leaf apex 中文意思是什麼
leaf apex
解釋
葉端-
Leaf apex gradually acuminate or abruptly tapered and indistinctly mucronate ; winter bud scales early deciduous or some persistent at base of branch
葉頂端緩尖或急尖並且尖端模糊；冬天芽鱗片提早脫落或有一些仍殘留在枝條的基部。 -
It has leaf primordia and a shoot apex.
它有葉原基和一個苗端。 -
The second leaf takes place at the basal part of the first leaf and originates from the shoot apex cells when the first leaf pierces the calyptra
第一葉突出帽狀體之後，由第一葉基部保留下來的莖干頂端細胞產生第二葉。 -
Leaves basal ; petiole up to 3 cm ; leaf blade elliptic, 2 - 3 cm long and 1. 1 - 1. 9 cm wide, apex rounded, base cuneate, margin serrulate, white pilose on both surfaces
葉全部基生；葉片橢圓形，長2 - 3厘米，寬1 . 1 - 1 . 9厘米，先端圓形，基部楔形，邊緣具細齒，兩面被白色柔毛；葉柄長可達3厘米。 -
Effects of removal of the shoot apex and leaf wounding on nitrogen uptake and nicotine production were studied with tobacco plants grown in sand or hydroponic medium under the controlled conditions
摘要採用砂培和營養液培養方法，研究了在營養生長階段切除頂芽和葉片損傷對煙株生長、體內煙堿濃度、氮濃度及吸氮量的影響。 -
Low growing perennial with creeping stolons ; leaf light green, rolled in bud ; leaf blade long - lanceolate to linear, apex acute, inflorescence a short, open panicle, somewhat contracted
本種為多年生，矮生性，具匍匐莖；葉淡綠色，在芽期時卷生；葉片條狀，先端尖；花序為一短小，開展而稍扁壓的圓錐花序。 -
7 - 10 days " seedlings after the seeds germinated, the meristem in the stem apex functioned to form true leaf primordium, meanwhile, the vessel elements which differentiated from parenchymatous cells of the middle and upper portion of the cnz connected with the vessel elements from procambium of epcotyl - shoot region
種子萌發7 - 10天，幼苗的莖端分生組織活動形成真葉雛形，此時由子葉節區中、上部薄壁細胞的轉分化形成的導管分子與上胚軸-苗區原形層形成的導管分子發生連接。 -
The results showed that there are no significant difference within the stomatic distribution of outer epidermis of young and aged stem and aged leaf sheath in three plants ; but there are significant or very significant difference within apex, middle and base of young and aged leaves
結果表明：三種植物的幼莖、成熟莖和成熟葉鞘外表皮的上部、中部、基部的氣孔分佈均無顯著性差異，而幼葉和成熟葉的上、中、下部的氣孔分佈存在著顯著性差異或極顯著差異。 -
Careful observation of such leaf lamina shows that veins do branch and converge in places, especially near the base and apex of the blade
仔細的觀察表明葉脈在某些地方分支和聯合，尤其在葉片的頂端和基部。 -
However, the effects on nicotine production caused by leaf wounding were smaller than that caused by removing the shoot apex
但葉面損傷對煙株體內煙堿合成的影響小於打頂處理。 -
Removal of the shoot apex and leaf wounding did not show any influences on nitrogen uptake by plant, but increased nicotine production per unit nitrogen
切除頂芽和葉面損傷對煙株體內的氮濃度及吸氮量均無顯著影響，但顯著提高了煙株體內單位氮素產生煙堿的能力。
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