光周期

光周期对紫花苜蓿SOD、POD活性的影响

Effect of photoperiod on SOD and POD activities in alfalfa

耐盐野生大豆（GlyCineSoja）的光周期效应

Effects of Photoperiod on Salt - tolerant Glycine soja

光周期对大豆杂交F2群体变异的影响及广适应性种质选育的研究

Effect of photoperiod on variation of F 2 population and breeding for wide adaptation germplasm of soybean

结果表明，ES－10具有明显的雄性育性转换特性，其育性转换受光周期的诱导。

The results showed that the fertility transformation ofES-10 was induced by photoperiod .

但是硝酸盐和NaCl对开花光周期途径的影响是不同的。

The effects of nitrate and NaCl on the photoperiod pathway were distinct , however .

光周期途径植物开花决定关键基因FT

FT Gene of Flowering Determination of Plants in Photoperiod Pathway

不同光周期下ISA褐蛋鸡松果腺GnRH-ⅠmRNA表达的变化

Change of GnRH - ⅰ mRNA expression in pineal Gland for ISA brown layers at different photoperiods

光周期对光敏核不育水稻光敏色素A含量及其mRNA丰度的影响

Effect of Photoperiod Treatments on phyto-chrome A levels and its mRNA abundance in Photoperiod-sensitive Genic Male-sterile Rice Mutant and the wild type

玉米光周期敏感相关性状的QTL定位与分析

QTL Mapping and Analysis for the the Relevant Traits of Photoperiod Sensitivity in Maize

对于ηQ，云和水汽、太阳辐射强度、光周期对它都有影响。

The cloud and water vapor , intensity of solar radiation , photoperiod have important influences on % η - Q % .

以德国鸢尾‘Royaltouch’为试验材料，研究了5种光周期对其花芽分化和光合作用的影响。

Iris germanica ' Royal touch ' was used to investigate the effects of 5 different photoperiods on flower bud differentiation and photosynthesis .

短日植物稀脉浮萍6746一般需要4个光周期诱导而开花。在4天的SD诱导中过氧化物酶活性明显增加，诱导4天时酶活性出现高峰，接着逐渐降低。

During 4 SD induction the total activity of peroxidase increased , it reached peak on the fourth day and then decreased .

高等植物中光周期对GA生物合成的调节主要是在20氧化和/或3β羟基化步骤。

GA 20 _oxidation and / or 3 β _hydroxylation are the main steps controled by photoperiod in GA biosynthesis in higher plants .

光周期敏感性可以在F1代表达，在F2代出现分离。

The results also indicated that photoperiod sensitivity appeared in F1 generation and separated in F2 generation .

现已明确FT基因在拟南芥光周期诱导开花途径中起着关键作用。

It is well known that FT gene plays an important role in photoperiod pathway regulating flowering in Arabidopsis .

光周期的延长可以使叶绿素a/b的值、游离氨基酸的含量显著增加，MDA的含量显著的降低。

Chlorophyll a / b and amino acid content were increased significantly , but the content of MDA was decreased remarkably with increasing of the time of illumination .

目前，一般按照对以上因素的反应将晚花突变体归于四条开花调控途径：光周期途径、春化途径、自主途径和GA途径。

At present , the late-flowering mutants are fallen into four pathways : photoperiod pathway , vernalization pathway , autonomous pathway and GA pathway according to factors described above .

光周期信息的积累存在一个阈值，即需要积累一定数量的长夜或短夜循环去诱导50%的个体发育或滞育；预培养天数均为4d；

The threshold of photoperiodic information accumulation , i.e. the required day number for making 50 % individuals response .

CIMMYT玉米种质群体主要农艺性状的遗传变异和光周期敏感性

Genetic Variation of major agronomic traits and photoperiod sensitivity of CIMMYT maize germplasms

在模式植物拟南芥（Arabidopsisthaliana）中，至少存在4条调控开花时间的途径，包括光周期途径、春化作用途径、自主开花途径和赤霉素途径。

Molecular genetic studies on Arabidopsis thaliana revealed four main flowering controlling pathways : photoperiod , vernalization , autonomous , and gibberellin .

强光照和16h光周期最适于性化。

High light intensity and 16h were found to be optimal for sexualization .

认为SG型在苎麻育种中具有重大的实用价值.也是研究光周期反应型及性型遗传的良好材料。

It is consid-ered that SG type is useful for ramie breeding and is very advantageous to study photoperiod-reaction and heredity of sexual types .

光周期对SGo的发生无明显影响，12h以下短日照促进SGi发生。

Photoperiodical treatment had less influence on SGo , while SGi was promoted by daylength below 12 h.

对温、热带玉米杂交后代RIL的评价及其光周期敏感性研究

Evaluation of RIL Derived from Temperate Zone and Tropical Zone Maize Inbred Line and Studies on the Photoperiod Sensitivity

光周期敏感核不育水稻农垦58S不育花药的显微结构变化

Changes in Anther Microstructure of the Photoperiod-Sensitive Genic Male Sterile Rice

以毛泡桐、兰考泡桐和白花泡桐叶片为外植体，在其体外器官直接再生的最适MS和1/2MS培养基上，研究了不同光周期对泡桐叶片体外植株再生的影响。

The effects of different photoperiods on in vitro plantlet regenerations from leaves of Paulownia tomentosa , P. fortunei and P.elongata on the optimal MS and 1 / 2 MS media for their in vitro organogenesis respectively were studied .

结果表明：光质、光周期对SOD活性、Chl、pro含量影响差异显著，对MDA含量影响不显著；

The results showed : there was significant difference among different lights , different light periods treatment concerning SOD activity , contents of Chl and pro , but content of MDA was not significant ;

CHM明显抑制光周期诱导开花过程中过氧化物酶活性的增强和同工酶带的增多，而5Fu则无此作用。

The appearance and the increase in activity of peroxidase isozymes were inhibited strongly by CHM but not by 5-Fu .

【目的】研究玉米的光周期反应，克隆出玉米中的EMF同源基因并研究其表达模式。

【 Objective 】 The aim of the research is to study the response to photoperiodical variation , clone the EMF gene in maize and study the expression pattern of this gene .

谷子（SetariaitalicaBeauv.）在不同光周期下酯酶同工酶和某些生理特性的比较研究

A comparative study on the esterase isoenzymes and some physiological characteristics in millet ( setaria italica beauv . ) under different photoperiod treatments