety): .

    (land race):

    (Population):

    (Open pollinated

    population):

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    (inbred line):

    .

    (Isogenic lines):

    F1 (F1 hybrid):

    (Synthetic variety):

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    .

    (1/7):(1/7): :

    : .

    ()

    : ()

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    .

    (2/7):(2/7):

    :

    :

    : ()

    :

    ()

    ,

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    .

    (3/7):(3/7):

    : ( ) . ,

    :

    :

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    .

    (4/7):(4/7):

    : ( ) . ()

    :

    :

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    .

    (5/7):(5/7):

    :

    : ( )

    :

    ( ) () (

    )

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    .

    (6/7):(6/7):

    : , .

    :

    .

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    .

    (7/7):(7/7): :

    :

    :

    :

    :

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    .

    2

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    .

    :

    ( ) ( )

    ()

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    .

    :

    ()

    ( )

    ()

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    .

    , ,

    :

    ( )

    ( )

    ( )

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    .

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    .

    2

    n

    2

    2

    2

    2

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    .

    1. :

    2.

    3.

    4.

    5.

    6.

    7.

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    .

    (())

    (())

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    .

    ::

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    .

    ( )

    ( )

    :

    ( )

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    .

    .

    4

    . .

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    .

    LiliumLilium sp.sp.

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    .

    LiliumLilium sp.sp.

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    .

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    .

    LiliumLilium

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    .

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    .

    ( )

    (ovules)

    4 ( 3) 3 8 (, 2 , 3 2 )

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    .

    >

    >

    LiliumLilium

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    .

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    .

    2

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    .

    (

    ):

    () ()

    : (1-24 h)

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    .

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    .

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    .

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    .

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    .

    3

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    .

    ::

    ( )

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    .

    ( / )

    :

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    .

    , , ,

    ( , , )

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    .

    (, , /, , )

    (

    )

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    .

    ( )

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    .

    ( ) .

    F2

    ()

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    .

    () () BiBi X bibi

    F1 Bibi ()

    Bi, bi

    F2 1 BiBi : 2 Bibi : 1 bibi

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    .

    F2

    BiBi DmDm X bibi dmdm

    BiBi DmDm Bibi DmDm bibi DmDm

    BiBi Dmdm Bibi Dmdm bibi Dmdm

    BiBi dmdm Bibi dmdm bibi dmdm

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    .

    F2 ()

    (crossing over):

    (cMorgan)

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    .

    :

    ,

    : .

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    .

    ()

    ,

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    .

    () ()

    :

    , , ,

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    .

    ( ) F1

    Fragaria

    F. Virginiana X F. chiloensis

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    .

    DNA

    ,

    ,

    :

    , , :

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    .

    (N. Vavilov)

    . ( VAVILOV)

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    .

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    .

    4

    --

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    .

    ( )

    1876 ().

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    .

    1.

    2. ( )

    3. (

    , , )4.

    ( )

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    .

    0

    20

    40

    60

    80

    100

    0 5 10 15 20 25 30 35

    , 1-6

    1-71-8

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    .

    0

    20

    40

    60

    80

    100

    0 2 4 6 8 10

    ,

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    .

    : -

    -

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    .

    ,

    :

    ()

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    .

    ((,, ,, )) ,,

    ((MatherMather and Jinks, 1971and Jinks, 1971))

    :: __ __ __

    __ _ __ _ == FF11 [(P[(P11 + P+ P22) / 2 ]) / 2 ] FF11, P, P11, P, P22

    .. ((

    ))

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    FF11, .

    (Beal 1890)

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    .

    ( )

    ( , , / :

    )

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    .

    ((dominance theory)dominance theory)

    FF11

    :

    :

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    .

    bbCCddEE x aaBBccDDee

    F1 AaBbCcDdEe WW = Ww = 2 ww = 0

    P1 = 6, P2 = 4 F1 = 10

    A b C d E

    X X X X F1

    a B c D e

    ( )

    ((overdominanceoverdominance theory)theory)

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    .

    ((overdominanceoverdominance theory)theory)

    (a1, a2, ...)

    . (a1a2)

    .

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    .

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    .

    4

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    .

    :

    (

    : )

    :

    )

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    .

    ,

    . :

    1.

    2. 3.

    4.

    (())

    1. ( ).

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    .

    2. (. )

    . (, , , ). (, , )

    .

    3. . (, : )

    . (: .). (, : )

    . (, )

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    .

    (, , ,

    : , : )

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    .

    5

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    .

    ( , , ,

    )

    ()

    (

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    .

    , F2

    )

    (kg ,cm ) ( ,

    , , )

    FF22 1, 2, 31, 2, 3

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    .

    1 2 3 4 5

    1 2 3

    1 2 3 4 5 6 7

    . . .

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    .

    ,

    ,

    ( - )

    ( , ,,, )

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    .

    ( )

    East 1900

    KANONIKH KATANOMH

    1

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    .

    1.

    2.

    3. F1

    ( )

    4. F2

    F1

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    .

    F1 .

    5. F2 F3 ,

    F2

    6. (F3, F4, ) , .

    P1 P2

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    .

    F3 F3

    F2

    F1

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    .

    ( )

    : , F2

    ( ).

    P1 P2

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    .

    F3 F3

    F2

    F1

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    .

    (

    ) (

    )

    V = d2/(n 1)

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    .

    V = d2/(n-1)

    VP = VG + VE

    : = VG / VP = VG / (VG + VE)

    : h2 = VA + VP

    0

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    .

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    .

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    .

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    .

    6

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    .

    1.

    2.

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    .

    1.

    ( , )

    i

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    .

    i.

    ii. ,

    iii.

    iv. (

    )

    v.

    1.

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    .

    2.

    3.

    4. -

    (, ), /(), F1,

    5.

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    .

    6

    :

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    .

    :

    Johannsen (1903):

    ( )

    :

    Pure line selection

    JohannsenJohannsen

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    .

    ( )

    . . . . .

    . . . . .

    1

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    .

    . . . . .

    . . . . .

    2

    . (1-2 )

    3

    (2 x

    2 )

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    .

    ,

    (Backcross):

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    .

    (.

    )

    :

    :

    - % RR x rr

    1 - F1 Rr x rr 50,00

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    .

    F1 Rr x rr 50,00

    2 - BC1 Rr : rr x rr 75,00

    3 - BC2 Rr : rr x rr 87,50

    4 - BC3 Rr : rr x rr 93,75

    BC4

    Rr : rr 96,87

    Rr RR

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    .

    ,

    1.

    2

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    .

    2.

    3. ( )

    4.

    (

    )

    1. ( )

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    .

    )

    2. ( :

    )3.

    .

    (Pedigree selection)(Pedigree selection)

    Mendel:

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    .

    :

    . ( )

    .

    )) .

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    .

    (

    )

    .

    ))

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    .

    F1 F1

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    ( )

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    .

    )

    F2 F

    3

    ( F2

    )

    P1 P2

    F1

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    .

    F3 F3

    F2

    F1

    x F1 I I I I I . . . . . . . . F1

    F2 F2 . . . . .

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    .

    2

    F3

    F4

    ( ) F5 F6 F7 F

    8

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    .

    7

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    .

    :

    1.

    ( )

    2.

    . ,

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    .

    ,

    ,

    (/

    )

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    .

    :

    (

    )

    (

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    .

    )

    .

    (

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    .

    )

    (

    50 %

    ( )

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    .

    (griding).

    (Ear to row selection, )1 50 100

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    .

    1. 50 100

    2.

    3.

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    .

    : F1

    (, ,

    )

    1. (

    )

    2.

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    .

    3. ( )

    : F1

    :

    ( ,

    )

    1.

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    .

    2.

    ()

    3.

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    .

    ( )

    (F2 .)

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    .

    . 50 %

    x=[(2-1)/2]

    x

    F1 100,0 % 0,0 %

    F2 1 : 2 : 1 50,0 % 50,0 %

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    .

    F3 2 / 1 : 2 : 1 / 2 25,0 % 75,0 %

    F4 12,5 % 87,5 %

    F5 6,3 % 93,7 %

    F6 3,1 % 96,9 %

    F7 1,6 % 98,4 %

    2 (F ) 5 (F ) 8 (F )

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    .

    2 (F3) 5 (F6) 8 (F9)

    11 75,0 96,9 99,6

    55 23,7 85,3 98,1

    1010 5,6 72,9 96,2

    2020 0,3 53,0 92,5

    4040 0,001 28,1 85,5

    2 F1

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    .

    .

    :

    (-1)/2

    20 190 100 4950

    (top cross)(top cross)

    .

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    .

    : : (

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    (, 2)

    ( )

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    .

    (, )

    : (

    x):

    .

    n ( ) =

    2n ( 2) =

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    .

    x = ( .)

    (x = 11) _

    : 2n = 2x = 22 n = x = 11

    : 2n = 3x = 33 - () : 2n = 4x = 44 n = 2x = 22

    : 2n = 6x = 66 n = 3x = 33

    .

    ()

    (

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    .

    (, ,

    , )

    ( 50 % ). : , , , ,

    ,

    ;

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    :

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    .

    (x).

    (-, -,-, -)

    ( , )

    :

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    .

    (x).

    : 2 - 2, : 2 - 1,

    : 2 + 1, : 2 + 2

    x 2 N N

    - 11 33

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    .

    - 12 48 24

    - 7 42 21

    - 7 56 28

    - 13 52 26 - 12 48 24

    - 20 80 40

    - 9 36 18 - 7 56 28

    - 8 32 16

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    .

    () ().

    , ,

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    .

    (1. 2. - : 2)

    ( , , )

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    .

    , )

    (Colchicum autumnale)

    , , (, , )

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    .

    () : (2n = 4x = 48), (2n = 4x = 32) : (, )

    ( x )

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    .

    (

    )

    (2n = 3x =

    33)

    : -

    1. :

    , , , , (

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    .

    )2.

    (

    - )

    3. : , ( .)

    :

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    .

    .

    : 1 : 0

    1 : 0

    35 : 1 3 : 1 0 : 1

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    .

    ( , 3-4 6-8)

    ,

    .

    1.

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    .

    2.

    . -

    3.

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    .

    .

    . ()

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    .

    :, , , ,

    Brassica

    ().

    B. nigraN =8 (BB)

    B. juncea

    N =18 (AABB)B. carinata

    N =17 (BBCC)

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    .

    B. campestris

    N =10 (AA)

    B. oleraceaN =9 (CC)

    B. napus

    N =19 (AACC)

    Triticum monococcum X Triticum searsi2N = 14 (AA) 2N = 14 (BB)

    AB ()

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    .

    Triticum dicocoides X Triticum tauschii

    2N = 28 (AABB) 2N = 14 (DD)

    ABD ()

    Triticum aestivum

    2N = 42 (AABBDD)

    Raphanus X Brassica

    x = 9 (RR) x = 9 (BB)RB ()

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    .

    Raphanobrassica

    2N = 4x = 36 (RRBB)

    Triticale = Triticum aestivum X Secale cereale

    (),

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    .

    (

    )

    1.

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    .

    2. ( )

    3. (Triticale

    Brassica)

    ().

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    .

    ( )

    100 %

    1.

    2. 3.

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    .

    1. ( )

    2.

    1.

    2.

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    .

    9

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    .

    ( )

    (land races):

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    .

    :

    1.

    2.

    3. -

    4.

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    (resistance):

    .

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    .

    (susceptibility):

    ,

    (disease avoidance escape):

    ( ) (immunity):

    (

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    .

    ) (tolerance):

    ( )

    (hypersensitivity):

    . :

    ,

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