Germination Conditions of Qiongzhuea tumidinoda Seed and Mineral Element Analysis of Qiongzhuea tumidinoda Shoots

Chimonobambusa tumidissinoda is a rare culm and shoot-producing bamboo species with high economic value. In this study, the seed germination experiments were carried out under different temperature and light conditions, and the contents of 8 mineral elements in three C. tumidissinoda shoots with different excavated height（2 cm, 5 cm and 8 cm） were determined by air-acetylene flame atomic absorption spectrometry after the seedlings were grown. The results showed that the optimum conditions for seed germination were 20 ℃, 12 h light/12 h darkness, but 25 ℃ and dark treatment could promote radicle elongation better. And, C. tumidissinoda shoots at different growth stages had abundant potassium content(6 521.13—7 405.24 mg·kg^-1), followed by sodium content(625.56—814.83 mg·kg^-1) and the lowest copper content(6.86—9.62 mg·kg^-1). The contents of K and Na in C. tumidissinoda decreased gradually with the increase of height, while the contents of Ca, Fe, Cu and Mn increased gradually. The Zn content showed a mid-peak dominant change, and the Mg content basically remained unchanged. This study provided a reference for seed germination and bamboo shoot quality improvement.