सब्जी बीज उत्पादन के क्षेत्रि‍य मानक

To maintain the requisite genetic purity of variety, it is essential to have field standards in seed production. Since,  seed production programme is organized by public, as well private sectors organization at different locations, seasons and of various class, thus the field standards for seed production has to be formulated and maintained uniformly during the execution of the seed programme in field. The field standards of vegetables seed crop are of two types, the first one is general requirements which include the isolation distance for foundation and certified seed and second is the specific requirements comprising off-type, objectionable weeds and plants affected by seed borne diseases.

The objectives of general and specific requirements are to maintained genetic purity avoiding the genetic contamination and ultimately to meet the seed standards.

General requirements of vegetable seed production:

The isolation requirement is variable among the crops and it is low in self pollinated crops while moderate in often cross pollinated crops and higher in cross pollinated crops where wind/ insects act as pollinating agent. The crop-wise isolation is given below.
 
Crop Contaminant Minimum distance (m)
Foundation Certified
Tomato Field of the other varieties 50 25
Fields of the same variety not confirming to varietal purity requirements for certification 50 25
Brinjal Field of the other varieties 200 100
Fields of the same variety not confirming to varietal purity requirements for certification 200 100
Capsicum & Chillies Field of the other varieties 400 200
Fields of the same variety not confirming to varietal purity requirements for certification 400 200
Field of capsicum from chilli and vice versa 400 200
Okra Field of the other varieties 400 200
Fields of the same variety not confirming to varietal purity requirements for certification and wild okra 400 200
Ashgourd Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification 1000 500
Bittergourd Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and from balsam apple (Momordica balsamina) , bhat kerala and jangli kerala 1000 500
Bottlegourd Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification. 1000 500
Cucumber Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and from cucumis hardwickii 1000 500
Indian Squash(Tinda) Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification. 1000 500
Longmelon Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and snapmelon,muskmelon, oriental pickling melon and other non-desserted forms of cucumis melo 1000 500
Muskmelon Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and snapmelon, longmelon, oriental pickling melon and other non-desserted forms of cucumis melo known to cross 1000 500
Pumpkin Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and from winter squash, summer squash and cushaw(C. mixta) 1000 500
Ridgegourd Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and from spongegourd (L.cylindrica) 1000 500
Snakegourd Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and from Trichosanthes labata ,T.palmate and T. cucumerina 1000 500
Spogegourd Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and from ridgegourd (L.acutangula) 1000 500
Summersquash Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and from pumpkin (C. moschata), C. mixta and C. maxima 1000 500
Watermelon Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification and wild watermelon (Citrullus colocynthis L.) 1000 500
Amaranth Field of the other varieties 400 200
Fields of the same variety not confirming to varietal purity requirements for certification and wild amaranths 400 200
Celery Field of the other varieties 500 300
Fields of the same variety not confirming to varietal purity requirements for certification and from turnip rooted celery Apium graveolens 500 300
Methi Field of the other varieties 10 5
Fields of the same variety not confirming to varietal purity requirements for certification 10 5
Lettuce Field of the other varieties 50 25
Fields of the same variety not confirming to varietal purity requirements for certification and wild lettuce (Lactuca scariola) 50 25
Parsley Field of the other varieties 500 300
Fields of the same variety not confirming to varietal purity requirements for certification 500 300
Spinich & Spinich Beat Field of the other varieties 1600 1000
Field of the swiss chard,sugar beet and garden beet for spinach beet only 1600 1000
Fields of the same variety not confirming to varietal purity requirements for certification 1600 1000
Cabbage Field of the other varieties 1600 1000
Fields of the same variety not confirming to varietal purity requirements for certification and from the varieties of Brassica oleracea(L) var.oleracea, ramose, gemmifera, acephala, gongylodes, subaduda, italica and botrytis etc. 1600 1000
Cauliflower & Broccoli Field of the other varieties 1600 1000
Fields of the same variety not confirming to varietal purity requirements for certification and from the varieties of Brassica oleracea(L) var.oleracea, ramose, gemmifera, acephala, gongylodes, subaduda, italica and botrytis etc. 1600 1000
Knol-Knol Field of the other varieties 1600 1000
Fields of the same variety not confirming to varietal purity requirements for certification and from the varieties of Brassica oleracea(L) var.oleracea ,ramose,gemmifera,acephala, gongylodes,subaduda,italica,capitata and botrytis etc. 1600 1000
Garlic Field of the other varieties 5 5
Fields of the same variety not confirming to varietal purity requirements for certification 5 5
Onion Field of the other varieties 1000 500
Fields of the same variety not confirming to varietal purity requirements for certification 1000 500
Carrot Field of the other varieties 1000 800
Fields of the same variety not confirming to varietal purity requirements for certification 1000 800
Garden beat Field of the other varieties 1600 1000
Fields of the same variety not confirming to varietal purity requirements for certification and fields of the swiss chard and spinach 1600 1000
Radish Field of the other varieties 1600 1000
Fields of the same variety not confirming to varietal purity requirements for certification and from rat-tail radish 1600 1000
Turnip Field of the other varieties 1600 1000
Fields of the same variety not confirming to varietal purity requirements for certification and from other species of genus Brassica pekenensis, B.chinensis B.napus and various kind of sarson/rai 1600 1000
Peas Field of the other varieties 10 5
Fields of the same variety not confirming to varietal purity requirements for certification 10 5
Dolichos bean Field of the other varieties 10 5
Fields of the same variety not confirming to varietal purity requirements for certification 10 5
Cowpea Field of the other varieties 10 5
Fields of the same variety not confirming to varietal purity requirements for certification 10 5
French bean Field of the other varieties 10 5
Fields of the same variety not confirming to varietal purity requirements for certification 10 5

Specific field standards of vegetable seed production:

The maximum permitted (%) of off type, plant affected by seed borne diseases and objectionable weed plants are given below.

Crop

Factor

Maximum permitted(%)

Remarks

Foundation Seed

Certified Seed

Tomato

Off type

0.10

0.20

Max.at final in spection

Plant affected by seed borne diseases

-

0.10

0.50

Early blight, leaf blight,TMV

Brinjal

Off type

0.10

0.20

At and after flowering and for seed borne disease at final inspection

Plant affected by seed borne diseases

-

0.10

0.20

Phomopsis vexans

Capsicum and chilli

Off type

0.10

0.20

At and after flowering and for seed borne disease at final inspection

Plant affected by seed borne diseases

-

0.10

0.50

Leaf blight and anthracnose

Okra

Off type

0.10

0.20

At and after flowering

Objectionable weed plants

-

none

none

Wild okra

Ashgourd

Off type

0.10

0.20

At and after flowering

Bittergourd

Off type

0.10

0.20

At and after flowering

Objectionable weed plants

-

None

None

Balsamapple,Bhatkarela and Janglikerala

Bottlegurd

Off type

0.10

0.20

At and after flowering

Cucumber

Off type

0.10

0.20

At and after flowering

Objectionable weed plants

-

Cucumis hardwickii

Tinda

Off type

0.10

0.20

At and after flowering

Long melon

Off type

0.10

0.20

At and after flowering

Objectionable weed plants

-

None

None

Snapmelon, weedmelon and non-dessertform

Muskmelon

Off type

0.10

0.20

At any inspection conducted At and after lowering and for seed borne disease at final inspection

Objectionable weed plants

-

None

None

Snapmelon, weed melon, long melon and non-dessert form

Plants affected by seed borne disease

-

0.10

0.20

Cucumber Masaic Virus

Pumpkin

Off type

0.10

0.20

At and after flowering

Ridge gourd

Off type

0.10

0.20

At and after flowering

Spongegourd

Off type

0.10

0.20

At and after flowering

Summer squash

Off type

0.10

0.20

At and after flowering and for seed borne disease at final inspection

Watermelon

Off type

0.10

0.20

At and after flowering

Objectionable weed plants

-

None

None

Wild watermelon

Amaranth

Off type

0.10

0.20

At and after flowering

Objectionable weed plants

-

0.010

0.020

Wild amaranth

Celery

Off type

0.10

0.20

At and any flowering in the case of Off type and at the final inspection in case of seed borne disease

Plants affected by seed borne disease

-

0.10

0.50

Leaf blight and root rot

Methi

Off type

0.10

0.20

At and after flowering

Objectionable weed plants

-

0.010

0.020

senji

Lettuce

Off type

0.10

0.20

At and after flowering

Objectionable weed plants

-

0.010

0.020

Wildlettuce

Plants affected by seed borne disease

-

0.10

0.50

LettuceMosaicVirus

Parsely

Off type

0.10

0.20

At and any flowering in the case of Off type and at the final inspection in case of seed borne disease

Plants affected by seed borne disease

-

0.10

0.20

Leafspot

Spinach

Off type

0.10

0.20

At and after flowering

Cabbage

Off type

0.10

0.20

At and any flowering in the case of Off type and at the final inspection in case of seed borne disease

Plants affected by seed borne disease

-

0.10

0.50

Blackleg, black rot and soft rot

Cauliflower/ Broccoli/ Knol-Kohll

Off type

0.10

0.20

At and any flowering in the case of off type and at the final inspection in case of seed borne disease

 


Authors:

Dr.B.S.Tomar

Sr. Scientist

Seed Production Unit, IARI,New Dellhi

email: This email address is being protected from spambots. You need JavaScript enabled to view it.

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