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Sunflower Necrosis Disease – A Threat to Sunflower Cultivation in India: A Review

Papaiah Sardaru, A. M. Anthony Johnson, Buddolla Viswanath, Golla Narasimha*

Abstract


Among different diseases infecting sunflower (Helianthus annuus L.), sunflower necrosis disease (SND) which was observed for the first time in 1997 has emerged as a major disease of sunflowers in India. The disease has been noticed in an epidemic form consecutively for the last twelve years and the incidence is ranging from 5-90 per cent both in open pollinated varieties and hybrids. Disease incidence is a function of various aspects of host, vector, weather, time and its transmission. Effect of necrosis disease on yield and yield parameters of sunflower are very adverse and it includes reduction of plant height, leaf area and chlorophyll content of plant at all growth stages of infection. In this review, we describe the incidence, transmission, and recent advances of molecular and serological detection of virus and their preventive measures. Finally concluded that an integrated control measures have evident benefits and should be fostered and promoted as a means of enhancing crop productivity to meet the increasing demands of a rapidly increasing human population.

Keywords


Tobacco streak virus; Necrosis Disease; Sunflower plant; Transmission; Thriphs.

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