1. SIGNIFICANCE OF SEED BORNE
DISEASES ON CROP PRODUCTION IN
BANGLADESH

2. OBJECTIVES
To know about the seed borne pathogen and seed
borne diseases of important economic crops.
To concern about the annual loss of crop production
by seed borne diseases.
To know about seed infection, their establishments
and seed borne plant infection.
To ensure about the seed health standard and field
health standard of notified seeds.
To know about the management or control of the seed
borne diseases.

3. SEED: Any plant part such as root ,stem,
leaf,bulb,rhizome etc.containing viable embryos
used as propagative unit or the fertilized
matured ovule constituting the genetic
potentiality capable of germination to produce
new plants for desired harvest is called seed.

4. SEED BORNE DISEASE
 Any malfunctioning of host or plants
those results from continuous
irritation by a pathogenic agent which
are carried by seed and transferred to
the plants and leads to development
of symptoms are called seed borne
diseases.

5. LIST OF SEED BORNE DISEASES
DISEASES PATHOGEN
Black point of wheat Bipolaris sorokiniana
Brown spot of rice Bipolaris oryzae
Alternaria blight of mustard Alternaria brassicae
Leaf spot of wheat Alternaria tritica
Purple stain of soybean Cercospora kikuchi
Red rot of Sugarcane Colletotrichum falcatum
Black band of Jute Botryodiplodia theobromae
Anthracnose of jute Colletotrichum corchori
Stem rot of jute Macrophomina phaseolina

6. Seed Borne diseases of Rice
Brown Spot of Rice Grain Spot of Rice

7. Seed Borne diseases of Wheat
Black Point of Wheat

8. Seed Borne diseases of Jute
Anthracnose Stem end rot

9. Seed Borne diseases of Sugarcane
Red rot of Sugarcane

10. Seed Borne diseases of Lentil
Foot & Root Rot of Lentil

11. Diseased pulse Seed

12. Seed Borne diseases of Soybean
Purple stain of Soybean

13. Seed Borne diseases of Chilli
Anthracnose of Chilli

14. Seed Borne diseases of Bean
Anthracnose of Bean

15. ROLE OF UNHEALTHY SEED
 Germination failure
 seedling diseases
 Adult plant infection
 Inoculation of virgin soil
 Introduction of new area
 Foci of primary infection
 Secure virulent physiologic races
 Seed discoloration
 Viability loss
 Lower market value

16. LOSSES DUE TO SEED BORNE DISEASE
RICE
Germination failure Pathogen % loss
Curvularia lunata 37%
Fusarium sp. 13%
Field loss
Curvularia sp. 59.5%
Storage
Bipolaris oryzae 20-63%

17. Wheat Pathogen Loss
% germination Bipolaris sorokiniana 3.40%
Fusarium sp. 17-19.7%
Onion
% germination Alternaria porri 51%
Jute
% germination Macrophomina phaseolina Combined
Botryodiplodia theobromae 39.4%
Colletotrichum corchori
Yield loss
Wheat Bipolaris sorokiniana 14.97%
Sesame Macrophomina phaseolina 5-10%
Country bean Colletotrichum lindemuthinum 5%

18. THANKS TO ALL