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柱头上
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  stigmas
     50% of stigmas have no pollen, 20% have 1~2 pollens, and only 30% have many pollens.
     四合木的传粉效率较低:50%的柱头上无花粉,20%的柱头上有1~2个花粉,30%的柱头上有多个花粉;
短句来源
     and the SiSi pollen treated with SiSi stigma-pellicle protein is incompatible with mature SjSj and SaSa and immature SiSi stigmas.
     经SiSi柱头表膜蛋白处理过的SiSi花粉,授于花期的SjSj和SaSa以及蕾期的SiSi柱头上,原来的亲和性消失。
短句来源
     The percentage of stigmas with pollen deposition was higher than 76.58% in 3 populations, but the number of pollen grains per stigma was not enough to pollinate the ovules in each ovary.
     统计3个居群柱头上落置的花粉量,76.58%以上的柱头接受了花粉,但柱头上的花粉量平均低于胚珠数;
短句来源
     With the aid of dripping GA3 to the wheat stigmas one day after pollination and then by culturing the young embryos in vitro 12-16 days later,some intergeneric hybrids between Triticum aestivum var.Chinese Spring(2n = 6x = 42)and Hordeum bulbosum USSR(2n = 4x = 28)had been obtained. In case of using monosomic 5B of Chinese Spring as the female parent,a few hybrid grains were obtainable without the latter procedure.
     以中国春小麦(2n=6X=42)为母本,苏联球茎大麦(2n=4X=28)为父本,进行属间杂交,授粉24小时后,在已授粉母本的柱头上滴赤霉酸(GA3),刺激幼胚生长,以中国春单体5B为母本的,可以获得少量结实的杂交种子;
短句来源
     The results are as follows :The rate of pollen accepting on stigmas 2 hours after flowers opening is 0.This value of 4 hours or 8 hours after flowers opening is 53.8%or 98.3% respectively.
     结果表明:该种雌花开花2h 柱头受粉率为0,开花4h 和8h受粉率分别为538% 和983% ,柱头上花粉萌发率达100% ;
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  “柱头上”译为未确定词的双语例句
     The number of pollen on stigma is 1/3-1/5 of the number of pollen in one floret.
     柱头上的花粉数目为单花花粉量的1/3~1/5;
短句来源
     The results are as follow: 1.Pollen germinates on stigma 2-3 h after pollination.
     其结果如下:1.授粉后2~3h,花粉在柱头上萌发。
短句来源
     From 1994 to 1996, the mean number of pollen grains on each stigma ranged from 4.4 to 42.6, much more than ovules(2) in each pistil.
     每柱头上的平均花粉量为4.4~42.6粒,明显超过胚珠数2。
短句来源
     5 The seed-setting for the cross of autotetraploid 4033 X R725 was verylow, but 80% haploid pollen can geminate on the pistile of tetraploid 4033,penetrate into, and arrive at micropyle.
     5、SAR-4的4033株系与二倍体R725杂交结实率低,但二倍体R725的花粉80%均能在四倍体4033柱头上萌发并顺利伸入柱头到达珠孔。
短句来源
     When pollinated after 72h, the tube reached the 3/4 location away from ovary, the tube bottom of incompatible apricots were swelled and stopped growth, while the tube of compatible vatieties could still grow and reached into the ovary when pollinated after 96h.
     花粉管在柱头上的生长初期并无显著差异,但是自交不亲和组合在授粉72小时后花粉管到达柱头距子房约3/4位置处,末端膨大,停止生长,而自交亲和与杂交亲和组合的花粉管可以继续生长,并在授粉后96小时进入子房。
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  相似匹配句对
     4. Wet stigma and inapertus style with transmitting tissue were observed.
     4.湿型柱头
短句来源
     4、 Stigma exserted rate. .
     4、柱头外露率。
短句来源
     The natural germination of pollens were simultaneously obserserved on stigma.
     同时观察花粉在柱头自然萌发。
短句来源
     (4) Pollen tube entered thestigma and then got out of it.
     花粉管在柱头绕行不进入柱头
短句来源
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  stigmas
Observations on pollinator movements and flower emasculated experiments in natural populations showed that most of pollen grains deposited on stigmas in a flower are foreign.
      
The functional and cosmetic disadvantages and stigmas related to the therapy influence the medical recommendations for each individual patient.
      
Also somatic embryogenesis and plant regeneration were obtained from the cultures of styles and stigmas of lemon.
      
A large number of HIV-infected individuals have sought and attained emotional well-being despite carrying the virus and its associated stigmas.
      
Pollen was treated directly with infrared or ultraviolet radiation, and indirectly with chemicals that were applied to the stigmas before pollination.
      
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The intergeneric hybrid between barley and wheat has been obtained by the aid of culture of the young embryo in vitro 9-12 days. At first, only the roots differentiate from the hybrid young embryo and only a trace of the shoot appear. After adjusting the content of kinetin in the medium, the normal differentiation of the shoot tips is observed. There are 28 chromosomes for Tianjin 1 barley×Xiaoyan 58 wheat most cells being in the root tip of the hybrid. This number fits in well with the expectant (7 + 21). But...

The intergeneric hybrid between barley and wheat has been obtained by the aid of culture of the young embryo in vitro 9-12 days. At first, only the roots differentiate from the hybrid young embryo and only a trace of the shoot appear. After adjusting the content of kinetin in the medium, the normal differentiation of the shoot tips is observed. There are 28 chromosomes for Tianjin 1 barley×Xiaoyan 58 wheat most cells being in the root tip of the hybrid. This number fits in well with the expectant (7 + 21). But cells containing 21 or 49 (7 + 42) chromosomes are also found. The latter contain 7 haploid chromosomes of barley and 42 diploid of wheat.

用矮六稜裸大麦天津1号与多种小麦品种进行正、反交。授粉后在柱头上滴赤霉酸,刺激幼胚生长,并结合离体培养技术培养杂种幼胚。在几个组合里获得大麦与小麦属间杂种。对杂种幼苗的形态和根尖细胞染色体进行了观察,并且报告了调整培养基中激动素浓度后的效果。

The present report deals with the fertilization process and its duration during different phases in Gossypium hirsutum. The different methods used for investigation in this process are also introduced.The total duration from germination of pollen grains on the stigma to the completion of karyogamy is about 25-28 hours. This fertilization process of cotton may be divided into following phases and the duration of each phase is determined, the germination of pollen grains on the stigma, 1-4 hours; the growth of...

The present report deals with the fertilization process and its duration during different phases in Gossypium hirsutum. The different methods used for investigation in this process are also introduced.The total duration from germination of pollen grains on the stigma to the completion of karyogamy is about 25-28 hours. This fertilization process of cotton may be divided into following phases and the duration of each phase is determined, the germination of pollen grains on the stigma, 1-4 hours; the growth of pollen tubes in the style, about 10 hours; the growth of pollen tubes in the ovary cavity and the entry of the tube into embryo sac, about 10 hours; the fusion of male and female nuclei about 4 hours. After the fusion of sperrn and polar nuclei, the first mitosis of the primary endosperm nucleus takes place at once. This total process may be completed not more than 4 hours, but the zygote always has an obvious interval period before the first mitosis begins, it takes about 50-60 hours.The theoretical and practical significence on the study of the duration of the fertilization process is discussed

本工作以陆地棉岱字15号为材料,在人工授粉条件下,研究了棉花的受精过程及其各阶段的持续时间,并介绍了不同阶段所用的研究方法。 从花粉在柱头上萌发开始至完成雌雄性核的融合,总持续时间为25—28小时。棉花受精过程所经历的各个阶段及其持续的时间如下:花粉在柱头上的葫发,发生在传粉后1—4小时;花粉管在花柱中生长,约10小时;花粉管在子房腔中生长及进入胚囊,约10小时;雌雄性核融合,约4小时。极核与精子融合后形成的初生胚乳核,很快进行第一次分裂,发生在融合后的4小时。合子开始第一次有丝分裂前,有一个明显的间隔期,需经历50—60小时。 对研究受精过程持续时间的理论及实践意义进行了讨论。

With the aid of dripping GA3 to the wheat stigmas one day after pollination and then by culturing the young embryos in vitro 12-16 days later,some intergeneric hybrids between Triticum aestivum var.Chinese Spring(2n = 6x = 42)and Hordeum bulbosum USSR(2n = 4x = 28)had been obtained.In case of using monosomic 5B of Chinese Spring as the female parent,a few hybrid grains were obtainable without the latter procedure.It was found that the hybrids were intermediate in plant type between the two parents,and there...

With the aid of dripping GA3 to the wheat stigmas one day after pollination and then by culturing the young embryos in vitro 12-16 days later,some intergeneric hybrids between Triticum aestivum var.Chinese Spring(2n = 6x = 42)and Hordeum bulbosum USSR(2n = 4x = 28)had been obtained.In case of using monosomic 5B of Chinese Spring as the female parent,a few hybrid grains were obtainable without the latter procedure.It was found that the hybrids were intermediate in plant type between the two parents,and there were 24-30 chromosomes in a number of pollen mother cells of the hybrids which were self-sterile haploids.Our result differed from that reported by the Plant Breeding Institute in Cambridge,England.

以中国春小麦(2n=6X=42)为母本,苏联球茎大麦(2n=4X=28)为父本,进行属间杂交,授粉24小时后,在已授粉母本的柱头上滴赤霉酸(GA3),刺激幼胚生长,以中国春单体5B为母本的,可以获得少量结实的杂交种子;而以中国春为母本的,则必须结合离体培养杂种幼胚,才能获得中国春小麦与球茎大麦属间杂种,杂种植株的形态表现为中间型,其染色体数在24—30之间,自花不育。我们的试验结果与英国剑桥植物育种研究所不同,

 
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