Among fungi only button mushroom is produced in large scale as high value food. Besides button there are many more mushrooms which are used as high value food and also used as costly ingredients in many processed food because of its rich food value. Income from those fungi is really unbelievable.
To cope up the present demand of production target and quality produces, trait specific crop improvement is imminent. Trait specific genes can be identified from rigorous evaluation of plant genetic resources.
Fungal diseases like Alternaria blight and white rust are common problem of oilseed Brassica crop. But in recent years appearance of leaf curl disease on various Brassica spp. is an indication of climate change effect because the disease caused by Croton yellow vein mosaic virus, transmitted by white fly is not usual phenomenon in oilseed brassica.