Evaluation of the Growth, Yield, Quality and Genetic Diversity of some Rose Accessions at Gia Lam Ha Noi

Abstract

Although many varieties of rose have been introduced to Viet Nam in recent years, but rose growers are expecting and looking for the new rose varieties with high yield, good quality, pest resistance and adaptation to environmental conditions of Northern Viet Nam. We evaluated rose germplasm from different sources, i.e. from Vietnam, China, Japan and France with P3 as control. The experiment was carried out at VAC Center of Hanoi University of Agriculture during 2007. Results indicated that J P30, JP32 and Q6 varieties were equal to the control variety. The length of primary branches ranged from 66.3 cm to 69.7cm, stem diameters from 0.50 to 0.52 cm, flower diameters from 8.70 cm - 10.52 cm. These varieties exhibited high flower yield from 129,000 to 156,000 flowers /ha/season and good resistance to red spiders, black spot and rose powdery mildew. Genetic diversity analysis of 10 rose accessions by phenotype and molecular method using PAPD-PCR showed high diversity among these accessions that can be classified into two main groups. The first group can be further divided into two subgroups