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151. Fertilization: Only one sperm cell penetrates the outer layer of the cell.

152. The sulfur nutrient was significantly affected by fertilization system. The nitrogen fertilization could improve the quantities of ammonification bacteria in soil.

153. Seed development in most instances commences following fertilization of the ovule.

154. The 3 antipodal cells disappeared as the process of double fertilization.

155. Objective To investigate the fertilization ability of spermatozoa derived from neonatal mouse testes grafted into immunodeficient mice by intracytoplasmic sperm injection(ICSI).

156. This article summarized the progress of study on pedology, fertilization technology, physiology, heredity, culture and ecology about potassium nutrition of tobacco in china.

157. The main factors influencing the wheat yield in downland were initial nitrogenous dressing, the amount of nitrogenous fertilizer applied for different leaf age and close fertilization.

158. Objective To study the effect of artificial fertilization on infertility from anovulation.

159. The results of 12-year located fertilization in grey desert soil of Xinjiang showed that treatments of N, NP , NK, NPK could improve the grain quality in some indexes compared with CK.

160. Originally from the southern region of Andalucia, the woman had previously undergone in vitro fertilization abroad, the official said.

161. Self - pollination, and subsequently self - fertilization, in orchards always takes place to some extent.

162. Reproduction: gonads are aggregations of developing gametes. Fertilization is external, producing free-living planula larvae. Asexual budding is common.

163. But the increased production amounts differ each other by applying different fertilization measures.

164. In conclusion, yak are able to crossbreed with Bos taurus, but the rates of cleavage and blastocyst development of resultant hybrid embryos were different between different fertilization combinations.

165. The paper reviews the constitution, molecular structure, biological function and application of zona pellucida in male fertilization.

166. To investigate the impact of antithyroid antibody on miscarriage rate of in vitro fertilization and embryo transfer (IVF-ET) pregnancy.

167. The cytology changes in the cross0fertilized eggs 10 to 180 minutes after fertilization between Bufo raddei(female)and Bufo bufo (male)was investigated.

168. The yield of grass could be obviously increased by taking measures of fertilization, irrigation, plough and scarification to the retrogressive Leymus grassland.

169. Increased motility, zona binding and oolemma fusion capacities are also acquired within the epididymis and are necessary for those cells that finally arrive at the site of fertilization.

170. Based on field survey, it is identified that the non-point sources of Wuli Lake are from urban roads, residential areas, agriculture, and fertilization of greensward.

171. When B. napus was used as maternal parent(sentencedict.com), the fertilization frequency and siliqua setting rate were lower and the number of hybrid seeds and plants were higher than that of reciprocal cross.

172. The amniotic epithelial cells ( AEC ) are formed from epiblasts on the 8 th day after fertilization.

173. Results showed that regulative fertilization changed agronomical properties compared with conventional fertilization and increased significantly grain weight of one spike and grain yield.

174. Fertilization is an important measure to increase the production of natural rubber.

175. Many plants have a self-incompatibility system stopping self fertilization, but others are self-fertile.

176. Aim To study the toxicity of the lead acetate on the fertilization ability of sperm and the development of early embryo in mice.

177. As the male gametophyte, pollen delivers sperm to the sac for fertilization by pollen - tube polarized growth.

178. Chemical fertilizer is hurtless . The problem of the fertilization comes from unreasonable use.

179. The result could be theoretical fundament for optimizing fertilization and improving of yield and quality of beet sugar.

180. At the same type of gametes and meet with the special-shaped gametes fertilization methods, cells have flagella ,[www.Sentencedict.com] the fusion of two gametes in the water swimming meet and achieve fertilization.