International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 2
First page : (90) Last page : (98)
Article doi:http://dx.doi.org/10.18782/2320-7051.6324

Decadal Status of Pathotypes Distribution and Rusts Resistance Screening in Breeding Materials against Black and Brown Rusts of Wheat

S. I. Patel and Elangbam Premabati Devi*
Wheat research station, Vijapur 382 870, SDAU, Gujarat
*Corresponding Author E-mail: epremabati35@gmaiil.com

 ABSTRACT

Evolution of new virulent races/pathotypes by mutation which can overcome existing resistant cultivars make the management of rusts a challenging task. The pattern of dynamism of black and brown rusts pathotypes in Gujarat during the last decade revealed that out of seventy five samples analyzed primarily four pathotypes (majority were 11 and 40A) were identified for black rust while two pathotype viz. 21R55 (104-2), and 121R63-1 (77-5) were overarching in their presence followed by 77-11, 77, 104-B, 104-3, 77-6, 77-1, 77-2, and 77-8 in the range of 1 to 18 per cent for brown rust. Screening of irrigated and rainfed wheat breeding materials of different stations for both black and brown rusts under artificial epiphytotic conditions in last decade at Vijapur suggested that total entries including both irrigated and rainfed wheat of  2871, 2775, 404, 1881, and 117 of Vijapur, Junagadh, Anand, Arnej, and Dhandhuka respectively, were screened so far accounted from 2007-08. It was cleared that most of the screened stations breeding materials were characterizing a good source of resistance which were depicted by resistance percentage of 83.80, 62.48, and 33.33 in irrigated wheat entries of Vijapur, Junagadh and Anand respectively while 34.56 and 35.12 per cent of resistance in rainfed wheat entries of Dhandhuka and Arnej against black rust. Although, 91.71, 85.30, and 45.30 in irrigated wheat entries of Vijapur, Junagadh, and Anand while 49.50 and 48.76 per cent of resistance were depicted in rainfed wheat of Dhandhuka and Arnej against brown rust.

Key words: Adult plant resistance, Black rust, Brown rust, Pathotype/race, Seedling resistance.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Patel, S.I. and Devi, E.P., Decadal Status of Pathotypes Distribution and Rusts Resistance Screening in Breeding Materials against Black and Brown Rusts of Wheat, Int. J. Pure App. Biosci.6(2): 90-98 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6324