8/26/2023 0 Comments Bacterial blight of pomegranateThe culture and PCR based detection assay further confirmed that the bacterial blight pathogen displayed no translaminar systemic movement and caused only localized lesions. punicae infects plant tissues through both natural opening as well as by injuries. ![]() The spray method of inoculation is, therefore, recommended as a rapid, reproducible screening technique for pomegranate genotypes in resistance breeding programmes. punicae is a major disease of pomegranate. The most favorable condition for onset of blight as well as completion of disease cycle was when temperature ranged between 25-35☌ for at least 16h and relative humidity >30% for 24h. Bacterial blight caused by Xanthomonas axonopodis pv. Pomegranate is one of the major cash fruit crops grown in India. as a cause of new bacterial blight disease of pomegranate in Maharashtra, India in addition to Xanthomonas axonopodis pv. punicae Authors: Jyotsana Sharma National Research Centre On Pomegranate K K Sharma. The incubation period for blight development ranged from 4 to 19 days depending on temperature and humidity conditions. To the best of our knowledge, we report Pseudomonas sp. Pomegranate bacterial blight: Symptomatology and rapid inoculation technique for xanthomonas axonopodis pv. Besides, the lesions which appeared on plants mimicked the natural symptoms observed in orchards. Blighted leaves will have small, dark brown spots that eventually turn black and kill the leaf. It can affect all parts of the plant, but is most commonly seen on the leaves. Spray method was found to show blight symptoms on leaves with incidence of 71.0% and severity of 55.5%. Bacterial blight is a serious disease of pomegranate caused by the bacterium Pseudomonas savastanoi. From the year 2002, growers are in dire straits due to severe outbreak of bacterial blight caused by Xanthomonas axonopodis pv. punicae on pomegranate, the spray method convincingly proved that spraying of inoculum yielded highly reproducible symptoms within 21 days under optimal temperature and humidity conditions and up to 39 days under less favourable conditions. Among nine different inoculation methods evaluated for X. The pathogen caused blight symptoms on all plant parts except roots and flower. Bacterial blight of pomegranate caused by Xanthomonas axonopodis pv. that was recently reported to cause a new bacterial blight of pomegranate. Some of the symptoms are reported for the first time. Two morphologically different bacteriophages were isolated from the river and soil samples from various locations of Maharashtra, India against the phytopathogen Pseudomonas sp. punicae on various pomegranate plant parts including fruit are described and illustrated. Almost all injured leaves were infected with the disease and no control of disease was observed in both the treatments.Complete range of symptoms of bacterial blight caused by Xanthomonas axonopodis pv. ![]() In this study of curative effect of micronutrient spray and humic acid drench, injury was made to five (5) leaves with sterilized needle in every concentration of all micronutrients and humic acid before spraying of bacterial blight suspension and observed the incidence of the disease. Therefore, a study was carried out to find out eco-friendly solution to mitigate the disease with the help or application of micronutrients and humic acid. The bacterium has developed resistance to commonly used fungicides and antibiotics. The disease affects all the above ground plant parts including flowers, leaves, twigs, stem buds and fruits but it is more destructive when fruits are infected. punicae is an economically important disease of pomegranate in Maharashtra. It suffers from various diseases, amongst them bacterial blight caused by Xanthomonas axonopodis pv. It has high nutritional as well as medicinal values. Pomegranate belonging to family Punicaceae is one of the consumers’ preferable and favorite dollar earning table fruit of tropical and subtropical regions.
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