Abstract
The study was under taken to make an acquisition of knowledge on the relationship of initial seed borne infection of Colletotrichum corchori and jute seed yield parameters under Greenhouse condition. Experiment was conducted at Plant Pathology Department and Greenhouse of Bangladesh Jute Research Institute (BJRI) during July 2011 to April 2012. All together 600 (six hundred) jute seed samples were collected from different sources and categorized as 0.0 %, 5%. 10%, 15%, 20% and 25% initial of pure seed borne infection with C. corchori for further study. Germination of the seed varied significantly and decreased with the increase initial seed borne infection of C. corchori. Germination failure/dead seed, infected seedlings and total dead seed varied significantly and increased with the increase of initial seed borne infection of C. corchori. There were negative relationships between, seed yield parameters of the harvested seeds of CVL-1 produced in Greenhouse with initial seed borne infection of C. corchori. The regression coefficients for germination, plants/pot, seeds/pod and seeds/plant were -1.048, -0.403, -0.756 and -34.24, respectively. On other hand, relationship of infected seedlings and total dead seeds in Greenhouse were positive with the initial seed borne infections of C. corchori and the regression coefficients for infected seedlings and total dead seed were 0.248 and 0.751, respectively. Since, anthracnose of jute caused by fungus Colletotrichum corchori is a seed borne disease and transmit from seed to plant to seed and consequently hamper the quality and yield of fibre and affect the seed quality and seed yield as well and thus necessary precautions should be taken before sowing and after germination of the seeds to produce higher yield and quality jute seed and fibre.
Highlights
Introduction28.06% and Bangladesh as a leader in the jute market in the world should pay proper attention to boost up the production (Ferdous, 2013)
Jute (Corchorus capsularis L. and Corchorus olitorius L.) is the main cash crop of Bangladesh
Relationship of initial seed borne infection of C. corchori with infected seedling and total dead seed Relationship of % infected seedlings and total dead seeds in green house were positively related with the initial seed borne infections of C. corchori and the regression coefficients were 0.248 and 0.751, respectively which indicate that the rate of increase of % infected seedlings increased by 0.248% and total dead seeds increased by 0.751 and for every 1% increase of initial seed borne infection of C. corchori (Graph 5 and 6)
Summary
28.06% and Bangladesh as a leader in the jute market in the world should pay proper attention to boost up the production (Ferdous, 2013). Jute suffers from 13 different diseases of which 10 are seed borne (Fakir, 2000). Except leaf mosaic of jute, all seed borne diseases are caused by fungi. Among the seed borne fungal diseases, anthracnose caused by Colletotrichum corchori (Ikata and Yoshida, 1940) is one of the most important disease of jute. The plant do not die but the disease badly affects the fibre quality. The market value of the fibre was found to be reduced by 30 to 50% than that of healthy plants as reported by Khan and Strange (1975). Keeping the view of above ideas the present study was under taken to observe the relationship of initial seed borne infection of Colletotrichum corchori with different jute seed yield parameters under Greenhouse condition
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