Performance of cassava mosaic resistant accessions for tuber yield and starch content

Cassava is one of the important climate-resilient crop tuber crop cultivated across the globe due its richest source of carbohydrates. Cassava is highly susceptible to Cassava Mosaic Disease (CMD), which cause major yield loss. The experiment on the performance of cassava accessions for tuber yield, starch content and resistance to cassava mosaic disease was conducted at Tapioca and Castor Research Station, Tamil Nadu Agricultural University, Yethapur, Salem District, Tamil Nadu. The results of the experiment revealed that there was significant difference among the accession for growth, tuber yield, quality and cassava mosaic disease resistance. Among the accessions, TCa16-1, TCa16-2, TCa16-5, TCa16-7 were non branching and the tallest plants 213.50 cm was observed in YTP 1 which is on par with Tca16-7 (210.20 cm), TCa16-12 (206.95 cm), TCa16-9 (205.50 cm), H 226 (205.00 cm), TCa16-1 (202.90 cm and TCa16-5 (200.69 cm). The maximum tuber yield (45.55 t ha^-1) and starch content (32.60%) TCa16-4. TCa16-1 recorded the CMD incidence of 94.60% followed by TCa 16-2 with CMD incidence of 93.90%. Among the check varieties, the incidence was maximum in H226 (96.50%) when compared to Sree Athulya which exhibited 22.50% of incidence.