子叶

The main results are as follows: 1.Through the solvent contrast test and the single-factor tests ensure that the best extraction solvent and the relevant factors effect on extraction rate.Orthogonal tests are use to assure the optimal method of extracting phenol compounds from Pistacia vera L .

主要结果如下： 1、通过溶剂对比试验及单因素试验确定了从阿月浑子叶片中提取总酚的最佳提取溶剂及影响浸提率的相关因素，并通过正交实验优化了最佳提取工艺条件：利用80%的丙酮水，按1：50的料液比，在60℃下连续浸提两次，每次60min。

Style 2-cleft or entire; stigmas 1 or 2; fruit drupes or nutletlike, usually divided into 2 or 4 pyrenes, rarely undivided; cotyledons not plicate.

花柱2半裂或全缘；柱头1或2；通常，坚果状的果核果或分为2或果核，很少不裂；子叶不折扇状。

Seeds 1-4, without endosperm; cotyledons plicate.

种子1-4，没有胚乳；子叶折扇状。

Seeds 1 to many per follicle, on inner margin of foliaceous endocarp, globose, endosperm flat or plicate; cotyledons flat, very thin.

每蓇葖果种子1到多数，在叶状内果皮内部边缘的上，球状，胚乳平或折扇状；子叶平，非常薄。

A systematic study was made on the induction of callus from terminal bud, cotyledon, plumular axis and the regenerated plantlets from terminal bud in Camptotheca acuminata Decne, and a large number of calli and cluster buds were obtained.

系统研究了以喜树顶芽、子叶、胚轴为外植体诱导愈伤组织的培养方法和以顶芽为外植体快速繁殖喜树的方法，获得了大量的愈伤组织和丛生芽。

The experiment result showed: when the medium was MS supplemented with 2,4-D2.0mg/L, BAl.0mg/L and NAA0.5mg/L, the callus induction rate of the cotyledon was 87.9%, the callus induction rate of the plumular axis was 82.9%, and the callus induction rate of the terminal bud was 6.7%.

实验结果表明在MS附加2，4-D2.0mg/L、BA1.0mg/L、NAA0.5mg/L的培养基上，子叶愈伤组织的诱导率为87.9％、胚轴的诱导率为82.9％、顶芽的诱导率为6.7％。

Results showed that the frequencies of shoot regeneration of cotyledons explants from 4 d old in vitro grown seedlings were markedly increased from 34% to 46% via a preculture procedure of 2 days period using the media containing the hormone combinations of 2,4 D 0.5-1.2 g/L and 6 BA 0.2 mg/L.

结果表明，苗龄4d的幼苗子叶于含2，4－D0.5－1.2mg／L和6－BA0.2mg／L的培养基培养2或6d后再转到分化培养基上培养，芽再生率提高34％－46％。

After having established genetic transformation system with tomato cotyledons as explant and determined the transformable of preculture time,incubation time and co-culture time,we set up the system of high frequency transformation of tomato cotyledons.Then hBMP-3m gene was transferred into tomato via Agrobacterium-mQdiated transformation,and the resistant plants to Hyg were obtained.

建立了以番茄子叶为外植体的遗传转化体系，确定了预培养时间、浸菌时间及共培养时间等转化条件，建立了番茄高频转化系统，然后通过农杆菌介导法将hBMP-3m基因导入番茄，并且获得了Hyg抗性植株。

Cotyledon explants culture ; preculture procedure ; high frequency shoot regeneration ; Brasscia napus ; Brassica campestris

子叶离体培养；预培养程序；高频率芽再生；甘蓝型油菜；白菜型油菜

Fig. 5. Influence of pycnidiospore density in soil on the disease incidence of melon cotyledon caused by Didymella bryoniae .

图五、土壤中添加蔓枯病菌柄孢子对於香瓜子叶发病的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。