The early-maturing Shih-Shih was characterized by high TNC levels in leaf blades and stems, especially in the spring crop season.

• 早熟品种十石之叶片与茎内含有较多量非构造性碳水化合物，尤以春作之生殖生长期更为明显，是否与产量稳定性有关，尚待继续研究。