Bitter gourd Yellow Mosaic Virus (BGYMV) is a Whitefly transmitted geminivirus. BGYMV causes yellow mosaic disease in bitter gourd. This disease attains significance because the virus causing this disease is capable of attacking the crop at all stages. There was a severe yield loss in bitter gourd plants due to the infection of BGYMV. Bitter gourd plants treated with Bougainvillea spectabilis challenge inoculated with BGYMV reduced the disease incidence and increased the plant growth. In the above treatment the disease incidence was 33.33% at 75 Days After Sowing (DAS). But in the inoculated untreated control the disease incidence was 100% at 75 DAS. The mean maximum plant height was 92.24 cm in plants inoculated at 65 DAS. Bougainvillea spectabilis treated plants challenge inoculated with BGYMV showed an increased activity of peroxidase, polyphenoloxidase and phenol content from 4 Days After Inoculation (DAI) to 12 DAI. The activity of all the enzymes was reduced from 16 DAI in all the treatments.

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The aim of the study was to screen the sorghum varieties (TNAU released sorghum varieties viz., K 12, CO 30 and local variety) for popping. The physico -chemical characteristics of the raw and popped sorghum varieties were analysed. To optimize the pretreatment for the preparation of popped sorghum different soaking solutions were selected and studied their effect on popping. The sorghum grains were popped by using continuous popping machine at a temperature of 230 °C for 2.5 min. The popping characteristics were analysed for sorghum varieties pretreated with different soaking solutions. From the physico -chemical and popping characteristics, it was concluded that the K 12 variety showed the maximum values.

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