不同品种银杏净光合速率与黄酮含量的关系研究
摘要 以银杏叶为材料,用光合作用测定系统测定不同品种净光合速率,用分光光度法测定黄酮含量。研究结果表明,不同银杏品种净光合速率和黄酮含量差异均很明显,黄酮含量与净光合速率之间有联系,但彼此之间的线性关系不明显。总体来看,净光合速率高的品种,其黄酮含量也高,因此在净光合速率高的银杏中选择叶用品种较合适。
Abstract Using the leaves of Ginkgo biloba L. as sample,net photosynthetic rate and total flavonoids content were tested by photosynthesis system and spectrophotometry respectively. The results showed that there were significant difference of net photosynthetic rate and total flavonoids content among different Ginkgo biloba L. varieties. There was a certain linear relationship between net photosynthetic rate and total flavonoid content ,but the relationship was not obvious.Generally ,the Ginkgo biloba L. variety with high net photosynthetic rate also had high flavonoid content.It was reasonable to select the Ginkgo biloba L. varietiy with high net photosynthetic rate for leaf use.
Key words Ginkgo biloba L.;leaf use variety;flavonoid ;net photosynthetic rate
我国银杏(Ginkgo biloba L. )种源丰富,占世界的70%。银杏黄酮在医学和保健等方面有重要价值,是目前研究的热点。江德安等[1]发现不同品种银杏的光合强度差异明显;戴余军等[2]、江德安[3]研究了银杏不同品种的黄酮含量,发现不同品种黄酮含量存在很大差异;王宗德等[4]、岳 红等[5]研究发现不同地域银杏黄酮含量存在很大差异,不同地域的银杏差异主要还是品种差异。以上研究表明:不同银杏品种不但光合强度有差别,而且黄酮含量也有差异,但同时研究品种的黄酮含量和光合强度的关系尚未见报道。为此,本试验选择了12个银杏品种,同时研究其黄酮含量和光合强度,以探讨2个指标之间的关系,为选育高黄酮含量的优质叶用银杏品种提供理论依据。
1 材料与方法
1.1 试验材料
供试银杏叶片采集于安陆市王义贞镇,分品种采集。将采集到的银杏叶片洗净晾干去叶柄,置于恒温干燥箱中,于60 ℃干燥约24 h至恒重,用粉碎机粉碎,然后过40目筛,将过筛的银杏叶粉末装于棕色试剂瓶中密封,于冰箱中保存备用。
1.2 试验方法
1.2.1 黄酮含量测定的标准曲线。精确称取芦丁10 mg,置于50 mL容量瓶中,加入60%乙醇置于水浴锅上加热溶解,放凉,加入60%乙醇溶液定容,摇
不同品种银杏净光合速率与黄酮含量的关系研究
摘要 以银杏叶为材料,用光合作用测定系统测定不同品种净光合速率,用分光光度法测定黄酮含量。研究结果表明,不同银杏品种净光合速率和黄酮含量差异均很明显,黄酮含量与净光合速率之间有联系,但彼此之间的线性关系不明显。总体来看,净光合速率高的品种,其黄酮含量也高,因此在净光合速率高的银杏中选择叶用品种较合适。
Abstract Using the leaves of Ginkgo biloba L. as sample,net photosynthetic rate and total flavonoids content were tested by photosynthesis system and spectrophotometry respectively. The results showed that there were significant difference of net photosynthetic rate and total flavonoids content among different Ginkgo biloba L. varieties. There was a certain linear relationship between net photosynthetic rate and total flavonoid content ,but the relationship was not obvious.Generally ,the Ginkgo biloba L. variety with high net photosynthetic rate also had high flavonoid content.It was reasonable to select the Ginkgo biloba L. varietiy with high net photosynthetic rate for leaf use.
Key words Ginkgo biloba L.;leaf use variety;flavonoid ;net photosynthetic rate
我国银杏(Ginkgo biloba L. )种源丰富,占世界的70%。银杏黄酮在医学和保健等方面有重要价值,是目前研究的热点。江德安等[1]发现不同品种银杏的光合强度差异明显;戴余军等[2]、江德安[3]研究了银杏不同品种的黄酮含量,发现不同品种黄酮含量存在很大差异;王宗德等[4]、岳 红等[5]研究发现不同地域银杏黄酮含量存在很大差异,不同地域的银杏差异主要还是品种差异。以上研究表明:不同银杏品种不但光合强度有差别,而且黄酮含量也有差异,但同时研究品种的黄酮含量和光合强度的关系尚未见报道。为此,本试验选择了12个银杏品种,同时研究其黄酮含量和光合强度,以探讨2个指标之间的关系,为选育高黄酮含量的优质叶用银杏品种提供理论依据。
1 材料与方法
1.1 试验材料
供试银杏叶片采集于安陆市王义贞镇,分品种采集。将采集到的银杏叶片洗净晾干去叶柄,置于恒温干燥箱中,于60 ℃干燥约24 h至恒重,用粉碎机粉碎,然后过40目筛,将过筛的银杏叶粉末装于棕色试剂瓶中密封,于冰箱中保存备用。
1.2 试验方法
1.2.1 黄酮含量测定的标准曲线。精确称取芦丁10 mg,置于50 mL容量瓶中,加入60%乙醇置于水浴锅上加热溶解,放凉,加入60%乙醇溶液定容,摇