Protection of genetic material is the most important thing in let production of seeds. As our contract farmers and growers have been working with us for several years, they well understand the principles of genetic ownership and anyone who goes against the protection of genetic material will be expelled from the seed production group. Meanwhile, contract seed production under customers’ demand is the sole business of Topsource & Jiuzhou, we don’t sell any seeds except those surplus of over-production with customers’ consent.

For that hybrid F1 seed production, we usually plant male line seedlings in our own plastic house while those of female line in grower’s field. Currently we are studying some new genetic protection method like cryo-pollen hybrid seed production, which adopts cryopreservation of pollen.

In year 2007, we planned some trial production in Liaoning province. Now we get the final seed testing report, all seeds produced their passed both the lab test and grow out test.

Due to the unique geographical circumstance and climate, this new production base in Liaoning provine is perfect for dutch type cucumber, eggplant, bittergourd, towel gourd.

In 2008, we enlarged the trial scale and next year, heavy quantity of previos species and varieties will be transfered here.

In most cases, seed crop growing in vegetable seed production requires environmental conditions that are very different from those for the harvest of the market-use vegetable crop. For example, ambient temperature, photoperiod, length of growing season, and precipitation amount and distribution may vary for the optimum production of market-use and seed crops. The following represents general requirements and considerations utilized in vegetable seed production.