Effect of Seed Treatment on Seedling Health of Chili

Abstract

Effect of seed treatment on seedling health of chili (BARI Morich 1) was studied at Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh. BAU Bio-fungicide (3% of seed weight), chitosan (1% solution), thiovit (0.3% of seed weight), compressed moist heat (54ºC for 15 minutes), neem leaf extract (1:1 w/v), garlic clove extract (1:3 w/v), ginger extract (1:2 w/v) and allamonda leaf extract (1:1 w/v) were employed as seed treating agents. The treated seeds were placed on moistened blotter paper. Data were recorded on percent germination, production of percent healthy seedling and seedling vigour of chili. The results of seed health testing showed that, five different seed borne fungi viz. Colletotrichum capsici, Curvularia lunata, Rhizopus stolonifer, Aspergillus flavus and Fusarium moniliforme were found to be associated with the tested chili seed samples. Among these fungi, Curvularia lunata was the most prevalent one which was followed by Rhizopus stolonifer, Colletotrichum capsici, Fusarium moniliforme and Aspergillus flavus. All the seed treating agents were found to be effective compared to control in controlling seed borne fungi for the blotter method. The highest percentage of germination (93.33%) was recorded when the seeds of BARI Morich 1 were treated with BAU Bio-fungicide, whereas the lowest percentage of germination (61.33%) was recorded in case of untreated seeds. The highest percentage of healthy seedling (95.33%) was recorded when the seeds were treated with BAU Bio-fungicide and allamonda leaf extracts, whereas the lowest percentage of healthy seedling (59.00%) was recorded in case of untreated seeds. The highest vigour index (681.59) was recorded when the seeds were treated with neem leaf extracts, whereas the lowest vigour index (214.66) was recorded in case of untreated seeds.

Germination and seedling emergence responses of common bean and cowpea to plant extract seed treatments

“…(Pretorius et al 2002; Tegegne et al 2008; Masangwa et al 2013) against various plant pathogens have been reported. Similarly, previous studies have illustrated the effect of plant extracts, albeit positive or negative, as seed treatments on seed germination, emergence and health of various crop plants (Alabi et al 2005; Shafique et al 2007; Rani & Devanand 2011; Arzoo & Biswas 2013; Alam et al 2014; Chukwuka et al 2014). To be considered as a potential biocontrol agent, it is important that a plant extract showing activity against a pathogen does not exhibit any phytotoxic effects on the seed/seedling.…”

Chitosan and yeast elicitor in suppressing seed-borne fungi of cucurbitaceous vegetables

“…Tingda et al (1994) reported that, 0.1% chitosan help for the growth stimulation of cotton and maize seeds. Alam et al (2014) also reported that, 1% chiosan solution stimulate the germination percentage of chili seed and control seed-borne fungi associated with chilli seed. Similarly, seed priming with Yeast Elicitor solution showed that all doses of Yeast Elicitor solution reduced seed-borne fungal infection of cucurbits Yeast Elicitor (2000 ppm) significantly reduced the seed-borne fungal pathogens which is statistically similar to the 0.35% Vitavax-200 WP.…”

Identification moleculaire des champignons des semences chez l’Assamela suivi de leur protection a partir des poudres et extraits issus de plantes medicinales

“…Ce qui démontre que les poudres et extraits de plantes testés n'ont pas affecté la germination des semences comme rapporte dans les travaux de Mamun et Shahjahan (2011) et de Mahal (2014) pour ce qui est des semences de blé et de lentille respectivement. Ces résultats sont en accord aux études antérieures qui ont relevé que les extraits de plantes, ont des effets positifs sur la protection et la germination des semences, l'émergence et santé de plantules de diverses especes cultivees telles que le haricot, le blé, le maïs, la tomate et le piment (Alabi et al, 2005;Shafique et al, 2007;Rani et Devanand 2011;Arzoo et Biswas 2013;Alam et al, 2014). Cependant, pour être considéré comme un potentiel agent de biocontrôle, il est important d'envisager des tests d'efficacite de ces substances contre les agents pathogènes responsables des maladies des semences chez l'Assamela.…”