Division of Vegetable Crops and Floriculture, Indian Agricultural Research Institute, New Delhi-110012
Rosa indica var. odorata—a new rose understock proved better than all the commonly used understocks in India namely Rosa bourboniana—Edouard (non-flowering type), Rosa bourboniana—Baramasi (flowering type Edouard) and Rosa multiflora (a form of briar), under Delhi conditions, with regard to rooting of cuttings, bud-take and plant vigour and flower production in budded plants. It was observed to be more tolerant to powdery mildew disease and also gave longer life to the plants.