Relationship of Whitefly Population Build up with the Spread of TYLCV on Eight Tomato Varieties

Abstract

The performance of eight tomato varieties namely BARI-T1 (Manik), BARI-T2 (Ratan), BARI-T4, BARI-T5, BARI-T6 (Apurba), BARI-T7 (Chaity), BARI-T11 and BARI-T12 were evaluated in respect to

Assessment of mungbean genotypes for durable resistance to Yellow Mosaic Disease: Genotype × Environment interactions

“…The population of whitefly also depends on environmental factors like temperature, humidity and rainfall as also reported earlier (Rahman et al. , Islam et al. ).…”

Variations of Incidence, Types of Virus Diseases and Insect Vector Populations of Tomato (Solanum lycopersicum L.), Grown in Different Agroecological Regions of Sri Lanka under Two Crop Management Systems

“…This agrees with the positive correlation of whitefly population buildup in tomato fields with temperature that has been reported by Gupta (2000), Sultana (2001), Paul (2002), Haque (2002) and Parvin (2002). Rahman et al (2006) also reported a weak positive quadratic polynomial relationship between temperature and whitefly population build up in tomato fields. However, in the present study, significant relationship was not observed between virus disease incidence and the rainfall.…”

“…Rahman et al (2006), Mehta et al (1994), Gupta (2000), Paul (2002) and Parvin (2002) have reported an increase of whitefly population and its positive correlation with the spread of TYLCVD under field conditions. However, Ssekyewa et al (2007) reported that virus occurrence varied in space and time, and with management practices, crop development stage, and weather conditions based on field experiments conducted on TYLCV and tomato leaf curl virus (ToLCV) using two crop management systems (i.e.…”

“…Accordingly, lower disease incidence observed especially at Rahangala could be related to the lower or no abundance of vectors. As reported by Rahman et al (2006), the number of whiteflies caught under field conditions could be reduced drastically due to rainfall, maturity of the crop which is not preferred by the vectors as well as availability of preferred weedy plants outside the field. Behaviour of thrips shows similarities to that of whiteflies, thus underestimating their abundance.…”

“…A clear relationship between the types of virus diseases and locations or types of management systems could not be identified. Field symptoms have been used to identify TYLCV-infested plants and healthy plants in a study done by Rahman et al (2006) when determining relationship of whitefly population buildup and TYLCVD development. Moreover, TCTVD shows typical purple colouration on foliage.…”