筇竹种子发芽条件及筇竹笋矿质元素分析

筇竹为珍稀笋材两用混生竹,具有较高的经济价值.本研究对筇竹种子进行不同温度和光照条件的萌发实验,并培育实生苗发笋后,利用空气-乙炔火焰原子吸收光谱法测定了3个不同出土高度(2 cm,5 cm,8 cm)的筇竹笋中8种矿质元素的含量.实验结果显示,最适宜筇竹种子萌发的条件是20℃,12 h光照/12 h黑暗,但25℃和暗...

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(6521.13—7405.24 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.