早期阶段的幼胚培养成苗与外源激素有一定关系。
Plants normally grown at early stage in young embryos are related to exogenous hormones.
在原胚及幼胚胚原细胞质中也呈现很弱的正反应。
The embryo initials and suspensor cells showed very weak Feulgen positive reaction in the proembryo and young embryo.
结果表明：幼胚在MT培养基上直接成苗质量最好；
The results showed that seedlings directly generated from young embryos were the strongest on the solid MT medium.
研究了温度与棉花生长发育及幼胚离体培养的关系。
The relationship between air temperature and plant grow th and development and embryo development of cotton was studied.
基因型差异是影响小麦幼胚一步成苗培养的主要因素。
The difference from the gene type of wheat is an importance factor effecting on the one-step culture for immature embryos of wheat.
以杂交鹅掌楸幼胚为外植体，进行体细胞胚胎发生研究。
Somatic embryogenesis was successfully done in Liriodendron hybrids with the immature zygotic embryos as explants.
观察了大麦雌雄性配子的融合过程及其幼胚的早期发育。
The process of fertilization and early embryogenesis in barley was observed.
利用基因枪法，以菜豆几丁质酶基因转化小麦幼胚愈伤组织。
Using embryogenic calli from young embryos as explants, bean chitinase gene was transferred into spring wheat plants by microprojectile bombardment.
幼胚诱导的愈伤组织，经潮霉素抗性筛选，得到可育的再生植株。
The regenerated fertile plants were obtained by effective selection for hygromycin B resistance.
研表明花生幼胚离体培养可以发育为成熟胚，并初步建立了培养技术。
The results showed that peanut young embryos can be induced to be a mature one in vitro culture.
极早熟桃品种“春蕾”果实硬熟期的幼胚在胚珠离体培养条件下维持胚性生长。
The young embryo of super-early maturing peach variety 'Chunlei 'at fruit hard-ripe stage maintain embryonic growth under the conditions of in vitro culture of ovule.
但幼胚诱导的愈伤组织经固体继代培养和液体悬浮培养后，都没有胚状体的分化。
But all the calli induced by immature embryos did not differentiate the embryoids through solid and liquid subculture.
酶蛋白的最大含量在原胚阶段初为20.83%，以后至幼胚阶段急剧减少到4.9%。
Enzymic protein content decreases from the maximum at early phase of proembryo stage (20.83%) to the minimum at young embryo (4.9%).
利用PDS10 0 0 /氦气基因枪将水稻几丁质酶基因导入小麦幼胚盾片愈伤组织。
Rice chitinase gene was transferred into immature embryogenic calli of wheat using PDS1000/He particle delivery system.
结果表明：空篷栗在幼胚发育期、子叶发育期，其总苞和子房中的蛋白质含量均低于正常栗；
The results showed that in the developmental periods of young embryo and cotyledon, protein contents of ovary of empty shell chestnut were lower than that of normal chestnut;
本研究从优化玉米幼胚培养遗传转化受体系统和抗病毒基因pap的转化两个方面进行研究。
Thus the suitable acceptance system of maize genetic transformation and transferring resistant maize virus gene (PAP) were studied.
结果表明春性小麦幼胚离体培养的最佳诱导培养基为L3D2，最佳分化培养基为L3D0 1zt10。
The results showed that the optimized inducing and differentiation medium for tested cultivars are L3D2 and L3D0.1ZT10 respectively.
通过石蜡切片观察了转基因水稻幼胚的发育情况，结果表明细胞和组织的分化在胚的发育过程中被阻断了。
The rice embryo development was investigated by paraffin section, and the results indicated that cell and tissue differentiation was interfered during embryo development.
优化了小麦组织培养条件，建立了以小麦幼穗切段、幼胚盾片和成熟胚盾片为外植体的高效稳定再生体系。
The high efficient plant regeneration systems have been established by optimizing tissue culture conditions using inflorescence explants, immature and mature embryo scutella as the target materials.
从对酸铝敏感的栽培大麦品种“早熟3号”的花药和幼胚培养物中，分别诱导了单倍体和二倍体愈伤组织。
The haploid and diploid calli were induced respectively from anther and immature em- broy cultures in barley cultivar'Zhaoshu No. 3', which is susceptible to acid-aluminum.
小麦基因型扬麦158、扬麦10是优良的转化材料，以预培养4天的小麦幼胚为受体，培养力高，再生能力强。
Wheat genotypes Yangmai 158, Yangmai 10 are excellent transformation materials. Wheat immature embryos with 4 days preculture have high tissue culture response and strong regeneration capacity.
以4个小麦品种的幼胚为外植体，通过脱分化和再分化培养，研究了影响小麦幼胚愈伤组织诱导和再分化的因素。
The explants from immature embryo of 4 wheat varieties were cultured in vitro to study the affecting factors on callus induction and differentiation.
作者利用成单玉米15，18号的幼胚诱导的愈伤组织，系统地研究了愈伤组织的改良、悬浮细胞系的建立及植株再生。
The callus texture modification, establishment of suspension cell lines and plant regeneration were systematically studied with immature embryos from Chengdan15,18 genotypes in maize.
以该配方诱导幼胚，处于胚胎选择阶段和组织与器官分化阶段的幼胚，能诱导出松软、晶莹透明的愈伤，诱导频率为2-6％。
With this medium, soft, transparent callus can be induced from immature embryos of embryo selection or tissue and organ differentiation stages. The induction frequency was 2-6%.
以玉米自交系4112的幼胚为外植体，以MS为基本培养基，研究了不同质量浓度的2,4 - D对愈伤组织诱导的影响。
Influence of different mass concentration of 2, 4-d on callus induction in maize inbred line 4112 from immature embryos with MS being used as basal culture medium was studied.
合成后的新细胞自动按照植入DNA序列“重新编程”，直到胚胎进入囊胚期，即由50至100个细胞组成的一个中空的球形幼胚。
The egg automatically 'reprogrammed' its DNA until it reached a stage of the embryo known as a blastocyst — a hollow ball of 50 to 100 cells.
结果表明，幼胚和成熟胚的愈伤组织诱导率无明显差异，但较高浓度的2，4-D有利于成熟胚的诱导，而幼胚培养时2，4-D浓度的影响效果因品种而异；
The results showed that there were no difference in callus induction between two kinds of explant. High concentration of 2,4-D was effective on the mature embryos' induction.
野牛草组织培养的外植体有幼苗片段、叶基、雄花幼穗和成熟胚等。
In Buffallograss tissue culture, seedling segment, leaf base, mature embryo and immature male inflorescences can be used as explant.
将646枚2 ~4细胞期重构胚移植到38只同期化及非同期化的受体后无幼仔出生。
When 646 reconstructive embryos in 2-4 cells were transferred into 38 recipients under synchronous and asynchronous, no child was born.
将646枚2 ~4细胞期重构胚移植到38只同期化及非同期化的受体后无幼仔出生。
When 646 reconstructive embryos in 2-4 cells were transferred into 38 recipients under synchronous and asynchronous, no child was born.
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