杂交

The genotypical differences of anther-culture ability and its inheritance were investigated with seven keng rice Oryza saliva sub sp.

kcng品种按双列杂交方式配成的21个杂交组合进行花药培养，测定它们的愈伤组织诱导率和绿苗分化率。

Morphology of sexual reproduction abortion in'High Noon', a distant hybridization cultivar of tree peonies(P.delavayi var. lutea×P. suffruticasa), was systematically investigated with light microscopy and cross. The results indicated that:(1)The stamens matured earlier than the gynoecia and pollens dispersed at the early stage of anthesis but the rate of normal 2-celled pollens were merely 2.41%.

采用光镜和杂交等方法对牡丹远缘杂交一代品种'正午'有性生殖败育进行系统形态学观察发现：(1)雄蕊较雌蕊先成熟，初花期即散粉，正常2-细胞花粉仅占2·41%，且花粉在多种培养液中、在自身和其它两种柱头上均不萌发；柱头在谢花期大量分泌粘液，进入最佳授粉状态；(2)同一胚珠中多个大孢子母细胞减数分裂高度不同步，胚囊发育与受精延迟，部分胚乳游离核在细胞化时期分裂异常；(3)自花及品种内异花授粉不结实，天然授粉结实率为0·053‰~0·130‰。

The higher percentage of cross-fertilized kernel specifically expressed pattern was observed in highly heterotic hybrid, after comparison of gene differential expression between cross-fertilized and self-fertilized kernels during the early development of seed in wheat and maize, respectively. This indicated that there may be have common molecular mechanism for heterosis in different crops.

本文对玉米和小麦在种子发育前期杂交和自交间基因差异表达进行了比较，发现杂交特异表达类型与杂种优势均存在一定的正向关系，说明不同作物杂种优势形成在分子水平上具有共同点，即相同表达模式的基因或基因群在不同作物杂种优势形成中发挥一致的作用。

Results indicated that suppression of malignancy was observed in the hybrid cells, they became differentiated morphologically and functionally by:(1) changes in histochemical staining, nucleus-cytoplasm in ratio, and increase in cell size and nucleal heterochromation, but decrese in cell surface microvilli and number of nucleoli;(2) decrease of growth rate, mitotic index and DNA synthesis rate;(3) loss of the ability to growth in soft agar medium, and non-tumorigenic under heterotransplantation to nude mice;(4) reduction of chromosome number mainly of rat derivative and decrease in chromosomal aberration rate.

实验结果表明：（1）杂交细胞出现瘤细胞与网织红细胞杂交同样的表型逆转及去恶性化特征，主要表现在细胞体积增大、核质比例减小；DNA合同速率降低、分裂指数下降，细胞生长显著减慢；在软琼脂中不形成集落，在裸鼠体内失去了长瘤能力。

Hybrid seeds were obtainedamong 23 crosses when Hordeum vulgare was used as female parent withan average seed setting rate of 2.8%.

在以大麦为母本的23个杂交组合中得到了种子，平均杂交结实率为2.8%。

The above results indicated that hybridation combination, which selected based on the genetic distance of DNA polymorphism, can produce the excellent hybrid.

研究结果表明，采用DNA多态性遗传距离为依据组配的杂交组合，能够获得丰产性能更好的优良一代杂交组合。

By using these antibodies, which were raised to immunoreact with total proteins of purified mitochondria from different organs of mung bean seedlings, we find that there were two hybridizable AOX bands in mitochondria in mung bean seedlings.

将此抗体与来自绿豆幼苗不同器官线粒体的总蛋白分别进行Western杂交，可观察到绿豆幼苗线粒体中具有两条清晰的AOX杂交带，它们的分子量分别为35kD和38kD。

Histological observation showed that there were no significant differences in the gonad development cycle between hybrids and S. intermedius, and during the whole development period of gonad, only the ovary can produce few mature ovary cells and the mature sperm were not found in testis.

杂交海胆在生殖腺发育的整个过程中，生殖腺指数虽然也出现周期性的变化，但组织切片观察发现杂交海胆生殖腺发育不能象母本一样有明显分期，只有个别雌性个体能产生成熟卵细胞，雄性个体未见成熟精子。

Only one cell line named OHe which could secrete McAb stably was obtained.The isotype of the McAb was IgGi,the average number of chromossme of the hybridoma cell line was 97 respectively.

经鉴定该单抗为IgG_1亚类，杂交瘤细胞的平均染色体数目为97条，杂交瘤细胞培养上清及小鼠腹水单克隆抗体的ELISA效价分别为1：1024和

With higher content of β-carotene. The length and width of perianth segment(inner 2 ring) were osculant, the former showed matroclinous inheritance, the latter showed patroclinal inheritance, so Liriodendron interspecific hybrids with bigger perianth segment could be selected by Liriodendron chinense?

杂交鹅掌楸内两轮花被片长度和宽度为双亲中间型，分别偏向母本和父本，用内两轮花被片较宽的鹅掌楸作母本，内两轮花被片较长的北美鹅掌楸作父本，有望选育出大花的杂交鹅掌楸个体。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！