关键词: 育种, 育种

Abstract:

In order to investigate the possibility of introduction of Rosa damascene tyigintipetala in the western HuBei, a two-year introduction experiment at different sites along an attitudinal gradient was did in Xingshan, Hubei. Growth status was recorded in the first year. In the second year, photosynthesis rate (Pn), WSC, LMA, flower yield and rose oil extraction rate were measured, the phenology was recorded, too. The results showed: (1) The growth was linearly related to attitude. (2) With attitude increased, the date of leaf unfolding and flowering were later, florescence period got longer and the date of leaf-fell were earlier. (3) It began to flower in the next year of introduction, an individual plant could yield 51-517 g flowers, the average oil extraction rate in laboratory was above 0.04%. (4) Individual yield was linear related to total leaf area and WSC, but had no association with LMA and Pn.