This has clearly demonstrated that high plant population is superior to the low.
这清楚地表明高种植密度优于低种植密度。
Currently, neither cloning S and Z gene nor identifying their products was successful. Phalaris coerulescens can be used as a model plant to study SI in the Poaceae. Segregating population and comparative genomics strategy were used to map S and Z, constructing high-resolution mapping of the target loci so that map base clone S and Z genes. It is a research orientation and hot spot of self-incompatibility in Poaceae.
目前S、Z基因的克隆和编码产物的鉴定均未有成功的报道，天蓝虉草可作为禾本自交不亲和性研究的一个模式作物，运用分离群体和比较基因组学方法构建S与Z位点的精细连锁图谱，以对自交不亲和基因进行图位克隆，是当前禾本科植物自交不亲和性研究的一个方向和热点。
The fact that the pink plants were predominant among the population of RP1 cross progeny hints that the pink had the strong descendiblity, Whereas another fact that the plants with the color of another parent were predominant among the population of R01 cross progeny indicates that the nacarat/saffron plant had the low descendiblity. The above results suggest that it is better to choose the pink plants with the target color flower of breeding as a parents when arranging the cross combination. Many novel flowers with singular value of view and admire can be bred by the different cross combination since the wide segregation chromatogram is not confined to the parents'.
以RPl及R01作母本或父本，分别与不同花色杂交，F1代发生了明显的花色分离，RP1的杂交后代均以粉色占优势，表明粉色的遗传力较强，R01的杂交后代均以其它亲本占优势，表明桔黄/桔红的遗传力较弱，因此在选配组合时，最好选择具有育种目标的粉色个体作为亲本；另外由于分离谱较广，且分离的色谱范围并不完全限于双亲之间，可根据不同的杂交配组，培育出具极高观赏价值的稀有花色。
He predicted that population growth would call wide spread harm to the plant.
他预言人口增长将对星球造成广泛的危害。
This paper analyzes a 100 MW power plant boiler separator water level measuring problems and their causes separator suggested a solution -- electric contact water level gauge, differential pressure measurement error balance containers great improvement, After the electric contact meter sampling of the population transformation, Pressure to revise and improve the signal level of compensation that logic and separator level protection logic, separator solution to the inaccurate measurement of water level, water level to reduce measurement error, separator level protection to the normal input, for the safe and economic operation of boilers provided a guarantee.
文章分析了某热电厂100MW 机组锅炉汽包水位测量存在的问题及其原因，提出了解决汽包电接点水位计、差压平衡容器测量误差大的改进方法，经过对电接点水位计取样口的改造，修改完善差压水位信号的补偿修正逻辑和汽包水位保护逻辑，解决汽包水位测量不准的问题，减少水位测量误差，使汽包水位保护能正常投入，为锅炉安全经济运行提供了保证。
The biomass growth rate of P. australis population was increased quickly a -t the first and then decreased. Its population has higher energy transformation efficienc -y and it belongs to the mid-high caloric power plant. Among these components, the re productive components have the highest dry weight caloric content.
芦苇群落生物量呈现明显的季节性变化，其地上部生物量最大值出现在8月份，地上生物量和地下生物量呈负相关关系，芦苇不同构件生物量生殖配置比以根茎为最高，芦苇种群生物量的增长速率在生长季节初始较快，然后呈下降趋势。
However, the AB sterile plant was still a separating population, there was still difference in the critical temperature of fertility conversion of individual in the population.
但是，贵引AB不育株还是一个分离群体，其个体间育性转换临界温度尚有差异。
Plant population varies from 1, 400 to 1, 600 plants per hectare and the plantation is kept in the field for several ratoons using suckers coming from the mother plant.
种植密度保持在1400株/公顷到1600株/公顷，种植园田地上留下母株的根出条所形成的截根苗。
After extensive survey of species of Takakia, we couldn't have found any individuals because of its limited population distribution, so we decided to add some relevant studies of conservation genetics to make up for the shortage of this project, including the analysis of effect of stand age and management regime on genetic diversity on Thuidium cymbifolium in Western China, and genetic structure of the endangered insular plant Neolitsea sericea on the Zhoushan archipelago. Results showed that the population of T.
藻苔类植物多分布于高山雪域地带，且范围极为有限，课题组经多次野外搜寻，未能采集到活体材料，而课题实施时间仅有1年，因此课题组同时积极开展云杉人工林林下大羽藓遗传多样性恢复的动态变化，以及岛屿地理隔离对濒危物种舟山新木姜子种群遗传结构的影响等研究，以弥补项目实施之不足。
The recombinant inbred line F(subscript 6:7) family came from F(subscript 2:3) genetic mapping population of Sorghum314A×Brown Sudan grass, to the traits of plant height and leaf number, the NILs were isolated separately based on the traits and the molecular markers.
利用高粱314A×棕壳苏丹草的F(下标 2：3)遗传作图群体的后代材料建立重组自交系群体F(下标 6：7)，对株高、叶片数2个性状，采用基于性状和基于分子标记的近等基因系分离法，分别找出差异显著的株系和杂合的株系。
The next rapid jump in population started perhaps 10, 000 years ago, when mankind began to keep herds, plow and plant the earth.
一旦最初的生产力增长被吸收殆尽，第二次人口剧增大约始于人类开始蓄畜，垦耕的 10，000 年前。
The second population consisted of the F5 family lines which were developed by few－seeds bulk selection method from each F2 plant of the cross between CM101, a waxy japonica rice variety, and IGRA409, an indica rice variety with w of 27.5%.
另一群体为CM101与IGRA409杂交F5家系，亲本CM101为一个粳型糯稻，Wx基因型为18/18；IGRA409为籼稻，w =27.5%，Wx基因型为11/11。
In this study, a rice tagged line with two copies of T-DNA segments inserted independently to each other was screened out via a series of verification tests, including the co-segregated analysis between the mutated character and the sequence of T-DNA or the genomic sequence flanking inserted T-DNA. From this tagged line, two inserted incidents were separated from the progeny population of a plant heterozygous in two tagged sites, and some plants with the target trait and one of the inserted incidents were obtained, which were important basic materials for the subsequently co-segregated analysis between the mutated character and the sequence of inserted T-DNA, and for cloning the mutant gene in future.
为了提高水稻插入突变体库的利用效率，结合水稻一个双拷贝T-DNA插入突变体的发现和鉴定研究，通过特异PCR检测、侧翼序列与目标性状的共分离分析，在1个双插入位点均为杂合的植株的后代株系中分拆了2个插入事件，分离出目标性状存在遗传分离且只带有1个插入事件的后代株系，为后续的共分离检测和基因克隆研究打下了重要的基础。
Ordosica biomass and density was dependant on that of soil moisture, and in particular, there existed a significant positive correlation between the biomass and the moisture, indicating that on semifixed dune, soil moisture played a decisive role in the spatial heterogeneity of plant population.
由于沙丘地形对降水量的再分配在土壤湿度分布中的作用，土壤湿度和油蒿种群空间异质性相互作用的结果为地形的缀块性→土壤湿度分布的缀块性→油蒿种群分布的缀块性→油蒿生物量和密度的缀块性。
In order to be efficient and profitable with a crop of plantain at high plant population it is necessary to take in account the following management recommendations.
为了获得较高的经济效益，在栽培密植大蕉时应考虑以下几种管理因素
In these experiments, attempt has been made to evaluate the effect of variables of green manuring, inorganic fertilization and plant population on maximizing crop yields.
这些试验试图评价绿肥品种、无机肥及群体密度对作物最高产量的作用。
Thus, flowering plant species dependent on insect pollination, as opposed to self-pollination or wind pollination, could be endangered when the population of insect-pollinators is depleted by the use of pesticides.
因此，依赖于昆虫授粉的开花类的植物，因为不同于自身授粉或风媒授粉，在花粉媒虫数量因杀虫剂的使用而减少时，会濒临灭绝的危险。
In this study, we selected waste coal pile in Mingshan as testing area. We tried to improve the physical and chemical character through adding pioneer plants and native plants, and accelerate the process of vegetation succession and ecological re-establishment. We also investigated growth patterns of plant population, optimal species, reasonable disposition and structure for plant population in order to provide the theoretic and practical basis for vegetation recovery and ecological re-establishment in Meizhou and other areas in South China.
本研究以明山矿区煤矸石山为研究区，通过添加先锋植物种和乡土植物，改良土壤理化性质，以期缩短植被演替进程，加快矸石山的生态重建进程，并对植物种群生长规律、适宜的植物种类、植物种群合理配置及结构等进行研究，为当地甚至南方煤矸石山植被恢复与生态重建提供理论与实践依据。
Resultant decreases in soil pH cause reduced, less-active population of soil microorganisms, which in turn slow decomposition of plant residues and cycling of essential plant nutrients.
土壤酸碱值的降低导致土壤中还原性、低活性微生物族群增加，逐渐减缓植物残留物的分解及植物重要营氧物的循环。
In the present study, large-scale genetic diversity and population structure of C. mollissima natural populations were investigated by using microsatellite markers. High level of genetic diversity had been observed in C. mollissima natural populations, and most of the total genetic variation occurred within rather than among the populations. Among the four sampling regions (central, eastern, southwestern and northwestern China), a higher level of genetic diversity was found in populations from central China, and the populations from southwestern China was found to be the lowest. Combining with previous research, it could be inferred that the Shennongjia and neighboring area was the modern center of the genetic diversity of C. mollissima. Gene flow model may have impact on population history of C. mollissima as gene flow-drift equilibrium test confirmed, but most pairwise differentiantion were significant, suggesting adaptive differentiation may occur in C. mollissima natural populations. Natural selection may play a more important role in the evolution of the plant. No significant association between genetic distance and geographic distance was detected by Mantel test. The UPGMA tree based on Nei`s unbiased genetic distance was not absolutely consistent with the geographical distribution of the populations, suggesting no significant genetic boundary exsited beween different geography regions. The delineation of ecological zones lacked molecular evidence.
本文采用微卫星分子标记，从大尺度地理格局对中国板栗自然居群的遗传多样性和遗传结构进行了分析，结果表明中国板栗自然居群具有丰富的微卫星遗传多样性，且遗传变异主要存在于居群内；华中地区的中国板栗自然居群的遗传多样性最高，其次为西北地区和华东地区，而西南地区遗传多样性最低，在综合前人研究的基础上，推测神农架及其周边地区为现代中国板栗的遗传多样性中心；基因流－漂变平衡检测结果表明基因流模型对居群历史产生了影响，然而大部分居群间的遗传分化均为显著，暗示中国板栗自然居群间可能存在适应性分化，自然选择作用对中国板栗群体遗传分化的影响可能比基因流作用的影响更明显；遗传距离与地理距离之间无显著相关性；UPGMA聚类分析结果与其地理分布格局并不吻合，说明不同地理区域的中国板栗自然居群间在遗传上并没有明显的界限，对中国板栗生态区的划分缺乏分子证据。