赤霉素在亚麻上的增产效果试验

一、试验目的 通过赤霉素在亚麻上的应用，促进亚麻增高，从而提高亚麻的等级和产量。     

赤霉素在果树生产中的应用

赤霉素(GA3),又名920,是—种植物生长调节剂,目前作为一种有效的农业增产、增收措施广泛用于农业生产。果树生产中多用GA3来打破种子休眠,促进果树生长,提高坐果率和果实品质     

GA_3在红地球葡萄上的应用技术规程

<正>赤霉素(Gibberellin,GA)是调节植物生长发育的五大激素之一,现已从高等植物和微生物中分离出100多种赤霉素,总称赤霉素类(GAs)。其中,尤以赤霉酸(GA3)应用最为普遍和重要,可促进作物生长发育,提早成熟、提高产量、改进     

大枣花期喷赤霉素可增产

正朝阳地区年降水少,特别是春季降水更少。5月下旬至6月上旬是大枣盛花期,此时如果气候干燥少雨,易形成"焦花"、脱落,影响大枣坐果;如果遇上特殊年份,降水偏多也易导致授粉不良和落果现象,造成减产。为解决这个问题,参照有关外地经验,我们进行了大枣盛花期喷赤霉素试验。试验在本镇高杖子村果园进行,选6年生大枣树30株,将其中10株喷赤霉素,浓度为50 mg/L;另10株喷清水;其余10株不做处理,为空白对照。喷药在每     

马铃薯催芽四法

<正>1.室内催芽法。选择通风凉爽、温度较低的地方,把马铃薯切成小块(每块有芽口1～3个),用凉水洗去汁液,晾干后用湿润沙土分层盖种催芽,堆积3～4层。面上盖稻草保持水分,温度保持20℃。芽长到0.5～1厘米时取出放在室外阴凉处炼芽1～3天即可播种。     

日光温室草莓栽培要点

一、品种选择选用全明星、宝交早生、A97-1、A98-2等品种。二、苗木选择栽培前选用有4～5片发育健全的完整叶、根系15条以上、单株重量在20～25克的种苗。种苗可以直接从繁育单位购进,也可以引进无病毒原种苗。     

番茄果实发育的激素调节

果实发育是一个复杂的同时也是受严格调控的过程。发育的果实先后经过细胞分离、膨大以及伴随其间的大量代谢过程的变化，最终达到成熟。众所周知植物激素影响果实生长和发育的许多方面。作为对5种经典的激素（生长素，赤霉素，细胞分裂素，脱落酸和乙烯）的补充，我们正在认识一些在果实发育中发挥作用的新生长调节子。通过对不同生长时期的果实施加外源激素和内源激素的定量分析，已经为我们揭示了这些因子在果实发育中的重要作用。本文中，我们以番茄为模式生物，对激素控制果实发育的相关研究进行综述。     

Effect and Functional Mechanism of the Action of Exogenous Gibberellin on Flowering of Peach

This study was conducted to assess the effect of gibberellin and its possible mechanism of action on peach flower formation. At flower induction, 100 mg L^-1 of gibberellic acid 3 （GA3） was sprayed on the leaves of peach [Prunus persica （L.） Batsch.] cv. Bayuecui. Using anatomy, immunohistochemistry, and semi-quantitation, the in situ distribution of GAs and the expression of the key genes involved in peach flower formation in the apical meristem were studied during flowering differentiation. The results showed that induction of flowering in the Bayuecui peach occurred prior to 10 July in Beijing, China. Flower induction and further differentiation of the peach flower organs were significantly inhibited by leaf-spraying of GA3 at a concentration of 100 mg L^-1 during the induction stage. The flowering rate was only 11.67% after treatment. The distribution of GA1 in the apical meristem varied during the process of flower bud differentiation. From 13 June to 25 July, the GA1 signal from control plants was detected mainly in the vascular bundles at the base of the flower buds. No GA1 signal was detected in the apical meristem. After treatment with GA3, the distribution was similar to that of the control from 13 June to 3 July. On 13 July, a GA1 signal was detected in the apical meristem accompanied by an increase in the GA1 signal in the vascular bundles at the base of the flower buds. The GA1 signal weakened significantly in both the vascular bundles and the apical meristem on 25 July. The expression of the genes PpLEAFY and MADS6 in flower buds could be detected only on 10 October in the GA3-treated plants. The critical period for flower induction of Bayuecui peach in Beijing was in early July, during which time, leaf-spraying with 100 mg L-1 GA3 could effectively inhibit flower induction and further differentiation of the flower buds. GA1 in the gibberellin family was the suppressor for flower induction in peach. Its action was affected by the stage of flower bud differentiation. Expression of the key gen