1Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India
*Corresponding Author: T.K.S. Latha, Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India, Email: tkslatha@gmail.com
Online published on 22 November, 2024.
Urdbean leaf crinkle disease (ULCD) is one of the most devastating biotic stress factors which is responsible for drastic yield loss in urdbean [Vigna mungo (L.) Hepper]. The etiology of ULCD is still unknown and there are conflicting reports on its transmission through seed, insect vectors, grafting and infected sap.
Per cent seed transmission of ULCD had been studied during kharif, rabi and summer during the year 2019-2020 under natural and insect proof conditions. The effect on yield and seed quality parameters due to ULCD infection was studied. Urdbean cultivar VBN 8 was used in the present study.
The per cent seed transmission of ULCD was recorded ranging from 52.88 to 71.64% under natural conditions. In the insect proof glasshouse condition, the seed transmission was 83.62%. All the yield and seed quality parameters were adversely affected upon ULCD infection. The reduction in yield was recorded as 64.36% over the uninfected healthy plants. In ULCD infected seeds, the germination was reduced (84%) as compared to healthy seeds (92%).
Insect proof condition, Natural conditions, Seed quality parameters, Seed transmission, ULCD, Urdbean, Yield parameters
