One of New Zealand's leading growers, Bostock, is stepping up the supply of its new Kabocha squash hybrid, the Marron d'Or into the Chinese market, after last year's initial shipment proved to be a major hit with consumers. Owner John Bostock says the company shipped 1,000 tonnes last year "as a sample", with plans to increase volumes throughout the coming year. "It's a Japanese variety that is not available in China," he said. "The Chinese do like Japanese cuisine and it is gaining a lot of traction. It has a sweet, nutty flavour - which is really delicious - stays…