云南箭竹化学成分分析及不同地理种源之比较

Researches on the Chemical Constituents of Fargesia yunnanensis and the Comparison of its Different Geographic Provenances

通过对不同地理种源的云南箭竹化学成分进行的研究结果表明:不同年龄间的云南箭竹的化学成分之间差异不明显,不同地理种源的云南箭竹化学成分含量差异不显著。其中采自西山云南箭竹竹秆的S iO2含量为2.02%,白马河林场云南箭竹的S iO2含量为1.87%,大理云南箭竹的S iO2含量为1.93%;西山云南箭竹的灰分含量为2.56%,白马河林场云南箭竹的灰分含量为2.69%,大理云南箭竹的灰分含量为2.29%;苯-醇提取物的含量西山云南箭竹为3.47%,白马河林场云南箭竹为4.03%,大理云南箭竹为4.01%;木质素的含量西山云南箭竹为26.58%,白马河林场云南箭竹为23.39%,大理云南箭竹为23.74%;综纤维素的含量西山云南箭竹为70.86%,白马河林场云南箭竹为55.45%,而大理云南箭竹为69.56%。由于不同地理种源之间云南箭竹秆材的化学成分含量的差异并不显著,因而在筛选云南箭竹作为材用竹推广引种时,并不需要考虑地理种源因素。

Studies were made of the chemical constituents of Fargesia yunnanensis from different geographic provenances. The results showed that the chemical constituents of different-age culms appeared to show relatively small difference and the chemical constituents of bamboos from different geographic provenances were similar. The SiO2 contents in bamboo culms were 2. 02% （ from Xishan）, 1.87% （ from Baimahe） and 1.93% （from Dali） ,respectively. The ash contents in bamboo culms were 2. 56% （from Xishan）, 2. 69% （from Baimahe） and 2. 29% （from Dali） ,respectively. The alcohol-toluence extractive contents in bamboo culms were 3.47% （ from Xishan）, 4. 03% （ from Baimahe） and 4.01% （ from Dali） ,respectively. The lignin contents in bamboo culms were 26. 58% （from Xishan）, 23.39% （from Baimahe） and 23.74% （ from Dali ）, respectively. The holocellulose contents in bamboo culms were 70. 86% （from Xishan）, 55. 45% （from Baimahe） and 69. 56% （from Dali） ,respectively. Because the chemical constituents of bamboos from different geographic provenances were similar, the factors of different geographic provenances do not need to be considered in the introduction and popularization of species.