first filial generation

Determination of Performance for First Filial Generation of Limousin with Local Yellow Cattle

利木赞牛与本地黄牛杂交一代性能测定

The crossing from two different geographical wild populations in-creased the genetic diversity of the first filial generation .

不同地理种群间杂交能够增加子代的遗传多态性。

The Effect of Parental Selection on First Filial Generation of Pinctada martensii Dunker

马氏珠母贝亲代选择对子一代的影响

Study on the Reproductive Behaviours of Wild Japanese Quails , Domestic Quails and Their First Filial Generation

野生日本鸣鹑、家鹑及其杂交F1代繁殖行为的研究

Ln compar is on to the first filial generation , the second filial generation grew faster and the curve for daily weight gain put forward .

子二代鸟在生长速度方面与子一代鸟比较，表现为平均日增重曲线峰值前移和达90公斤体重的饲养月龄提前一个月。

Comparative Study on Principal Genetic Characters of the First Filial Generation ( Megalobrama hoffmanni ♀× Megalobrama amblycephala ♂) and its Parents

杂交鲂（广东鲂♀×团头鲂♂）及其亲本主要遗传性状的比较研究

Investigation on the Crossbreeding effects of Limousin on Yellow Cattle in Beiliu Determination of Performance for First Filial Generation of Limousin with Local Yellow Cattle

利木赞改良北流市黄牛效果调查研究利木赞牛与本地黄牛杂交一代性能测定

Intercross experiment has been done between wild Japanese quails and domestic quails , the earlier growth and development , breeding habit have been observed and measured on the first filial generation ( F_1 ) .

对野生日本鸣鹑和家养鹌鹑进行杂交试验，观察并测量F1代早期生长发育和繁殖性能。

We used collagenase digestion and trypsin chosen digestion method to isolate and purify bovine mammary epithelial cells , and culture the original generation of mammary epithelium cells , at least the cells culture processing to the first filial generation .

采用胶原酶消化法和胰蛋白酶选择性消化法对奶牛乳腺上皮细胞进行分离、培养和纯化。对奶牛乳腺上皮细胞进行原代培养以及传1代细胞的传代培养。

The result of test in the second flight shows that the percentage of chromosome bridge in the neuroblasts of the third instar larvae of the first filial generation produced by female parents in the fourth to sixth day after flight is increased .

第二次飞行实验结果也呈现，亲代雌蝇在飞行后第4&6天所产的子1代中，三龄幼虫成神经细胞染色体桥频率增高。

By providing a dainty feed , adopting two kind of mating mode that female and male are on the scale of 1 : 1 or 2 : 1 , The changes of behavior and reproduce capability and some of the biology characters of their first filial generation were studied .

通过提供适口的饲料，采用雌雄1：1、1：2两种交配方式，研究了树鼩驯化过程中行为、繁殖性能的改变及子一代部分生物学特征。

Features of first and second filial generation of jelly producing bees

蜜蜂浆杂一代与二代产浆性能观察

The average genetic distances of the first group of parent shrimp and their first filial generation were 0.195 9 ? 0.039 2 , 0.143 5 ? 0.026 8 , respectively ;

第一个亲本群体及其子代个体间的平均遗传距离分别是0.1959±0.0392和0.1435±0.0268；