Inheritance of adult plant stripe rust resistance in wheat cultivars Capelle Desprez and Pari 73

Abstract

Wheat stripe rust caused by Puccinia striiformis Westend f. sp. Tritici is one of the most damaging diseases affecting bread wheat in high altitudes of the southern and northern areas of temperate zones [1]. This disease can result in weakened plants leading to high yield loses due to shriveled grain and damaged tillers [2]. Capelle Desprez, a bread wheat cultivar moderately resistant to stripe rust was widely cultivated in Europe without fungicide treatment during the 1960s and 1970s. Therefore, is considered to have durable resistance. This report deals with the inheritance of stripe rust resistance of Capelle Dsprez and a Pakistani cultivar Pari 73 those have been showing good level of adult plant resistance in India under artificial inoculations since early eighties. Allelic relationship amongst the stripe rust resistance genes (Yr genes) in cultivars Capelle Desprez and Pari 73 and also with Yr18, a gene known to confer durable resistance to stripe rust is also reported.