Comparative Characteristic and Storage Period Egg of Erisilk (Philosamia ricini Boisduval)

Abstract

The experiment was conducted at Queen Sirkit Sericulture center (Phrae) during January to December 2012. Comparative characteristics of  Eri-silk worm 4 varieties were Thai, Chiang mai and Lampoon varieties. The experiments were designed as CRD with 3 replications. Five continued experiment of the varieties were conducted. It was found Eri-silk all varieties can be servived at the Queen Sirikit Sericulture centre (Phrae) and the most of total yield was Chiangmai varietiy (2815.70 g). The second China varietiy was 2720.01 g, next Lampoon varieties was 2517.59 g the last Thai varieties was 2464.00 in a significant difference. And the comparative genetic of eri-silk worms were using amplified fragment length polymorphism (AFLPs). It found that all varieties of Eri-silk worms are genetically close – related. And then long duration of cold preservation study were refrigerated. The RCB with 3 replications and 5 treatments were used as an experimental design. The results showed that the age of eggs 3 and 5 days. It high hatchability storage at 5 ºC before 5 days were 551 and 607 eggs respectively