PJB-2009-34
SELECTION OF BARLEY GERMPLASM RESISTANT TO SPOT BLOTCH
SHAMIM IFTIKHAR, SHAHZAD ASAD, ATIQ-UR-REHMAN RATTU, MOHAMMAD FAYYAZ AND ANJUM MUNIR
Abstract
Spot blotch is a common disease of barley and wheat caused by Bipolaris sorokiniana (Cochliobolus sativus). The disease is found where ever barley is grown. Total 130 lines of barley (provided by ICARDA – CIMMYT Wheat Improvement Program) were screened for resistance to spot blotch caused by Bipolaris sorokiniana under controlled and natural conditions at NARC (National Agricultural Research Centre) Islamabad, Pakistan. Out of 130 lines, 7 barley lines viz. Jet, Bey, Forrajera, Beecher, Fiaz, Manchuria and Munch Palidum showed single gene base resistance under controlled and field conditions. However four lines including ETHIOPIA (CI 08755), ETHOPIA (CI 20019), Mac Key-4 and Mac Key-9 gave maximum disease reaction (MRMS) at seedling stage under controlled conditions while they gave low disease reaction (R) at adult stage. These four lines may have more than one gene involvement and can further be exploited as a source of resistance to spot blotch in the breeding programme.
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