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     Molecular Markers for Lr37, Lr44 Based on AFLP and Detection of Wheat Leaf Rust Resistance Genes in 124 Wheat Cultivars (Lines)
     Lr37、Lr44AFLP分子标记及124个小麦品种(系)抗锈基因鉴定
短句来源
     Molecular Mechanism of Pathogenicity of Tomato Yellow Leaf Curl China Virus and Viral Satellite DNA Induced Gene Silencing
     中国番茄黄化曲病毒(TYLCCNV)致病分子机理及其卫星DNA诱导的基因沉默研究
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     Genetic Analysis and Fine Mapping Genes Associated with Leaf Rolling in Rice
     水稻卷性状的遗传分析及卷基因的精细定位
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     Isolation and Identification of Promoters from Tomato Yellow Leaf Curl China Virus and Its Associated Satellite DNA
     中国番茄黄化曲病毒(TYLCCNV)及其卫星DNA的启动子鉴定
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     Molecular Mechanism Involved in Gene Regulation of Leaf Curvature
     卷曲基因调控机制的研究
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  叶片
     Study on the Wheat Transformation with Leaf Senescence-Inhibition Gene P_(SAG12)-IPT
     叶片衰老抑制基因P_(SAG12)-ITP转化小麦的研究
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     Identification of Endopeptidase Isoenzymes and Degradation of Rubisco during Wheat Leaf Senescence
     小麦叶片衰老过程中内肽酶同工酶变化和特性及Rubisco降解的研究
短句来源
     Improvements on the Methods of Plant RNA Isolation and Northern Blot Analysis, and Effects of Plastid Signal on Nuclear Gene Expression as Well as Leaf Morphogenesis
     植物RNA分离与Northern杂交方法的改进及质体信号对核基因表达和叶片形态建成的影响
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     Responses of Sexual Reproduction Pattern and Leaf Traits of Arabidopsis Thaliana to Elevated CO_2
     拟南芥有性生殖模式和叶片特性对大气CO_2浓度变化的响应
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     STUDIES ON THE MECHANISM OF RETARDING LEAF SENESCENCE BY 6-BENZYLAMINOPURINE IN WHEAT SEEDLINGS
     6-苄氨基嘌呤延缓小麦叶片衰老机制的研究
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  叶的
     The results were as follows: 0 mm treatment had the lowest N, P, K content of +1 leaf, 60 mm treatment's was the highest, 40 mm treatment's was high, 20 mm treatment's was low.
     试验结果表明:0mm/旬处理+1叶的全N、全P、全K含量最低,60mm/旬处理的最高,40mm/旬处理的较高,20mm/旬处理的较低;
短句来源
     The regresion equations for biomass of the bole and leaf of Lespedeza formosana are log W_(bole)=1.64209+0.92413 log D~2H and log W_(leaf)=1.46161+0.72908 log D~2H, respectively.
     估测胡枝子杆和叶的生物量的回归方程分别是logW_杆=1.64209+0.92413logD~2H和logW_叶=1.46161+0.72908log D~2H。
短句来源
     The results show that water content was almost 500.1~521.7 g/kg of all tree in Rhus typhina artificial forest under different site types,water content of roots was almost 541.4~585.5 g/kg,water content of leaf was almost 548.3~591.7 g/kg,water content of stem was the lowest,almost 410.2~419.7 g/kg;
     结果表明,各立地类型火炬树全株平均含水率为500.1~521.7g/kg,根的平均含水率为541.4~585.5g/kg,叶的平均含水率为548.3~591.7g/kg,茎枝的平均含水率最低,为410.2~419.7g/kg;
短句来源
     ④ Average water rate of stem branch and leaf was 46.05% ,57.87% and 60.10%,respectively,the stem was the least and the leaf was the mostly.
     秆、枝、叶的平均含水率分别为46.05%、57.87%和60.10%,以秆最少,叶最多。
短句来源
     The essential oils yields : dry leaf (2.515±0.044)%, dry stem (0.205±0.018)% and dry whole plant (1.535±0.035)%.
     结果表明:石荠艹宁干叶的精油含量为(2.515±0.044)%,石荠艹宁干茎的精油含量为(0.205±0.018)%,石荠艹宁干全草的精油含量为(1.535±0.035)%.
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  “leaf”译为未确定词的双语例句
     Biological Polymorphism and Physiological Differentiation Mechanism of Cercospora Zeae-maydis in Gray Leaf Spot of Maize
     玉米灰斑病菌(Cercospora zeae-maydis)生物学多态性与生理分化机理研究
短句来源
     Research on the Calculation Model of Automobile Leaf Spring
     汽车钢板弹簧计算模型研究
短句来源
     The Research on Habitat Selection, Utilization and Feeding Biology of White-headed Leaf Monkey (Presbytis Leucocephalus)
     白头叶猴(Presbytis leucocephalus)对栖息地选择利用与觅食生物学
短句来源
     Primary Study on Molecular Mechanism Controlling Compound Leaf Development in Lotus Japonicus
     百脉根复叶发育分子机制的初步研究
短句来源
     Physiological Differentiation and Molecular Biology of Curvularia Lunata in Maize Leaf Spot
     玉米弯孢叶斑病菌生理分化及分子生物学研究
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  leaf
Berberine taken for the cytotoxic evaluatin was obtained through cell suspension cultures established from young green leaf segments.
      
Bean plants were necrotic and chlorotic, with leaf malformations, following 10-2 M treatments.
      
Results indicated that the leaf area, stem and leaf biomass, and caliper of seedlings of all four poplar clones increased with the decrease in cutting density.
      
Leaf area index reached its highest level at the spacing of 40 cm×40 cm, while the aboveground biomass of the seedling on an area basis increased as the cutting density increased.
      
SOD and POD activities declined correspondingly, followed by significant increases of MDA and MP, and leaf injury was finally observed.
      
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A.The Soils Since the goological formation of this mountainous area is quite uniform,a vertical distribution of soils is obviously observed. At the top of the mountain with an elevation of 8,500 feet,the podzolic soil is found. The process of podzolization is clearly shown by the translocation of clays,organic matter, and active aluminum from an upper to lower layer.The gray brown podzolic soil is distributed in areas ranging from 7,000 to 8,500 feet in elevation.It is developed under forest and has a...

A.The Soils Since the goological formation of this mountainous area is quite uniform,a vertical distribution of soils is obviously observed. At the top of the mountain with an elevation of 8,500 feet,the podzolic soil is found. The process of podzolization is clearly shown by the translocation of clays,organic matter, and active aluminum from an upper to lower layer.The gray brown podzolic soil is distributed in areas ranging from 7,000 to 8,500 feet in elevation.It is developed under forest and has a surface covering of leaf litter and a surface soil with high content of organic matter.In places at an elevatin from 3,900 to 7,000 feet the yellow podzolic soil is dominant.At an elevation below 3,000 foot the red podzolic soil and the sketetal soil are fonnd. The analytical data of the soils of this area may be summarized as follows: 1.pH values of the soils:In the whole area,since the parent rock (gneiss) is poor in basic constituents,soils are all acid in reaction.The pH of the different horizons of the soils ranges from 4.0 to 5.5.The A_0 and A_1 horizons are usually less acid than B horizon,the A and B horizons are much more acid than the parent rock.This shows the leaching process of the soils under such a humid atmosphere. 2.Organic Matter of the soils:The organic matter content of the soils in this area is greatlg influenced by the kind of the vegetation cover.At an elevation of 8,500 feet, the soil developed under forest has 38.92% of organic matter in the A_1,while that under grass has only 11.08% of organic matter in the corresponding horizon.However as the vegetation cover is constant,the dopth of the A_1 and its organic matter content are evidently affected by the elevation.At an elevation of 3,000 feet,the A_1 horizon of the red podzolic soil is only 1 cm.in depth,and it has 3.37% of organic matter.At an elevation of 8,500 feet,howerver,the A_1 horizon of the podzolic soil is 7 cm.in depth, and it has 11.08% of organic matter.In addition,deposition of organic matter in the B horizon is clearly found in the podzolic soil,but it has not been seen in soils found at lower elevation. 3.Active aluminum of the soils:All the soils in this area are high in active aluminum. They contain from 20 to 16 p.p.m.of active aluminum.The content of active aluminum in the different horizons of the same profile has a very close relationship with the pH values of the corresponding horizon.The less acid the reaction the smaller is the amount of acitve aluminum.The active aluminum of the soil is usually higher in amount than that of the parent rock from which the soil is derived. 4.Available calcium magnesium,and potassium of the soils:All the soils are general- ly low in available calcium,magnesium,and potassium.The comparatively high content of these elements in the A horizon is derived from the leaves of the vegetation which are grown on that soil. 5.Available phosphorus of the soils:All the soils of this area are low in available phosphorus. 6.Available nitrate:All soils in this area are very low in nitrate. B.The Vegetation 1.The plants growing on soils of this area are most calcifuge species which are acid- loving (Vaughan and Wishe,1937).As far as the chemical analysis of the soil is concer- ned,those species may be assumed as not only acid-loving,buy also active aluminum- loving (Hutchinson,1943). 2.The distribution of the calcifuge plants In this area is apparently affected by the local climate in terms of elevation.Some of them (temperate plants) are confined to high elevation,others(tropical plants) being limited to low elevation,Two groups of the plants may be given as follows.Many of them are of the same species as those found in southwestern China (Hou,1944). (a) Plants mainly ocurring in areas at elevations from 7,000 to 8,500 foot (temperate plants): Pteridophyta: Destaedtia Scabra (Wall.) Moore Diranopteris linearis Under. Hicrioptris glauea Under. Hymenophyllum crispatum Wall. Hymenophyllum exsertum Wall. Lidsaya cultrata Sw. Lycopodium clavatum L. Plagiogyria pyphylla (Kunze) Mett. Pteridium aquilinum Wightianum Trym Pteris aspericaulis Wall. Flowering Plants: Castanopsis tribuloides A.DC. Lindera pulcherrima Bth. Osbeckia crinata Bth. Rhododendron arboreum Sm. Rhododendron grande Wight Pieris formosana D.Don Vaccinium refersceda HK. Vaccinium serrasum Wight (b) Plants mainly ocurring in areas at elevation from 1,000 to 3,000 feet (tropical plants): Pteridophyta: Adiantum philippense L. Blechnum orientale L. Aglaoorpha coronaus Copel Lycopodium cernum L. Nephrolepsis cordifolia Presl Tectaria spp. Polypodium ucidum Roxb. Flowering plants: Oxyspora paniculate DC. Themeda arundinacea Ridl.

1945年10月中旬,作者留印三月另一周,曾作三次野外调查,计包括印缅边区、恒河平原及喜马拉雅山东南麓等三区,茲先将大吉岭区调查结果,草成此文。调查区域大吉岭位于喜马拉雅山东南麓,在我国西藏边境,全区是山地,海拔自1000到9000尺不等,主为酸性的片麻岩地层,在拔海6500尺地点,年平均气温为56.3℉.,年雨量为122寸。土壤灰壤——灰棕壤组合:在拔海8500尺左右的山顶,灰壤见于草地上,而灰棕壤则发育在森林之下。灰棕壤——灰化黄壤组合:在拔海7000—8000尺地带,森林下仍是灰棕壤,而草地上则为灰化黄壤。灰化黄壤——粗骨土组合:在拔海1000—3000尺地带,片麻岩生成灰化红壤,酸性砂岩生成砾质土。全区土壤特征可归纳如下: (1)土壤 pH 值:全区因土壤母质为酸性片麻岩,各类土壤剖面亦为酸性反应;pH 值约自4.0至5.5。A_1层之 pH 值恒较 B 层为大,而土壤剖面内之 A 层及 B 层均较母岩之酸度为高。 (2)土壤有机质:从土壤有机质分析结果观之,显示植物种类对于土壤有机质之含量高低,有密切的关系,在拔海8500尺之地带,发育于森林下的灰棕壤,表土含有机质38.92%,而同处草类和蕨类植物...

1945年10月中旬,作者留印三月另一周,曾作三次野外调查,计包括印缅边区、恒河平原及喜马拉雅山东南麓等三区,茲先将大吉岭区调查结果,草成此文。调查区域大吉岭位于喜马拉雅山东南麓,在我国西藏边境,全区是山地,海拔自1000到9000尺不等,主为酸性的片麻岩地层,在拔海6500尺地点,年平均气温为56.3℉.,年雨量为122寸。土壤灰壤——灰棕壤组合:在拔海8500尺左右的山顶,灰壤见于草地上,而灰棕壤则发育在森林之下。灰棕壤——灰化黄壤组合:在拔海7000—8000尺地带,森林下仍是灰棕壤,而草地上则为灰化黄壤。灰化黄壤——粗骨土组合:在拔海1000—3000尺地带,片麻岩生成灰化红壤,酸性砂岩生成砾质土。全区土壤特征可归纳如下: (1)土壤 pH 值:全区因土壤母质为酸性片麻岩,各类土壤剖面亦为酸性反应;pH 值约自4.0至5.5。A_1层之 pH 值恒较 B 层为大,而土壤剖面内之 A 层及 B 层均较母岩之酸度为高。 (2)土壤有机质:从土壤有机质分析结果观之,显示植物种类对于土壤有机质之含量高低,有密切的关系,在拔海8500尺之地带,发育于森林下的灰棕壤,表土含有机质38.92%,而同处草类和蕨类植物发育下的灰壤的表土,仅含有机质11.08%,但在相同的植物环境下,拔海高度或局部气候,也是支配土壤有机质含量的重要因素,例如在拔海3000尺地带,长有草类的灰化红壤,仅有极薄之有机质层,该层有机质含量为3.37%,而在拔海8500尺地带,长有草类的灰壤,则有较厚层有机质,其含量为11.08%。 (3)可溶性铝质:全区土壤含有高量可溶性铝,大约自20至160 p.p.m.,其含量与 pH 值高低相关,土壤 pH 值愈酸,可溶性铝含量就愈高。 (4)可溶性钙镁及钾质:全区土壤之可溶性钙,镁及钾等之含量均较低,但就同一土壤剖面而言,富于有机质的 A。或 A_1层的钙镁和钾质,常较 B 层为高,此点显示此等成份是来自植物遗体,亦即指示土壤中有机质与肥力之关系。 (5)全区土壤有效磷含量均甚低。 (6)全区土壤硝酸态氮之含量均极低,并有下淋现象。植物本文所论植物,仅以作者所采集而经各专家鉴定为限,其中以蕨类植物为主。本区的土壤都是酸性反应,所见的植物是以嫌钙性者为主,这些嫌钙性植物与拔海高度的关系很显著,兹将常见的植物种类,叙述如下: (一)主分布于拔海7000—8500尺地带的植物: 蕨类植物 Dennstaedtia scabra(Wall.)Moore Dicranopteris linearis Under. Hicriopteris glauca Under. Hymenophyllum crispatum Wall. Hymenophyllum exsertum Wall. Lindsaya cultrata Sw. Lycopodium clavatum L. Plagiogyria pycniphylla(Kunze)Mett. Pteridium aquilinum Wightianum Trym. Pteris aspericaulis Wall.种子植物 Castanopsis tribuloides A.DC. Lindera pulcherrima Bth. Osbeckia crinata Bth. Rhododendron arboreum Sm. Rhododendron grande Wight Pieris formosana D.Don Vaccinium referesceda HK. Vaccinium Serrasm Wight(二)主分布于1000—3000尺地带的植物: 蕨类植物Adiantum philippense L.Blechnum orientale L.Aglaomorpha coron(?)us copelLycopodium cernuum L.Nephrolepsis cordifolia PresslTectaria spp.Polypodium lucidum Roxb.种子植物Oxysoira paniculata DC.Themedra arundinacea Ridl.

The injurious insects of cotton of this province, however, have not hithertobeen carefully studied, especially the pink bollworm, which annually reducesthe cotton production by 10 to 30 per cent. The present authors spent twoyears in observing the life history and habits of this insect, in attempting tofind some effective control measures. The result is herewith summarized :- 1. In the vicinity of Wu-chang, the pink bollworm has three generationsa year. The first generation occupies May and July. The second...

The injurious insects of cotton of this province, however, have not hithertobeen carefully studied, especially the pink bollworm, which annually reducesthe cotton production by 10 to 30 per cent. The present authors spent twoyears in observing the life history and habits of this insect, in attempting tofind some effective control measures. The result is herewith summarized :- 1. In the vicinity of Wu-chang, the pink bollworm has three generationsa year. The first generation occupies May and July. The second one occursin mid-July and the last in late-August. Due to the lower temperature, theemergence of the first generation need about two months. 2. In day time, the adult is usually inactive, while in windless night,after seven o'clock, it becomes very active and lays eggs mostly on green bollsand calyx. about a week later, the eggs hatch and the newly-hatched larvaeare shortly getting into the bolls. After four days they often eat into theseeds. Ten days later, the lint is so stunted as to become dusky yellow incolor, thus both the yield and the quality of cotton are greatly lowered. Themature larvae appear about half a month after. 3. Field experiments have shown that three dustings of 10% DDT- sulfurpowder were very effective. In the severely damaged cotton area, the thirdspray may be simultaneously done with controlling the cotton leaf-hoppers andthe cotton leaf-rollers. 4. About 84% hibernating larvae in cotton seeds will come out when thecotton exposed in sun light and stored in the farmer's house. Hence it seemsadvisable to put cloth or other soft material covers on the cotton stored inorder to collect and kill the larvae under them. In addition, destruction of allremaining bolls on the cotton stalks, as early as possible in winter is important. 5. For controlling the bollworms in cotton store-houses, the followingresults have been obtained 50% wettable DDT diluted with 20 parts of water,91% of larvae were killed within 30 days; 6.5% 666 (benzene hexachloride)gave a mortality of 63% in four months. Wettable 6.5% 666 diluted withwater (1:100), has been proved to be the most effective ovicide which destroys99.4% of eggs while parathion (E605) also gave a very high mortality at97.7%. But 50% wettable DDT (1:100) Kills eggs at 64.2% and lead arsena-te only 16.2% respectively. 6. There were 39.1% overwintering larvae parasitized by parasitic mitesand wasps. Among them, most are the mite, Pediculoides ventricosus Newport,while the parasitic wasps Eurypterna arakawae Mats. less than 0.5%.

红铃虫在南方棉区为害棉花相当严重,除去脱落蕾铃外,僵黄花率为10—30%,我们针对这个严重问题,进行了红铃虫生活史的观察研究与防治方法试验,写出初步结果,提供防治参考。 1.红铃虫在华中武昌棉区一年有三代。第一代羽化在5至6月,7月中旬为第二代;8月下旬为第三代;第一代的蛹和幼虫所需时期均较第二、三代长。 2.成虫白天不活动,夜晚7时以后无风天气活跃最盛,产卵以在青铃上及花萼上为最多。孵化后三十多分钟即钻入棉桃内为害,4天即侵入棉籽内取食,10天棉瓤纤维呈僵黄状,半月后幼虫即可老熟(第三代的)。 3.田间防治红铃虫以10%滴滴涕硫磺粉喷三次效果显著,在后期棉虫严重地区可结合防治叶跳虫卷叶虫等同时进行。 4.籽花内的幼虫在群众家里及晒花时逃出84%,因此指导群众将籽花堆上加覆盖物,再结合帘架晒花是消减过冬红铃虫最经济有效的办法。 4.防治仓库越冬红铃虫以50%可混性滴滴涕1:30倍水溶液杀虫效果最佳。30天内死亡率达91%.6.5%可混性666(1:20)死亡率为63%。但是1:100倍的水溶液杀卵效率高到99.4%。稀释万分之一的E605为97.7%。50%可混性滴滴涕1:100杀卵率为64.2%,砒酸铃最差...

红铃虫在南方棉区为害棉花相当严重,除去脱落蕾铃外,僵黄花率为10—30%,我们针对这个严重问题,进行了红铃虫生活史的观察研究与防治方法试验,写出初步结果,提供防治参考。 1.红铃虫在华中武昌棉区一年有三代。第一代羽化在5至6月,7月中旬为第二代;8月下旬为第三代;第一代的蛹和幼虫所需时期均较第二、三代长。 2.成虫白天不活动,夜晚7时以后无风天气活跃最盛,产卵以在青铃上及花萼上为最多。孵化后三十多分钟即钻入棉桃内为害,4天即侵入棉籽内取食,10天棉瓤纤维呈僵黄状,半月后幼虫即可老熟(第三代的)。 3.田间防治红铃虫以10%滴滴涕硫磺粉喷三次效果显著,在后期棉虫严重地区可结合防治叶跳虫卷叶虫等同时进行。 4.籽花内的幼虫在群众家里及晒花时逃出84%,因此指导群众将籽花堆上加覆盖物,再结合帘架晒花是消减过冬红铃虫最经济有效的办法。 4.防治仓库越冬红铃虫以50%可混性滴滴涕1:30倍水溶液杀虫效果最佳。30天内死亡率达91%.6.5%可混性666(1:20)死亡率为63%。但是1:100倍的水溶液杀卵效率高到99.4%。稀释万分之一的E605为97.7%。50%可混性滴滴涕1:100杀卵率为64.2%,砒酸铃最差为16.2%。 6.越冬幼虫被寄生的平均有39.1%,发现天敌有二种,其中绝大多数是榖痒螨(Pediculoides ventricosus

The oxalate and calcium contents of 16 different eatables were determined. In spinach the oxalate was found principally in the leaves, being about 4 times that of the stem and 12 times that of the root. Pomegranate had a high content of oxalate and a very low content of calcium. Red amaranth and green tea (dry) were also high in oxalate but both had a much higher content of cakium than spinach. The previously reported high oxahte contents of bamboo shoots and water bamboo were confirmed. Ordinary boiling...

The oxalate and calcium contents of 16 different eatables were determined. In spinach the oxalate was found principally in the leaves, being about 4 times that of the stem and 12 times that of the root. Pomegranate had a high content of oxalate and a very low content of calcium. Red amaranth and green tea (dry) were also high in oxalate but both had a much higher content of cakium than spinach. The previously reported high oxahte contents of bamboo shoots and water bamboo were confirmed. Ordinary boiling method did not influence the oxalate content and the calcium content of the 4 vegetables studied. But in proportion more oxalate remained in the soup than in the cooked vegetable, while less calcium remained in soup than in the cooked vegetable. Ordinary method of frying of the 4 different vegetables caused a loss of about 12%(averaged value) of the oxalate with no change in calcium content: High-temperature short-time frying in oil (320℃) caused a loss of 22% of oxalate in spinach.

菠荣中草酸的分佈,極大部分存在葉內,其含量比莖約高4倍,比根約高12倍。 紅莧菜(水分89%)及龍井綠茶(水分8.2%)的草酸含量,約舆菠菜(水分89.5%)相等,但鈣量則比菠菜約多3—4倍。薺菜和苜蓿含鈣甚高而草酸很低。石榴含草酸特高而鈣極低。其他水果如熟柿子、袖子、橘子、香蕉、蘋果合草酸均少。普通煑法對於所分析四種蔬菜中的草酸及鈣含量,無甚改變。草酸在菜湯中均比熟菜多,而鈣在菜湯內均比熟菜少。以上四種蔬菜經炒過後,對於鈣量並無影響,但草酸有顯著的減低,平均約損失12%左右。

 
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