Screening of cauliflower (Brassica oleracea L. var. botrytis L.) germplasm for resistance to downy mildew [Hyaloperonospora parasitica Constant (Pers.:Fr).] and designing appropriate multiple resistance breeding strategies - Singh, S.; Sharma, S. R.; Kalia, P.; Sharma, P.; Kumar, V.; Kumar, R.; Meena, B. L.; Kumar, S.; Sharma, T. R.