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kernel sink
相关语句
  籽粒库
     ADVANCES OF PHYSIOLOGICAL CHARACTERS STUDIES ABOUT LEAF SOURCE AND KERNEL SINK ON CULTIVARS IN MAIZE
     我国玉米品种叶源和籽粒库等生理特性研究进展
短句来源
     Some physiological characteristics of photosynthetic resource, nutrient transport and kernel sink formation of 11 wheat cultivars (Triticum aestivum L.)
     应用植物生理生化技术、生物电子显微技术、同位素示踪技术和多元统计分析等方法,全面研究了不同粒重、穗型和株高的11个小麦品种(系)在光合源、养分运输和籽粒库形成等方面的生理特性;
短句来源
     But the moderate drought treatment could promote the activities of acid invertase,sucrose synthetase,and alkaline invertase,and these resulted in the transportation and partition of more photoassimilates into the kernel sink.
     但中度干旱会提高籽粒中酸性转化酶、蔗糖合成酶、碱性转化酶的活性,有利于同化物向籽粒库转运分配;
短句来源
     Severe drought could lower the metabolic activities in the kernels,and it was no good to the transportation and partition of photoassimilates into the kernel sink.
     而严重干旱会降低籽粒的代谢活性,不利于同化物向籽粒库转运分配。
短句来源
  “kernel sink”译为未确定词的双语例句
     Effect of Nitrogen on the Kernel Sink Development in Summer Maize (Zea Mays L.)
     氮肥对夏玉米籽粒库容建成和充实的影响机理
短句来源
     The decrease of kernel abortion is due to increased kernel sink capacity, higher activities of both soluble and insoluble invertase, lower accumulation of reduced sugar in the endosperm, and greater assimilate utilization for starch synthesis.
     研究表明:氮素作为同化物直接参与玉米籽粒中蛋白质的合成,同时氮素也提高了蔗糖转化酶的活性,减少还原糖的积累,促进淀粉粒的形成,从而提高籽粒的库容、减少玉米籽粒的败育。
短句来源
  相似匹配句对
     kernel technology?
     NET的实质和一些核心技术、.
短句来源
     Effect of Nitrogen on the Kernel Sink Development in Summer Maize (Zea Mays L.)
     氮肥对夏玉米籽粒库容建成和充实的影响机理
短句来源
     The Effect of Altering Source-sink Ratio on Kernel Quality and Leaf Senescence in Peanut
     改变源-库比对花生籽仁品质和叶片衰老的影响
短句来源
     Its kernel is ecology of mankind.
     组成了一个极为庞杂而又巨大的,以人类生态为核心的耗散结构体系。
短句来源
     Planar heat sink
     平面热沉
短句来源
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In 1993-1994, the experiments were carried out in Shihezi, Xinjiang(N44° 37'); Daxin, Beijing (N40°); Jinan, Shandong (N36°42'); Yangzhou, Jiangsu (N32°)with corn cultivars Yidan13 with more silks and LuyunlO with less silks. With different densities and fertilizer levels cultivating different populations and in a high yield population being treated with foliage and ear shoots removals at silking stage, the relationship of the source and sink with the grain yield was analysed. The results shown that, there...

In 1993-1994, the experiments were carried out in Shihezi, Xinjiang(N44° 37'); Daxin, Beijing (N40°); Jinan, Shandong (N36°42'); Yangzhou, Jiangsu (N32°)with corn cultivars Yidan13 with more silks and LuyunlO with less silks. With different densities and fertilizer levels cultivating different populations and in a high yield population being treated with foliage and ear shoots removals at silking stage, the relationship of the source and sink with the grain yield was analysed. The results shown that, there were significant differance of the grain yield in different experiment sites, but at any experiment site the grain yield increase had significant positive correlation with the dry matter accumulation during grain filling period (source) and the total kernels (sink). It was also shown that the sink was more important for grain yield than the source, special for the cultivar with less sink.

1993~1994年在新疆石河子、北京大兴、山东济南、江苏扬州对多花品种掖单13和中花品种鲁玉10进行春播试验,采用高产群体剪叶剪穗,不同密肥培植大小不同群体研究了玉米群体主要源库指标与产量的关系。结果表明:尽管玉米产量因试点经纬度及生态条件的差异很大,但不同试点的玉米产量水平均随花后干物质积累量(源)、总粒数(库)的增加而增加,源库相互促进增产。但增源增产与增库增产比,增库增产更为重要。这方面花数少库容潜力小的品种比花数多库容潜力大的品种更为突出。

There has been a phenomenon in wheat production of attaching importanc e to nitrogen fertilizer but ignoring potassium fertilizer. Employing nitrogen f ertilizer solely results in excessively growing, soft stemmed, wheat, leading to a reduction in kernel yield. Also, the soil hardens and the environment is dest royed. As one of the indispensable elements, potassium has become an important l imiting factor in wheat kernel yield increasing. This article studied the effect of potassium on photosynthetic rate,...

There has been a phenomenon in wheat production of attaching importanc e to nitrogen fertilizer but ignoring potassium fertilizer. Employing nitrogen f ertilizer solely results in excessively growing, soft stemmed, wheat, leading to a reduction in kernel yield. Also, the soil hardens and the environment is dest royed. As one of the indispensable elements, potassium has become an important l imiting factor in wheat kernel yield increasing. This article studied the effect of potassium on photosynthetic rate, sucrose content, activity of sucrose_phosp hate synthase (SPS)-the key enzyme in sucrose synthesis-in flag leaves, and on the sucrose content, activity of sucrose synthase (SS) (the key enzyme in suc rose decomposition), activity of adenosine diphosphorate glucose pyrophrylase (A DPGPPase) (the key enzyme in starch formation), and starch accumulation rate of kernels of wheat. The study was carried out in 1999 on an experimental farm of S handong Agricultural University, Taian, China, using the variety `Lumai 22' whic h has high yield potential. The experiment set three potassium treatments (K 0, K 1 and K 2); the potassium amounts supplied were 0 kg K 2O, 168.75 kg K 2O, 225.00 kg K 2O per hm 2 respectively, using KCl as the potassium fertilizer. E ach treatment had three replicates. The plot area was 2 m×6 m=12 m 2, with sowing on October 11 i n 1999. The basic seedling number was 120 per m 2. Single stems flowering on t he same day were selected and marked using hanging cards during the anthesis perio d. These marked stems were used as the sample. The results suggest that potassiu m can prolong the peak period of photosynthetic rate, increase the supply of pho tosynthetic products in flag leaves, improve the activity of SPS after anthesis, accelerate sucrose synthesis during the early and middle periods of kernel fill ing in flag leaves, and increase sucrose content in flag leaves. Potassium also enhanced the supply of sucrose in the kernel during kernel filling, increased th e activity of SS which favors sucrose decomposition in the kernel, and produces sufficient precursor for starch synthesis; improved the activity of ADPGPPase wh ich favors starch formation; accelerated the rate of starch accumulation during the peak period of starch synthesis, and finally increased spike number, kernel weight and yield in wheat. Among the three treatments, each index had the greate st value in the K 1 treatment. So the K 1 treatment produced the highest kerne l yield. The physiological effects of potassium on yield in wheat were discussed from two points of view, namely, from the point of photosynthetic product supplying inte nsity in flag leaves and precursor supplying intensity in kernel sink, concentra ting on key enzymes. It was considered that potassium could increase kernel weig ht and yield by increasing the activity of SPS in the flag leaf and increasing t he activities of SS and ADPGPPase in the kernel, but the physiological and bioch emical mechanisms underlying this action should be investigated further. Further more, this article also discussed the reason why the K 1 treatment is superior to the K 2 treatment. It is possible that root absorption of K + and NO - 3 N are inter_related, and so an excessive K + concentration could affect the abso rption of NO - 3 N in the root. This would result in an effect on nitrogen absorption and transportation throughout the wheat plant, causing a reduction in wheat yield. The physiological mechanisms behind this effect require further study.

利用冬小麦品种‘鲁麦 2 2’(Triticumaestivumcv .‘Lumai 2 2’)在大田条件下研究了钾素对小麦旗叶蔗糖和籽粒淀粉积累及其有关酶活性的影响。结果表明 ,钾素有利于提高旗叶光合速率 ,增强开花后旗叶磷酸蔗糖合成酶活性 ,提高旗叶中蔗糖的含量 ;从而提高了灌浆期间籽粒中蔗糖的供应 ,增强了籽粒中蔗糖合成酶和腺苷二磷酸葡萄糖焦磷酸化酶的活性 ,加速了淀粉积累速率 ,提高了粒重和产量

The objective of this work is to determine whether the kernel abortion induced by nitrogendeficient is the direct result of N supply to the ear or the indirect result of limitation in photoassimilates. We steminfuse nitrogendeficient and nitrogensufficient plants, respectively, to provide additional sucrose, N, or similar amounts of both (N+sucrose). The nitrogendeficient plants are also steminfused with 15Nglycine and soil treatment of 15NNO3. Experimental results indicate that N plays a...

The objective of this work is to determine whether the kernel abortion induced by nitrogendeficient is the direct result of N supply to the ear or the indirect result of limitation in photoassimilates. We steminfuse nitrogendeficient and nitrogensufficient plants, respectively, to provide additional sucrose, N, or similar amounts of both (N+sucrose). The nitrogendeficient plants are also steminfused with 15Nglycine and soil treatment of 15NNO3. Experimental results indicate that N plays a role of direct nutritional enhancement and an indirect enzyme effect on kernel development. The decrease of kernel abortion is due to increased kernel sink capacity, higher activities of both soluble and insoluble invertase, lower accumulation of reduced sugar in the endosperm, and greater assimilate utilization for starch synthesis.

本研究的任务在于确定氮素对缺氮所引发的玉米籽粒败育的影响:是直接地由于叶面氮素的供给,还是间接地由于光合作用不足。我们利用茎注液技术,分别注入氮素和蔗糖,以及氮素和蔗糖混合溶液,并利用15氮进行跟踪,分析氮素和糖份对玉米籽粒败育的影响。研究表明:氮素作为同化物直接参与玉米籽粒中蛋白质的合成,同时氮素也提高了蔗糖转化酶的活性,减少还原糖的积累,促进淀粉粒的形成,从而提高籽粒的库容、减少玉米籽粒的败育。

 
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