**Author details**

soybean were screened for pod shattering resistance under lab condition. The pod shattering values ranged from 8.7 to 93.3 per cent. JS-335 one of the most popular variety recorded as tolerant with mean pod shattering value of 10.3 per cent. It is evident from the table that, none of the genotypes were better than the JS-335 except Himsoy-1560, which recorded 8.7 per cent mean pod shattering value. Among 84 genotypes, 20 genotypes fall under tolerant category and 32 under moderately shattering. Fifteen Indian soybean varieties were screened for pod shattering resistance and out of these three varieties viz., JS-1515, JS-1608 and JS-1625 were found resistant against pod shattering [16]. Similarly, while screening for pod shattering resistance, Bragg and JS-71-05 recorded the lowest pod shattering and Punjab-1 with highest

Among many of the diseases in soybean, rust is the major fungal disease which may reduce the yield drastically. So identification of resistant sources and involving them in resistant breeding forms one of the criteria in resistant breeding programme. In the present study 84 genotypes of soybean were screened for rust resistance under natural epiphytotic condition. None of the genotypes showed immune reaction. However, genotypes EC-241778 and EC-241780 showed resistance reaction. Remaining all genotypes exhibited highly susceptible reaction. In general, over all disease incidence was very high. Similar results are reported in [9], who evaluated several soybean genotypes and varieties under natural epiphytotic condition and reported EC-392530, EC-392538, EC-392539, EC-392541, SL-423, RSC-1, RSC-2, JS-80-21 and PK-1029 as moderately resistant. Hundekar (1999) also evaluated S-22, WC-12 and 92-10 as rust resistant germplasm. Among varieties PK-1162, PK-1029, JS-80-21 and PK-1024 showed moderately resistant reaction with better yield. Basavaraja (2002) identified three useful mutants which are moderately resistant to rust among 270 induced mutant families studied in M3 generation. Similar results were also reported by various researchers [8,

Yellow mosaic is one of the major viral diseases in India and it is causing major problem during *rabi*/*summer* in Utter Pradesh in recent years. The yield loss due to disease may range from minor to complete loss depending upon severity. So identification of resistant sources will help in optimum management and thus help in future breeding programmes. In the present study, 84 genotypes of soybean were taken for screening against yellow mosaic disease under natural conditions. None of the genotypes tested were immure to the disease. Over the entire disease incidence was high which was evident from the results as most of the genotypes fall under the category moderately susceptible to susceptible. Similar results were also reported [6, 17]. They screened 88 indigenous and exotic soybean genotypes in the field and found EC-107014,

pod shattering value [12]. Similar results were also reported [1, 13].

**4.2. Screening for rust resistance**

182 Soybean - Pest Resistance

**4.3. Screening for yellow mosaic disease**

EC-107003 and EC-100777 resistant.

10, 14, 15]

M. H. Khan1 , S. D. Tyagi2 and Z. A. Dar3

1 Central Institute of Temperate Horticulture, Indian Council of Agriculture Research, Srina‐ gar, India

2 Department of Plant Breeding and Genetics, Kisan (P.G) College, Simbhaoli, Ghaziabad, India

3 S.K. University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, India
