Field reaction of some wheat advanced lines and cultivars to common root and crown rot pathogens in fars province

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Abstract

Common root and crown rot, mainly caused by the soil fungi, Bipolaris sorokiniana and Fusarium spp. is a serious problem in some wheat growing areas in Fars province, Iran. Resistance or tolerance is an important control strategy In a study conducted during 1995-1997, 114 advanced lines and cultivars of wheat (Triticum aestivum L.) were screened in a highly infested field at Bayza district, Fars province for reaction to the disease. Ten lines and cultivars showed considerable field resistance or tolerance. Among these, six yellow rust resistant/tolerant lines or cultivars were selected and compared for yield in a randomized complete block design with four replications established in a highly infested soil at Estahban (moderate ) and Ghir-Karzin (warm) regions of the province in 1997-98. Cultivar Marvdasht and line M-75-20 had the highest yields in the moderate and cultivar Chamran in the warm regions of the province (p=1 %). Based of these results, cv. Marvdasht is recommended to be planted in the infested fields of the moderate,- and cv. Chamran in the warm areas of the province.

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