品种

The dressing percentage, the chet and leg muscle percentage, the weiht of chest muscle the percentage of leg muscle, the net meat per- centage contrasted no significance with the same age and the same sex of these two chick...

各品种内500日龄的净肉率极显著高于90日龄；肌肉中蛋白质，脂肪含量也是500日龄母鸡高于90日龄同品种的公母鸡，而含水量则下降。谷氨酸的含量，武定鸡的公母分别是18.23％，17.23％；茶花鸡的公母是17.43％，19.07％；已报道的太和鸡是18.31％，17.65％，三者极为近似。赖氨酸武定鸡胸、腿肌分别为9.33％，9.45％；茶花鸡为8.94％，9.41％；太和鸡为8.84％，9.08％；武定高于太和鸡和茶花鸡。

A set of maize inbreds or cultivars were firstly screened as GLS(Cercospora zeae-maydis)pathogen differential hosts with genetic background which current cultivars shared in China,such as inbreds Shen137,78599-1,Mo17,748,C8605-2,E28,598,Va35,K12 were identified as major ones,and cultivars Shenshi29, Shenshi31,Tiedan9,Yedan13,Dan413,Danyu18,Shennong87,Dongdan54 as affiliated ones.

从我国玉米品种资源中首次成功筛选出9个具有广泛血缘代表性的自交系，即沈137，78599-1，Mo17，478，C8605-2，E28，598，Va35，K12，作为玉米灰斑病菌的生理分化鉴别寄主；8个主栽品种，即沈试29，沈试31，铁单9，掖单13，丹413，丹玉18，沈农87，东单54，作为辅助鉴别寄主，从而确定了玉米灰斑病菌生理分化鉴别寄主体系。

olatiles of different Chaenomeles sinensis cultivars in Shandong Province were investigated by means of HS-SPME coupled to GC/MS,and fruit aroma of different cultivars was studied.

中文摘要：用固相微萃取—气相色谱/质谱联用技术测定了山东省主栽光皮木瓜品种的挥发性物质，并对不同品种果实的香气成分进行了探讨。

Ethyl alcohol and-2,4-Decadienal were the primary volaties. Some unique and high relative content volatives, playing an important role in the formation of specific aroma of different Chaenomeles sinensis cultivars, were detected from most cultivars.

乙醇和-2，4-癸二烯醛等化合物是光皮木瓜果实内最主要的挥发性物质，绝大多数品种内还含有自己独特的且相对含量较高的挥发性物质，这对构成不同品种光皮木瓜特异香气起到重要作用。

ITS2 and M8 DNA sequences with large variations were screened out of twelve DNA fragments (four nuclear, four chloroplastic and four mitochondrial) to identify tea varieties in Taiwan.

本研究由4个细胞核及8个细胞质（含4个叶绿体及4个粒线体）序列变异较大之片段筛选出具较大序列变异性之ITS2及M8片段，目前开发出ITS2序列与粒线体部分序列，其中品种间ITS2具有33个单一核苷酸多型性，而品种间之M8具有5个核苷酸缺失/插入及2个单一核苷酸多型性。

Several varieties of tomato with different degrees of resistance to cladosporium fulvum were used to study the changes in phenylalanine ammonia lyase activity and lignin conten as well as their correlationship with the resistance degree of varieties and pathogeny during inoculation.

以含对叶霉病不同抗性基因的番茄品种为材料，研究了叶霉病菌侵染过程中PAL酶活性和次生代谢物木质素含量的变化与品种抗性、病原菌生理小种间的相互关系。

The best relative effect of cross-protection was found when spore concentration of Cladosporium cucumerinum was adjusted to 1×10^2 spores/ml for 48 h interval. And it was much better in resistant cultivars than in susceptible ones. Meanwhile, after challenged by Corynespora cassiicola the cucumber induced by Colletotrichum orbiculare produced great resistance to brown-spot, but that increased the development of anthracnose.

在黑星病菌对霜霉病菌的诱导作用中，以浓度为1×10^2个／ml的黑星病菌孢子悬浮液的诱导效果最好，诱导间隔期为48h黄瓜黑星病菌对霜霉病的交互保护作用最明显，抗性品种的交互保护作用明显好于感病品种；炭疽病菌可诱导黄瓜有效抑制褐斑病的发生，但挑战接种褐斑病菌后，却促进了炭疽病的发生。

The variation rates of four wheat lines were 2%~3%. The characters of SP1 variation plants at maturity stage also appeared big changes. SP1 variation plants had short growing period, high seed setting rate, loose plant-type and clavated spike-type. There were not consistent change in plant height, the number of spike grain and the weight of 1000 kernel among four lines.

四个小麦品种SP1代变异株率为2％～3％；成熟期SP1代变异株性状也有较大变化，表现为生育期显著缩短，结实率有所提高，株型向松散趋势发展，穗型则均表现为棍棒形，株高、穗粒数和千粒重的变化品种间表现不一致。

Results showed that mycelial growth and conidial formation of Podosphaera xanthii were inhibited on resistant pumpkin cultivars.

因此，在筛选抗白粉病的南瓜品种时，可以把接种后POD和PPO酶活激发与否作为鉴别是否为抗病品种的依据之一。

Our research indicated that from flowering to harvest stage of wheat,the photosynthetic rate,chlorophyll contents,soluble protein contents and conversive efficiency of light energy in L14 wheat leaves apparently declined more quickly than that in wheat variety 935031,but the beginning time when respectively relevant parameter declined was different.

结果表明：自开花至成熟期，鲁麦L14小麦叶片光合速率、叶绿素含量、可溶性蛋白含量及光能转化效率的下降速度均明显快于小麦品种935031，但是各相关参数降低的起始时间不同，自开花后30 d鲁麦L14的叶片已经开始干枯，而935031小麦品种到成熟时大部分叶片还保持绿色，说明小麦叶片早衰与光合能力的下降有密切关系。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷