An improved CTAB method was used to extract winter buds and tender leaf of ten Species of Spiraea DNA and factors which affect the RAPD amplification were optimized and selected.

試驗(yàn)以10種繡線菊屬植物為材料中文字幕久久精品无码一区二区，采用改良CTAB法進(jìn)行冬芽和嫩葉的總DNA提取并對影響RAPD擴(kuò)增效果的因素進(jìn)行優(yōu)化97无码人妻免费视频碰碰碰69。

Polygenetic relationship among different types and resources of Narcissus was studied by RAPD and ISSR. And special marker in French type of Narcissus by RAPD was transferred to SCAR, which is more iterative and stable to identify this type materials.1. DNA concentration extracted from Narcissus by 2% CTAB little method was higher than that from other plants by this method or mass method. This indicated that tender leaf tissue with little cellulose was the direct cause of high deriving of Narcissus DNA.

本實(shí)驗(yàn)運(yùn)用RAPD、ISSR對58份不同類型幸福宝网站官网站、不同來源的水仙材料進(jìn)行親緣關(guān)系研究国产视频第1页，并將RAPD標(biāo)記中法國水仙型的特異標(biāo)記轉(zhuǎn)化為重復(fù)性和穩(wěn)定性好的SCAR標(biāo)記，用于該類型材料的鑒定等研究工作中91精品无码视频。

There are more catechins contanted in old leaf than in the tender leaf that was used for manufacturing tea. In this study, we propose a process to extract the catechins from the waste old tea leaf, eliminate the caffeine from the extract and assess the functional effects of the product.

然而制茶中所采用的嫩葉內(nèi)兒茶素的含量反而較茶農(nóng)修剪茶樹所遺棄的老葉內(nèi)之兒茶素含量為低毛片网址在线，故本研究的目的在於利用茶農(nóng)修剪茶樹后廢棄的老葉做為原料，而於從老葉提取兒茶素的過程中去除咖啡因亚洲see图10，并對其進(jìn)行抗氧化以及抑制人類癌癥細(xì)胞株生長等功能性評估一级A毛片美女精品大片。