leaf senescence中文是什么意思

發(fā)音:

中文翻譯
造句

葉的衰老

leaf n. 〔英軍俚〕休假。
senescence 變老; 老年期; 老朽; 衰老；老化; 衰老學(xué); 衷老
biology of senescence 衰老生物學(xué)
causes of senescence 衰老學(xué)說
cell senescence 細(xì)胞衰老
dental senescence 齒衰,牙齒衰老
end senescence 終端衰老期
escaped senescence 逃避衰老
onset of senescence 衰老的開始
organ senescence 臟器老化
ovarian senescence 卵巢衰老
prevent senescence 延緩衰老
psychic senescence 精神衰老
racial senescence 種族衰老
replicative senescence 性衰老
senescence form 衰老形
senescence lake 衰老湖
senescence of leaves 葉的衰老
senescence phase 衰老期；老年早期；開始老年期
species senescence 種的老化
varietal senescence 品種衰老
senescence-associated gene 衰老相關(guān)基因
tonifying spleen against senescence 健脾抗老
leaf n. (pl. leaves) 1.葉；〔集合詞〕葉子；茶葉，煙葉。 2.花瓣。 3.(書刊等的)一張(兩面)。 4.金屬薄片，箔。 5.【建筑】葉飾。 6.(門等的)頁扇。 7.(可折疊的)活動(dòng)桌面；(辦公桌等的)桌蓋。 8.(飛機(jī)的)天窗。 9.(步槍的)瞄準(zhǔn)尺；【機(jī)械工程】小輪齒。 10.〔英方〕帽邊。 11.(汽車等片彈簧的)簧片。 shed leaves (樹)落葉。 a rose leaf 一片玫瑰花花瓣。 come into leaf 長葉，發(fā)芽。 in leaf 生葉子的，葉茂盛的。 leaves without figs 空談，口惠而實(shí)不至。 take a leaf out of sb.'s book 模仿某人。 the fall of the leaf 落葉時(shí)；秋天。 turn over a new leaf 翻開新的一頁；革面洗心，過新生活。 vi. 1.生葉，長葉。 2.〔美國〕翻書頁。 The trees are beginning to leaf out. 樹木正在開始長葉。 leaf through a book 把書翻閱一遍。 vt. 翻…的書頁。 adj. -ed 有葉的。 adj. -less 無葉的。 n. 〔英軍俚〕休假。
the leaf 葉的感悟

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例句與用法

Effect of nitrogen application on flag leaf senescence and yield of spring wheat
氮素施用方式對(duì)春小麥花后葉片衰老與產(chǎn)量的影響
Effect of n application rates on leaf senescence and its mechanism in maize was studied by methods of field experiment , plant analysis and electron microscopy examination
采用田間試驗(yàn)、植株分析及電鏡檢測方法研究了氮肥用量對(duì)玉米葉片衰老的影響及其機(jī)制。
The results showed that both inadequate and excessive nitrogen application accelerated the decreasing process of leaf area index ( lai ) and chlorophyll content at later growth stage , which led to earlier leaf senescence
結(jié)果表明，氮肥用量不足或過量均加速了生長后期葉面積系數(shù)及穗葉葉綠素含量的下降進(jìn)程，使葉片提早衰老，但二者作用機(jī)制不同。
This paper reviewed the application of transgenic technique to tomatoes , introduced transgenic tomatoes with characters of delayed fruit and leaf senescence , disease and insect resistance , herbicide resistance , adversity resistan ce and good fruit quality
綜述了轉(zhuǎn)基因技術(shù)在培育延熟番茄、抗病蟲番茄、抗除草劑番茄、抗逆番茄、改進(jìn)番茄品質(zhì)和延緩葉衰老番茄等方面的研究進(jìn)展。
Large - scale hydrolysis of proteins occurs early in leaf senescence and is likely to dependent on the integrated action of groups of enzymes . the substrate for proteases in senescing leaves includes mainly enzymes and membrane proteins that function in photo synthesis
類囊體膜上結(jié)合的蛋白酶主要分為需能蛋白酶和不需能蛋白酶，參與類囊體膜蛋白和類囊體腔蛋白成熟時(shí)的加工以及外因?qū)е碌鞍踪|(zhì)功能喪失時(shí)的降解。
When inadequate n was added , the chloroplast structure in mesophyll cell was damaged in ear leaf , the amount of carbohydrate decreased in mestome sheath , and excessive n - redistribution and n - transportation to grain from vegetative mass appeared , which resulted in earlier leaf senescence . excessive n application led to too high activity of nitrate reductase , excessive vigorous nitrogen metabolism and too much exhaustion of carbohydrate in ear leaf , which resulted in the lack of enough carbohydrate in the lower leaf , meanwhile , the expansive chloroplast grana lamellae in leaf mesophyll cell and starch grain without nuclear in mestome sheath cell was observed , which led to the decrease of chlorophyll content and photosythetic capacity in maize leaf , then the early senescence occured
氮肥用量不足導(dǎo)致穗葉葉肉細(xì)胞葉綠體結(jié)構(gòu)性差，維管束鞘細(xì)胞碳水化合物累積減少,營養(yǎng)體氮素再分配率大而引起葉片早衰；而過量供氮?jiǎng)t導(dǎo)致生長后期硝酸還原酶活性過高，氮素代謝過旺，消耗了大量碳水化合物，以致下位葉不能得到充足的碳水化合物供應(yīng)而提早脫落，同時(shí)葉肉細(xì)胞葉綠體片層結(jié)構(gòu)膨脹，呈“肉汁化”特征，維管束鞘細(xì)胞淀粉粒大量消耗，無核淀粉粒出現(xiàn)，從而葉片葉綠素含量下降，光合能力降低而出現(xiàn)早衰。

其他語種釋義

leaf senescenceとは意味：leaf senescence 葉の老化[醫(yī)生]

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