Studies On Biological Characters Of The Propagation And The Regulation Of Florescence Of Nobile-type Dendrobium

The key of cutting, aseptic seeding,regulation of florescence of pot Nobile-type Dendrobium production were studied in this paper.The results can be summaried as follows:1. Cutting:For D.Tomoflake'Akebono':the suitable concentration of NAA was 0mg/L.The bud rate with the treatment of NAA(0mg/L)was 73%,and the height of the young plant was 9.010cm,and the number of the root is 4.25,and the length is 2.3607cm,and the width is 0.1387cm.For D.Shigiriya lady:the suitable concentration of NAA was 100mg/L. The bud rate with the treatment of NAA(100mg/L)was 81%,and the height was 7.980cm,and the number of the root is 5.15,and the length is 1.4726cm,and the width is 0.2026cm.For D.Tomoflake'Akebono':the suitable concentration of 6-BA was 200mg/L,The bud rate is 52.1%.For D.shigiriya lady:the suitable concentration was 150mg/L.The bud rate is 79.2%.The experiment of different part of stem of D.Shigiriya lady showed that the better parts was the middle and the below ones.The bud rate of the middle one was 76.7%,and the later was 80%.Without hormone , cutting in spring and summer was 30d earlier than in autumn.While the bud rate in spring and autumn was 51.6% less than in autumn with 93%.2. The experiment of traditional hybridization showed as follows:Whether the hybridization was succeed could be judged primarily by seeing the fruit maintained green or not. Then after one month, judging by the bulgy germen ultimately. The fruit become ripe within 6-8 months.And the fruit could be crazed after 8 months.The average rate of fructification was 62.1%. D.Tomoflake'Akebono'could...