查询词典 protocorm

The results indicated that the treatment of irradiation restrained the growth and differentiation of protocorm, especially to roots.The LD50 is 67.23Gy, because the protocorm is a integrate embryoids and higher tolerance was found. Ploidy analysis showed that most of aberrant seedlings go with the change of DNA and they were not euploid. When the plants trearted by irradiation, some of aberrant seedlings appeared stem forfication, and leaves appeared chlorophyll-deficient or green-white.,probably due to some genes' expression or closing.

结果表明：辐照处理对种胚原球茎的生长和分化有抑制作用，尤其是对根的抑制更为明显；由于种胚原球茎的完整性好，耐受性强，其辐照半致死剂量(LD50)为67.23Gy；流式细胞分析表明，大多数外部形态发生改变的植株其细胞内DNA的倍性发生了改变，出现相当多的非整倍体；此外，辐照产生的变异苗出现茎分叉、叶片缺绿或白绿相间等现象，可能是由于某些基因的表达与关闭引起的。

Maculate protocorm was highest in the KC solid medium, being 71.9%, and their seedling growth was best and the diameter of the protocorm was(5.8±0.3) mm. The survival rate of D.nobile protocorm was highest in the B5 solid medium, being 65.0%, and their seedling growth was best in the KC solid medium and the diameter of the protocorm was (3.8±0.6) mm.

秋花独蒜兰原球茎在KC固体培养基上的成活率最高，为71.9%，且幼苗生长发育状况最好，原球茎直径为(5.8±0.3)mm；石斛兰原球茎在B5固体培养基上的成活率最高，为65.0%，在KC固体培养基上的生长发育状况最好，原球茎直径为(3.8±0.6)mm。

To establish the appropriate system for selection of Agrobacterium-mediated transformation of protocorm-like bodiesof Dendrobium nobile Lindl,materials were cultured in liquid paper medium,solid culture medium and liquid filter paper bridge,with Hyg at 7 different concentrations such as 0,20,40,50,60 and 80 mg/L.

为确立农杆菌介导法转化金钗石斛类原球茎的适宜的选择体系，利用液体纸基、固体培养基与液体滤纸桥3种培养方式，以0，20，40，50，60，80 mg/L质量浓度的潮霉素梯度试验，发现不同培养方式的选择效果有所差异。

The effect of external factors on protocorm-like-body inducement and plant regeneration in Phalaenopsis were studied.

对影响蝴蝶兰叶片原球茎状体(PLB， Protocorm-like-body)发生和植株再生的外部因子进行了研究。

It is very easy to differentiate for protocorm from the seed germination. After two months, protocorm developed young seedlings.

种子萌发后形成的原球茎保持阶段十分短暂，极易分化，2个月后形成小苗。

The increment of 6-BA concentration can increase the protocorm propagation obviously. And the matching of high concentration of 6-BA and low concentration of NAA is more suitable for the protocorm propagation of C. grandiflorium. 6-BA at the concentration of 1.5 mg/L was most favorable for protocorm induction and differentiation.

结论］6-BA浓度的增加，可明显提高原球茎的增殖，高浓度6-BA与低浓度NAA的配比较适合大花蕙兰的原球茎增增殖；6-BA在1.5 mg/L时最有利于原球茎的诱导分化。

The phenomenon of vitrification could restore significantly after culture 2 or 3 generations in the culture medium without hormone. The differentiation ability of protocorm restored and the state of plant growth was consistent with the formal protocorm. It could continue applying to the manufacture of tissue culture.

玻璃化类原球茎在无植物生长调节剂培养基中经2~3代恢复培养后，数量下降到0.84%，玻璃化现象可得到明显恢复，恢复后的类原球茎的分化能力和植株生长状态与正常类原球茎一致，无变异现象发生，可继续应用于组培生产。

As PX-9 adopts the protocorm of PX-2 and the mobility of protocorm of PX-2 is controlled at 30-33 seconds, the spraying shall adopt electrical spray gun with a power of above 1.5KW.

PX-9在工程中使用可涂可喷，由于PX-9采用PX-2原基体，流动度均控制在30-33秒之间，使用喷枪时需1.5KW以上的电动喷枪。

Result The optimum medium formula for protocorm propagation in tissue culture of C. grandiflorium was MS+0.1 mg/L 6-BA. The suitable medium for protocorm induction and differentiation in tissue culture of C. grandiflorum was WS+1.5 mg/L 6-BA+0.3 mg/L NAA with the bud-inducing rate up to 130%. The suitable medium for root inducement was 1/2MS+0.2 mg/L NAA+1.0 mg/6-BA and the survival rate of in vitro plantlets after transplanting was 78%.

结果］大花蕙兰组织培养原球茎粉殖以MS+0.1 mg/L NAA+2.0 mg/L6-BA培养基配方最好；适合大花蕙兰组织培养原球茎诱导分化的培养基配方为MS+1.5 mg/L6-BA+0.3 mg/L NAA，诱导出芽率可达130%；适合大花蕙兰诱导生根的培养基配方为1/2 MS+0.2 mg/L NAA+1.0 mg/L6-BA，试管苗移栽后成活率为78%。

The 1/2 MS medium supplemented with 1.0 mg·L-1 BA and 0.1 mg·L-1 NAA was very beneficial to the protocorm differentiation and propagation of D.candidum .The highest protocorm propagation index was obtained from the medium containing the activated carbon.The highest root numbers and length were observed in plants growing in 1/2 MS medium containing 0.5 mg·L-1 NAA.

结果与结论：添加20%马铃薯液有利于种胚的萌发，种胚萌发率为79.37%；BA 1.0 mg.L-1和NAA 0.1 mg.L-1最有利于原球茎增殖，培养基中添加2%活性碳原球茎增殖倍数高；NAA有助于试管苗的生根，不同含量NAA以0.5 mg.L-1时试管苗平均根数最多和平均根长最长。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失