性早熟

The simulation results showed that the app roach p resented has better global con2 vergent ability and stability in multi2modal search space, and can avoid p rematurity effectively. So it is a global op2 timization algorithm with good feasibility and high efficiency

结果表明，该算法在多模态搜索空间中具有更好的全局收敛性、稳定性和寻找极值点能力，能够克服早熟现象，是一种有效的全局优化搜索方法

But theimprovement was still needed because of its late maturity and low grain-weight. The NChybrid is crossing with other vulgare so as to breed new NC hybrid suitable forproduction.

但在千粒重和早熟性上还有欠缺，目前正用其它普通小麦品种进行转育，以期培育出生产上能用的核质杂种小麦。

Long filament individual with thin filament size and premature mutant were obtained in Bombyx mandarina and Antheraea yamamai respectively after they were irradiated by He-Ne laser. Thus it is important for breeding variety that has choice characters

野桑蚕、天蚕经He-Ne激光辐照后，在野桑蚕、天蚕中分别产生长茧丝细纤度个体和早熟性变异体，对优良品种选育有重要意义。

Abstaining from premature sexual experience and developing sexual attitudes compatible with the values of family life.

避免产生性早熟的经历，形成与家庭生活准则相适应的对性的认识。

Exposures to either E or MXC did not change sex ratio at birth, but the litter size was smaller in the former group; On postnatal Day 21, male pups exposed to either E or MXC at early pregnant stage exhibited shorter AGD than the controls, with the change most pronounced after MXC treatments. AGD in female offspring was unaffected after MXC exposures, but E treatments produced longer AGD in the females than that recorded in the controls; early pregnant exposures to E or MXC also accelerated sexual maturation as significantly more females exhibited precocious vaginal opening at weaning; In males, MXC exposure during early pregnancy decreased serum LH and FSH, but not testosterone levels.

但是雌二醇处理组雌性小鼠的AGD比对照组记录更长；③孕早期暴露雌二醇或MXC也加速性成熟，表现为更多的雌性小鼠在断奶时出现明显早熟的阴道开放现象；④MXC处理组的雄性小鼠可降低血LH和FSH但是不改变睾丸酮水平。

The useful value as crossing parents on the new CP varieties intro- duced in 1980 were detailed studied. The results indicated that their hybrid progenies had the characteristics of early maturing,high sugar content, high yield and excellent ratooning ability. From these progenies,many good varieties,such as Yuetang 83/271,83/251,83/257,had been selected.

较详细研究了1980年引进的运河点甘蔗品种作杂交亲本的利用价值，结果表明杂交后代表现早熟、高糖、丰产、宿根性好，从中选育出如粤糖83/271、83/257、83 /251等优良的甘蔗新品种。

At the same time, fiber strength and micronaire would be improved with paying attention to the selection of high lint index. For Yuncheng, the key was to make the period from sowing to flowering long properly for improving the fiber length of short season cotton.

早熟性平均狭义遗传率，安阳点为46.0％，运城点为10.9％，石河子点为12.3％，棉株各性状的综合遗传率总体趋势是：安阳最高，其次为运城，石河子最低。

The results showed:（1） Rate of plant formation and male fertility recovery in the early maturity group was high.

结果表明：（1）早熟组的成株率高，育性恢复好；其中ICPH2363的成株率、单株荚数、百粒重等性状均表现较好。

Exist manifold types breeding materials in test field, manifest abundant germplasm resource, obviously existent prematurity type and late-maturity type . It is very difference of phenological phase, plant height, laminae area, chlorophyl content, stern diameter, seed production ,colour and shape of inflorescence and spike, yield of grass et al.

试验地引种驯化的猫尾草中存在着多种类型的育种材料，表现出丰富的种质资源，明显的存在着早熟、晚熟两种类型，这2种类型的材料在物候期、株高、叶面积、叶绿素的含量、茎杆直径、结籽性，花序及穗的颜色与形状，产草量等方面存在很大的差别。

Another factor behind the increase in sex crimes by minors is the earlier onset of puberty, the offical of AIDS Prevention Education Project for Chinese Youth, said.

中国青少年艾滋病防治教育工程的某官员说，未成年人涉性犯罪案件不断上升的另一个原因是早熟。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。