查询词典 cotyledon

The fluorescence microscopy showed that Casparian strips were absent from cotyledon endodermis, while the radial wall of endodermis in primary and two-year-old leaves were occupied with Casparian strips.

通过荧光显微观察发现，白皮松子叶内皮层不具凯氏带，而初生叶及2 a生针叶均存在凯氏带加厚现象。

The plantlet regeneration from Cotyledon of Citrullus lanatus was studied.

以无籽西瓜黑蜜5号无菌苗子叶为材料，对组织培养植株再生的条件进行了详细的研究。

The results showed :The most suitable medium for buds induction from cotyledon of Citrullus lanatus was MS＋6-BA 3.0mg/L＋NAA 0.1mg/L.

研究结果表明：子叶芽诱导的最佳培养基配方为MS＋6-BA3.0mg/L＋NAA0.1mg/L。

Plantlet regeneration from cotyledon of Citrullus lanatus cv. Zhangkang No. 4 was studied. The results showed that aseptic seedlings should be cultured in dark for 3d, then exposed to a photoperiod of 16/8h/d for 3d. The callus induction rate was higher in cotyledons placed facing downwards to the medium than in those facing upwards. The highest induction rate occurred in MS medium containing 6-BA (2.0mg/L), kinetin (1.0mg/L)and GA3 (1.0mg/L). The induction initiated in dark and took 7 days, while callus growth and differentiation proceeding for 7 days under 16/8h light-dark cycles. A highest rate of embryogenic callus was obtained after 3 successive subcultures.

以无子西瓜郑抗4号无菌苗子叶为外植体，进行了体细胞胚发生及植株再生的研究，结果表明，无菌苗应先进行3d暗培养，然后采取光照16h/d和黑暗8h/d培养3d；将子叶的叶面朝下放置于培养基上的愈伤组织诱导率高于叶面朝上的培养方式；子叶诱导胚性愈伤组织的最适培养基配方为MS+6-BA2.0mg/L+KT1.0mg/L+GA31.0mg/L；诱导需要在黑暗条件下启动，进行7d暗培养，而生长分化于光照16h/d和黑暗8h/d条件下培养7d；继代3次得到的胚性愈伤组织最多；最适生根培养基配方为1/2MS+IBA0.3mg/L。

Seeds straight; cotyledon complanate.

种子直；子叶扁平。

Multiple comparisons suggested that cotyledon with petiole or 1/4 piece of cotyledonary laminae from 7 days old aseptic seedling had much higher shoot regeneration frequency, reaching to over 90%.

多重比较结果表明，以7d苗龄无菌苗的带柄子叶或1/4子叶片为外植体较好，出芽率较高，达90%以上。

Methods］ Taking euphylla,cotyledon and hypocotyledonary axis as explants,the influences on the callus induction rate and the growth dynamic of Dictamnus angustifoliu in different medium,hormone matching and carbon sources were investigated.

方法］以幼叶、真叶、下胚轴为外植体，研究不同培养基、激素配比、碳源对新疆白鲜出愈率的影响以及愈伤组织生长动态变化。

The cotyledon cubes as explants of oil tea were cultured on MS medium added with 2,4-D 2.0mgL^(-1) and KT 1.0 mgL^(-1) to form embryogenetic callus.

以油茶子叶块为外植体，在附加2.0mgL^(-1)2，4-D和1.0 mgL^(-1)KT的MS培养基上进行培养，观察诱导产生的体细胞胚性愈伤组织细胞学结构。

This paper studied the influence of different hormones on the epicotyls, hypocotyls, cotyledon of buckwheat Fagopyrum tataricum Gaertn.

为提高荞麦种子萌发率及其愈伤组织的诱导效果，研究了不同激素对苦荞Fagopyrum tataricum Gaertn。

The preliminary bioassay showed that some title compounds exhibited certain fungicidal activities and cucumber cotyledon root-formation promoting activities.

初步的生物活性测试结果表明，部分化合物具有一定的杀菌活性和促进黄瓜子叶生根活性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。