INDIA

ITG/11

Date : 15-1-2004

National Guidelines
for the Conduct of Tests for
Distinctness, Uniformity and Stability
Sunflower
(Helianthus annuus  L.)
   

                Contents

I.    Subject

II.   Material required

III.  Conduct of tests

IV. Methods and observations

V.  Grouping of varieties

VI. Characteristics and symbols

VII. Table of characteristics

VIII. Explanation on the table of characteristics

IX.  Technical questionnaire


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I.  Subject 

These test guidelines apply to all varieties, hybrids and parental lines of  sunflower (Helianthus annuus .L.)

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II.  Material required

  1. The Plant Variety Protection (PVP)Authority decides when, where and in what quantity and quality of the seed and the plant material required for testing the variety is to be delivered. Applicants submitting material from a country other than India must make sure that all customs formalities are complied with. The minimum quantity of seed to be supplied by the applicant should be:

    Variety and hybrid  - 5000 grams   
         In only one submission
    Parental Line        - 2000 grams   


    The seed should meet the minimum requirements for germination capacity, moisture content and purity as prescribed for certified seed in India .  The germination should be as high as possible.  
       

  2. The plant material must not have undergone any treatment unless the PVP Authority allows or requests such treatment.  If, it has been treated full details of the treatment must be given.
      

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III.   Conduct of tests

  1. The minimum duration of tests should normally be two independent growing seasons with reference to the ecosystem of the variety submitted for DUS test.  
      

  2. The tests should normally be conducted at two test locations.  If any important characteristics of the variety can not be seen at  these places,  the variety may be tested at an additional place
      

  3. The field tests should be carried out under conditions ensuring normal growth.  The size of the plots should be such that plants or parts of plants may be removed for measurement and counting without prejudice to the observations which must be made up to the end of the growing period. Each test should include at least a total of 300 plants. Separate plots for observation and for measurement can only be used if they have been subject to similar environmental conditions.  

    Test plot design:  

    Number of rows : 8
    Row length :6 m
    Row to row distance 60 cm
    Plant to plant  distance 30 cm
    Number of replications : 2

     

  4. Observations should not be recorded on plants in border rows
       

  5. Additional tests for special purpose may be established  

  

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IV.  Methods and observations  

  1. The characteristics described in the Table of characteristics should be used for the testing of varieties and hybrids for DUS  
      

  2. All observations for the assessment of distinctness and stability should be made on at least 20 plants or parts of plants for inbreds/single cross hybrids and 50 plants for variety and multiple hybrids in 2 replications.  
       

  3. For the assessment of uniformity of characteristics on the plot as a whole (visual assessment by a single observation of a group of plants or parts of plants), the number of aberrant plants or parts of plants should not exceed 3% in case of hybrids/parental lines and 5% in the varieties.  
      

  4. For the assessment of colour characteristics, it is recommended that Royal Horticultural Society (RHS) colour chart should be used.
      

  5. Unless otherwise indicated, all observations on the leaf should be made on fully developed leaves after bud stage but before flowering. The bud stage is reached when the diameter of the main bud is about 1 cm for branched types or 3 to 7 cm for not branched types.  
      

  6. All observations on the seed should be made at maturity of plants and not on seed sent in by the applicant.  
      

  7. When resistance characteristics are used for assessing distinctness, homogeneity and stability, records must be taken from tests made under conditions of controlled infection.
      

  8. A difference in the formula of a sunflower hybrid is not enough by itself and the protection of a hybrid variety of sunflower requires that it be sufficiently different in its characteristics when compared with other varieties. If an application is filed for protection of a hybrid variety of sunflower which is based on a formula already existing, the applicant should be informed of the fact and given the possibility of withdrawing his application. If he does not withdraw his application, the authority should test the variety.     

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V.  Grouping of varieties  

  1. The collection of varieties to be grown should be divided into groups to facilitate the assessment of distinctness.  Characteristics which are suitable for grouping purposes are those which do not vary, or to vary only slightly, within a variety.  Their various states of expression should be fairly evenly distributed throughout the collection.  
      

  2. It is recommended that the testing organisation/ centre use  the following characteristics  for grouping varieties :  

i.                    Time of flowering (Characteristics 3)

ii.                  Leaf : fineness of serration (Characteristic 8)

iii.                Plant : natural height (Characteristic 30)

iv.                 Plant : branching (Characteristics 31)

v.                   Seed : stripes (Characteristics 38)

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VI.  Characteristics and symbols  

  1. To assess distinctness, uniformity and stability, the characteristics and their states as given in the Table of characteristics should be used.  
      

  2. In multiple hybrids characteristics sunflower segregate with the effect that several states of characters occur side by side in a variety.   
       

  3. Notes (1 to 9) should be given for each state of different characteristics for the purpose of electronic data processing.  
      

  4. Legend :

    (*)

    Characteristics should be used on all varieties in every growing season over which examinations are made and always be included in the variety descriptions, except when the state of expression of a preceding characteristic render this impossible.  
        

    (+)

    Characteristic is illustrated by explanation or drawing in chapter VIII (Explanations on the table of characteristics)

     

  5. The optimum stage of plant growth for assessment of each characteristic is indicated by a number in the sixth column
       

  6. Type of assessment of characteristics indicated in column 7 of Table of characteristics is as follows

 

        Type of assessment

MG

:

Measurement by a single observation  of a group of plants or parts of plants  
 

MS

:

Measurement of a number of individual plants or parts of plants  
 

VG

:

Visual assessment by a single observation  of a group of plants or parts of plants  
 

VS

:

Visual assessment by  observation of individual plant or parts of plants

  

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VII. Table of characteristics

Sl.No.

Characteristics

States

Note

Example  Varieties

Stage of observa-tion

Type of assess-ment

1.

Hypocotyl : anthocyanin coloration

absent
medium  
strong

1
5
9

 

Seedling emergence

VG

2.

Leaf : anthocyanin coloration on margin of young leaves

absent  
present

1
9

 

Before flowering

VG

3. (*) (+)

Plant : time of flowering

early(<55 days)  
medium (55-75 days)  
late (>75 days)

3

5

7

Morden

 

 

 

 

4. (*)

Leaf : size

very small  
small  
medium  

large  
very large

1
3
5

7
9

 
RHA 274  
234A, PKVSF27  
Surya

Flowering

VG

5. (+)

Leaf : shape

oblong  
lanceolate  
triangular  
cordate  

rounded  
ovate

1
2
3
4

5
6

 
RHA 274  
AK 1R  
7-1A, PKVSH27  

234A

Flowering

VG

6. (*)

Leaf : colour

light green  
medium green  

dark green  

3

5


7

234A, LSH3  
KBSH1,  
PKVSH2,  
NDSH15  
7-1A

flowering

VG

7. (*)

Leaf : blistering

absent  
medium  
strong

1
5
9

234A

 

Flowering

VG

8. (*) (+)

Leaf : fineness of serration

fine  
medium  
coarse

3
5
7

6D-1  
PKVSH-27  
CMS2A, CMS  234A

Flowering

VG

9. (+)

Leaf : angle of lateral veins

acute  
right angle or nearly right angle  
obtuse

1
2


3

 

Flowering

VG

10. (+)

Leaf : height of the tip of the blade compared to insertion of petiole (at 2/3 height of plants)

very low  
low  
medium  
high  
very high

1
3
5
7
9

 

flowering

VS

11. (+)

Leaf : angle between lower part of petiole and stem

small  
medium  
large  

1
5
9

 
HA 89  
HA 290

Flowering

VS

12.

Leaf : hairiness

absent
sparse  
dense

1
5
9

 

Flowering

VG

13.

Leaf : petiole  pigmentation

absent  
present

1  
9


PKVSH 27

flowering

VG

14. (+)

Stem : hairiness at the top

absent  
medium  
strong

1
5
9

 
HA 89  
HA 303

flowering

VG

15.

Stem : pigmentation

absent  
weak  
medium  
dense

1
3
5
7

 

flowering

VG

16.

Stem : number of leaves on main stem

low<21  
medium 21-25  
high>25  

3
5
7

HA 303

 

flowering

MS

17.

Ray flowers : number

very few (<16)  
few (16-30)  
medium(31-40)  
many (41-50)  
very many (>50)

1
3
5
7
9

 

flowering 

MS

18.

Ray flower : shape 

elongated  
ovoid  
rounded  

1
2
3

RHA 266

flowering

VG

19. (*)

Ray flower : colour

ivory  
pale yellow  
yellow  
orange  
purple  
red brown  
multi coloured

1
2
3
4
5
6
7

  

flowering

VG

20.

Disk flower : colour

yellow  
red  
purple

1
2
3

 

flowering

VG

21. (+)

Disk flower : anthocyanin colouration of stigma

absent
weak  
medium  
strong

1
3
5
7

 

flowering

VG

22.

Disk flower : pollen  colour

white  
yellow  

1
2

 

flowering

VG

23.

Head : number of bracts on the back

few
medium  
many

1
5
9

 

Seed setting

MS

24.

Bract : shape

elongated
rounded

1
2

 

Seed setting

VG

25.

Bract : anthocyanin colouration

absent  
present

1  
9

 

Seed setting

VG

26. (+)

 

Plant : natural position of closest lateral head to the central head (end of flowering) - Branched

above
below  

1  
2

 

Seed setting

VG

27. (+)

Head : attitude

horizontal
inclined  
vertical  

half turned down
turned down

1
3
5

7
9

 

Morden, MSFH 17  
NDSH 15  
MSFH 8

harvest  maturity

VG

28. (*)

Head : diameter

small (<15 cm)  
medium (15-20 cm)
large (>20 cm)  

3
5

7

RHA 274


Morden

harvest  maturity

MS

29. (*) (+)

Head : shape of grain side

concave
flat  
convex  

mis-shape

1
2
3

4


EC 68414  
Morden, KBSH 1, MSFH 17

Harvest maturity

VG

30. (*)

Plant : height

very short (<80 cm)
short (80-110 cm)
medium (111-140 cm)  
tall (141-170 cm)  

very tall (>170 cm)  

1

3

5

7

9



Morden  

BSH 1

KBSH 1, KBSH 44  
KBSH 42

Harvest maturity

MS

31. (*)

Plant : branching 

absent

present

1

9

Morden, KBSH 1
RHA 274

Harvest maturity

VG

32. (+)

Plant : type of branching

basal branching
top branching  
fully branching with central head  
fully branched without central head

1
2
3

4

 

RHA 271, RHA 274

Harvest maturity

VG

33. (*)

Seed : length

Short (<1 cm)
Medium (1-1.5 cm)  
Long (>1.5 cm)  

3
5

7


234 A, KBSH 1

After harvest

MS

34. (+)

Seed : shape

elongate
ovoid elongate  
ovoid wide  
rounded

1
2
3
4

 

RHA 274  
CO 4  
Morden

After harvest

VG

35.

Seed : weight (100 seeds)

low (<4 g)
medium (4-6 g)
high (>6 g)

3
5
7

RHA 274
KBSH 1
Surya

After harvest

MS

36. (*)

Seed : base colour

white
grey  
brown  
black  

1
2
3
4

 
6D 1  
MSFH 17  
Morden, KBSH 1, BSH 1, CO 2

After harvest

VG

37.

Seed : mottling

absent
present

1
9

 

After harvest

VG

38. (*) (+)

Seed : stripes

absent  
present

1
9

RHA 274  
Surya, MSFH 17

After harvest

VG

39.

Seed : colour of stripes

white  
grey  
violet grey  
brown

1
2
3
4

Surya

After harvest

VG

40.

Hull : percent (100 seeds)

low (<25%)  
medium (25-30%)  
high (>30%)

3
5

7

6D  1, TCSH 1  
KBSH 1

After harvest

MS

 

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VIII. Explanations on the table of characteristics

 

Characteristic 3. Time of flowering

The time of flowering is reached when 50% of the plants are in flower. A plant is considered in flower when it shows at least one ray flower erected and opened.

Characteristic 5. Leaf : shap

1
 oblong
2
lanceolate
3
triangular
4
cordate
5
rounded
6
ovate
  

 

Characteristic 8. Leaf : fineness of serration

  3
fine
5
medium
7
coarse
  

 

Characteristic 9. Leaf : angle of lateral veins

1
acute
2
right angle or nearly right angle
3
 obtuse
 

 

Characteristic 10. Leaf : height of the tip of the blade compared to insertion of petiole (at 2/3 height of plants)

1
very low
2
low
3
 medium
4
 high
5
very high
 

 

Characteristic 11. Leaf : angle between lower part of petiole and stem

 

Characteristic 14. Stem : hairiness at the top (hairiness should be recorded 5 cm below the head, just before flowering

  1
 absent
  2
medium
3
strong
 

 

Characteristic 21. Disk flower: anthocyanin colouration of stigma

 

Characteristic 26. Plant : natural position of the closest lateral head to the central head (at end of flowering) - Branched

    1
above
      2
below
    

 

Characteristic 27. Head : attitude

1
horizontal
2
inclined
3
 vertical
4
half turned down
5
turned down

 

Characteristic 29. Head : shape of grain side

1
concave
2
 flat
  3
 convex
  4
mis-shapen

 

Characteristic 32. Plant : type of branching (at maturity)

1
basal branching
2
top branching
  3
fully branched with central head
 
 
4
  fully branched without central head

 

Characteristic 34. Seed : shape

1
elongate
2
ovoid elongate
  3
ovoid wide
  4
 rounded

 

Characteristic 38. Seed : stripes

1
absent
2
present


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IX. Technical questionnaire

 

 

Reference Number
(not to be filled in by the applicant)

 

Technical questionnaire  
to be completed in connection with an application for plant breeders' rights  

 

1. Species:                                                           Helianthus annuus L.
                                                                                        Sunflower

 

 

2.      Applicant (Name and address) :  

 

 

 

3.  Proposed denomination or breeder's reference

  

 

  

4.  Information on origin, maintenance and reproduction of the variety

 

4.1 Type of material

(i)                 inbred line ( )
(ii)               single cross hybrid  ( )
(iii)             three-way cross hybrid ( )
(iv)              double cross hybrid ( )
(v)                open-pollinated variety ( )
(vi)              other (indicate formula) ( )

                                                

4.2    Formula (hybrid only)  
 

4.3  Genetic origin and breeding method (source, crossing, mutation etc.)  
 

4.4  Maintenance 


 

4.5 Use

i Oil and cake
ii Birds and direct human consumption
iii Ornamental
iv Other use (specify)

4.5 Other Information

 

 

 

5. Characteristics of the variety to be indicated (the number in brackets refers to the corresponding characteristic in Test Guidelines; please mark the state of expression which best corresponds).  

S.No. Characteristics States Example varieties  Notes

5.1
(3)

Time of flowering (quote mean date of flowering of variety as well as of two well-known comparable varieties)

Early
Medium
Late

Morden

3 [ ]
5 [ ]
7 [ ]

5.2
(8)

Leaf : fineness of serration

Fine
Medium
Coarse

6D 1
PKVSH 27
CMS 2A, CMS 234A

3 [ ]
5 [ ]
7 [ ]

5.3
(30)
Plant : height (quote height of variety as well as of two well-known comparable varieties)

Very short (<81 cm)
Short (81-110 cm)
Medium (111-140 cm)
Tall (141-170 cm)
Very tall (>170 cm)


Morden
BSH 1
KBSH 1,KBSH 44
KBSH 42

1 [ ]
3 [ ]
5 [ ]
7 [ ]
9 [ ]

5.4.
(3.1)

Plant: branching

Absent
Present

Morden, KBSH 1
RHA 274

1 [ ]
9 [ ]

5.5
(38)
Seed: stripes

Absent
Present

RHA 274
MSFH 17

1 [ ]
9 [ ]

6. Similar varieties and differences from these varieties  

Denomination of
Similar variety

Characteristic in
which the similar variety is different 0)

State of expression of similar Variety

State of expression of candidate variety
                          
0)  In the case of identical states of expressions of both varieties, please indicate the size of the difference.  

7. Additional information which may help to distinguish the variety

 

      7.1 Resistance to pests and diseases (specific biotype, if any)

                                                              

                                                               i.      Downy mildew

                                                             ii.      Rust

                                                            iii.      Alternaria blight

                              IV.  Other pests and diseases (specify)

      7.2 Special conditions for the examination of the variety, if any

 

      
       
7.3 Other information

 

8.  Authorization for release

 

(a)   Does the variety require prior authorization for release under legislation concerning the protection of the environment, human and animal health?

 

                     Yes              {     }                                                         No         {      }

 

(b)    Has such authorization been obtained?

 

                      Yes             {     }                                                         No        {      }     


If the answer to that question is ‘Yes’, please attach a copy of such an authorization   

 

 

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