Bombyx mori breeding. Silkworm breeding is aimed at the overall improvement of silkworm from a commercial point of view. The major objectives are improving fecundity (the egg-laying capacity of a breed), the health of larvae, quantity of cocoon and silk production, and disease resistance. Healthy larvae lead to a healthy cocoon crop. Health is dependent on factors such as better pupation rate, fewer dead larvae in the mountage, shorter larval duration (shorter larval duration lessens the chance of infection) and bluish-tinged fifth-instar larvae (which are healthier than the reddish-brown ones). Quantity of cocoon and silk produced are directly related to the pupation
Mori Trust Mori Trust Mori Trust was founded in 1970 as Mori Building Development, a subsidiary of the Mori Building group founded by Taikichiro Mori. Following his death in 1993, his two sons Minoru Mori and Akira Mori disagreed as to how to continue the business, with Minoru wishing to continue the company's focus on existing properties and new large-scale urban projects, and Akira wishing to expand the company's portfolio into more small-scale office and leisure properties. This led to a split of the Mori Building group, with Akira Mori taking over the Mori Building Development entity and renaming it "Mori Trust"