The results showed that the mean proportion of polymorphic loci ( ppb ) of anabasis aphylla, which comprised 3 subpopulations ( 58 individuals sampled ), generated by 16 primers was 94. 56 %, the value of ppb of ceratocarpus arenarius, which had 4 subpopulations ( 80 individuals sampled ), using 16 primers was 98. 00 %. the paper had proved that the higher genetic diversity and the genetic differentiation existed in the populations of boih anabasis aphylla and ceratocarpus arenarius, while the latter had much more genetic diversity than the former. moreover, the study discussed the shannon information index and nei ' s gene diversity index of the two species natural populations, which indicated that there were more genetic variations within the subpopu
另外,通過rapd資料的聚類分析及相關性分析研究,發現無
葉假
木賊和角果藜自然種群的遺傳結構與綠洲沙漠過渡帶的微生境生態因子(主要是土壤因子)相關,其中無
葉假
木賊亞種群遺傳多樣性水平不僅與土壤含水量( w ) 、鉀鈉離子濃度( k + na )和氯離子濃度( cl )呈顯著的正相關( p 0 . 05 ) ,還與土壤中有機質( som ) 、全氮( nt )和全磷( pt )含量呈顯著的負相關;同時,角果藜種群的遺傳多樣性水平與土壤中有機質( som )和全氮( nt )含量呈顯著的正相關,而與co _ 3 ~ ( 2 - )濃度呈顯著的負相關;除此之外,其它土壤生態因子與兩物種遺傳多樣性水平的相關性均不顯著(卜0 . 05 ) 。
Thus passed the leafy time when arborescence seems to be the one thing aimed at out of doors
當樹
木似乎變成戶外最集中的事物時,樹
葉生長的季節就這樣過去了。
Camellia granthamiana is a type of tree, its leave alternate, elliptical, coriaceous, margin with small blunt teeth. upper leaf surface is shining darkgreen, lower is paler and with veins protruding and clearly marked
大苞山茶是一種常綠喬
木,
葉互生,橢圓形,具革質,
葉面光亮深綠色,
葉背色淡,有清晰
葉脈琥凸出,而
葉緣具細小的純。
Camellia granthamiana ) is a type of tree, its leave alternate, elliptical, coriaceous, margin with small blunt teeth. upper leaf surface is shining darkgreen, lower is paler and with veins protruding and clearly marked
大苞山茶是一種常綠喬
木,
葉互生,橢圓形,具革質,
葉面光亮深綠色,
葉背色淡,有清晰
葉脈琥凸出,而
葉緣具細小的純齒。
Cutting decals, leaf pattern, and variable glaze decoration are unique
剪紙貼花、
木葉紋、窯變釉等裝飾具有獨特性。
The larvae of late instars always array in lines on the leaves exposed to the sun to catch the heat of light, so they are easily to be found and eaten by birds
幼蟲取食楠
木葉,大齡幼蟲常成排爬在向陽面
葉片的正面曬太陽。因而容易被鳥類捕食。
Far away through the plantation vega sparkled like a lamp suspended amid the leafless trees.
透過遠處的樹林,織女星象一盞燈似地掛在
木葉盡脫的樹枝間。
Experiment on leave surface fertiliers spray of acacia mangium seedlings
馬占相思苗
木葉面施肥試驗
The self - poisoning effects of chinese fir plantation are studied through the seed germination experiment with the extracts of organs, bulk soils and rhizosphere soil of different rotation plantations. the results are as follows : there are some poisonous substances inhibiting germination of chinese fir seeds in soils of chinese fir plantations. the inhibiting effect becomes stronger and stronger with increase of planting generations. extracts from the organs of chinese fir trees also have some inhibiting effects on seed ' s germination, but the effect of leaf is the strongest. lower concentration extracts of underground vegetation may be favorable to the seed ' s germination whereas the higher concentration will reverse the results. it indicates that the “ self - poisoning ” effects of chinese fir plantations might be one of the reasons for poor natural regeneration and soil degradation of chinese fir plantation
利用不同栽植代數杉
木人工林根際土、非根際土及杉
木各器官浸提液進行杉
木種子發芽試驗,研究杉
木人工林自毒作用,研究結果表明:杉
木林根際土及非根際土中均存在抑制杉
木種子萌發的物質,隨栽植代數增加抑制作用更趨明顯;杉
木各器官浸提液對杉
木種子萌發也有抑制作用,其中以杉
木葉的抑制作用最為明顯,杉
木林下常見植物對杉
木種子發芽則表現為低促高抑效應,說明杉
木人工林存在自毒作用,這可能是杉
木連栽障礙的原因之一。
Cutting decals and leaf variable glaze colors embodies the decorative expression profile of the " primary furong, a lovely natural " beauty, and subtle and introverted cultural implications
剪紙貼花、
木葉紋及各色窯變釉等裝飾體現了「初發芙蓉,自然可愛」之美和含蓄、內向的文化意蘊。
Take the kanachu bus for tama center via onojiaokiba koen, from tsurukawa station to the nakajuku bus stop for 20 minutes, and walk back one minute from the bus stop toward the left hand side
神奈中巴士鶴川站中宿巴士站20分鐘 「經過小野路?青
木葉公園多摩中心方向」 中宿巴士站出口往回步行1分鐘左側
Take the kanachu bus bound for tsurukawa terminal via aokiba koenonoji from the tama center bus terminal to nakajuku bus stop for 10 minutes, and walk one minute in the direction the bus was traveling ( left - hand side )
神奈中巴士多摩中心站中宿巴士站下車10分鐘 「經過青
木葉公園?小野路去鶴川站方向」 中宿巴士站下車沿開車方向步行1分鐘左側
Genes are a kind of code. a tree ' s genes tell what shape its leaves will be. your genes tell what color your eyes will be
基因是一種生命編碼。樹的基因決定了樹
木葉子的形狀是什麼樣的。而你的基因決定了你的眼睛的顏色。
Construction of leaf and leafstalk regeneration systems in two cherry rootstocks
櫻桃砧木葉片和葉柄再生體系的構建