Screening of Brassica juncea against white rust in modified triple test cross mating design

Author: Sunidhi Tiwari, Vedna Kumari, S. K. Gupta, Harpreet Singh, Rakesh Kumar and Ashok Kumar

Download PDF

Abstract

Oilseed crops known to be the backbone of various agricultural economies from ancient times and play an important part in the agricultural industries as well as trade throughout the world. Brassica juncea (Indian mustard) belongs to family Brassicaceae, is a prominent oilseed crop cultivated globally. White rust is a devastating disease of oilseed Brassicas and it is desirable to find useful sources of host resistance in B. juncea as for control, breeding as well as selection for resistance is the most economical method of control. A study was carried out in the experimental field of CSKHPKV Palampur in the year during rabi 2019-2020 to 2020-2021 for generating the material by crossing of 12 lines with 3 testers (RCC-4 (P1, susceptible source), Donskaja IV (P2, resistant source) and their F1) to analyze in the randomized block design in the year 2021 to 2022. Screening of 12 lines with three testers and thirty-six crosses of Brassica juncea were done for their disease evaluation of White rust on leaf as well as pods. Out of 12 lines six genotypes were found moderately resistant and six were found susceptible. Among 36 crosses, 14 were found moderately resistant and 12 were found moderately susceptible and 10 were found susceptible to white rust.

Keywords

Oilseed, White rust, Destructive, Crosses, Resistant

Conclusion

In this study, 12 lines, three testers of Brassica juncea and 36 crosses were screened for reaction to white rust under natural epiphytotic field conditions on 0-9 scale given by Conn et al. (1990) and observations on disease severity were recorded on the basis of visual observations. Out of 12 lines six genotypes were found moderately resistant and six were found susceptible. Among 36 crosses, 14 were found moderately resistant and 12 were found moderately susceptible and 10 were found susceptible to white rust.

References

-

How to cite this article

Sunidhi Tiwari, Vedna Kumari, S. K. Gupta, Harpreet Singh, Rakesh Kumar and Ashok Kumar (2022). Screening of Brassica juncea against white rust in modified triple test cross mating design. Biological Forum – An International Journal, 14(4): 1028-1031.