Different Fresh-keeping Effects of Sugar, Aspirin and Vc on Cut Rose Flowers

[Objectives] This study was conducted to develop environmentally-friendly effective vase solutions for cut rose flowers convenient for ordinary household use. [Methods] The vase life, flowering stage, flower diameter variation, petal water content, and soluble protein and malondialdehyde contents were determined on cut rose flowers regularly during the vase period, to study the fresh-keeping effects of the vase solutions prepared from such three components as sugar, aspirin and Vc according to L9(33) orthogonal table design on cut rose flowers during the vase period. [Results] 20 g/L white granulated sugar+460 mg/L aspirin+50 mg/L Vc was the best combination in this study. [Conclusions] This study provides a reference for the research on the fresh-keeping vase solutions of household cut rose flowers.

Physiological Dynamics and Transcriptomic Analysis of Cut Roses‘Carola’Treated with KNO_(3)

The consumption of cut roses(Rosa hybrida)has always ranked first in the world.However,it is vulnerable to rapid petal and leaf wilting due to leaf stomatal water loss,which seriously affects its ornamental quality and economic value.Stomatal movement,a key in plant physiological processes,is influenced by potassium and nitrate.Advancing comprehension of its physiological and molecular mechanism holds promise for preserving the freshness of cut roses.This study observed the impacts of different concentrations of KNO_(3) vase treatments on stomatal opening and water loss in cut rose‘Carola’leaves,as well as their transcriptional responses to KNO_(3).Water loss rates were influenced by KNO_(3) concentrations,with the 25 and 75 mmol/L treatments exhibiting the highest water loss rates.The stomatal aperture reached its widest value when treated with 75 mmol/L KNO_(3).Transcriptional sequencing analysis was performed to identify differentially expressed genes(DEGs)of which 5456 were up-regulated,and 6607 were down-regulated associated with photosynthesis,starch and sucrose metabolism,metabolic pathways,plant-pathogen interaction,plant hormone signal transduction,and related pathways.246 DEGs were selected related to response to KNO_(3) treatment,of which gene ontology(GO)enrichment were nitrate and terpenoid metabolism,ion transport,and response to stimuli.Further heatmap analysis revealed that several genes related to nitrate transport a metabolism,K+transport,vacuoles,and aquaporin were in close association with the response to KNO_(3) treatment.Weighted gene co-expression network analysis(WGCNA)revealed that hub genes,including LAX2,TSJT1,and SCPL34 were identified in turquoise,black,and darkgreen module.Transcription factors such as NAC021,CDF3,ERF053,ETR2,and ARF6 exhibited regulatory roles in the response to KNO_(3) treatment under light conditions.These findings provide valuable insights into the physiological and molecular mechanisms underlying the response of cut rose leaves to KNO_(3) treatment.

Effects of Nine Kinds of Household Vase Solutions on Fresh-keeping Effect of Lilium Cut Flowers

[Objective]The paper was to study the effects of nine kinds of household vase solutions on fresh-keeping effect of Lilium cut flowers.[Method]Using Lilium"Sorbonne"as the material,nine kinds of household vase solutions were prepared by edible white granulated sugar,white vinegar,akafen powder and vitamin C tablets,respectively.The morphological and physiological indexes of Lilium cut flowers,including vase life,ornamental grade,flower diameter,fresh weight of flower branches,water balance value,soluble protein content and MDA content of petals,were observed,and the effects of nine kinds of household vase solutions on fresh-keeping effect of Lilium cut flowers were studied.[Result]The household vase solution F8(20 g/L white granated sugar+1 packet/L acafen powder+2 tablets/L vitamin C tablets)had the best fresh-keeping effect on Lilium cut flowers,which was beneficial to prolong the vase life and improve the ornamental value of Lilium cut flowers.[Conclusion]The household vase solution of Lilium cut flowers is optimized,which is not only environmentally friendly but also convenient for ordinary families.

Fresh-keeping Effects of Different Concentrations of 6-BA and B9 on Carnation Cut Flower

Using sucrose, citric acid and vitamin C as the basic liquid, different concentrations of 6-BA and B9 preservatives were added, and the carnation variety ＇ Master＇ was treated. The results showed that the formula of 3% sucrose ＋ 50 mg/L citric acid ＋ 600 mg/L vitamin C ＋ 20 mg/L 6-BA could effectively maintain the water balance of the cut flower, prolong the vase life of the cut flower to 16.4 d, and maximize the flower diameter and the crown height.

WATER CUTTING OF CHINESE ROSE-BETTY PRIOR

The rooting law of modem Chinese rose variety -Betty prior at different conditions was studied dwhg 1995-96. The suhable temperaure for initiating healing organization which is a prempuisite for rooting was aboot 21℃. The experimedl result showed the percent root was not di odly related to healing organtheion, bul related to the cnding' diamde. The coding diamoter should be 4-5 mm in order to keep a higher rooting tate in water cnding Percat root of water cutting haddired relations with temperature . The most suitable temperatur for Chinese rose rooting was in rangeof 20 ~ 25℃.

Nutrients Deficiency and Excess Phenomena of Cut Rose and Their Physiological Significances

On the basis of a brief introduction of essential major dements and trace dements for cut rose, the physiological effect and deficiency and excess phenomena of major elements including nitrogen, phosphorus, potassium, magnesium, calcium, sulfur and trace dements including zinc, molybdenum, boron, iron, manganese, copper were mainly described; the main factors influencing nutrients absorption of cut rose were summarized, in order to provide a reference for the reasonable fertilization of cut rese.

On the Economic Benefits of Cut Roses Planting in Sanya

The study aims to promote the off-season cut roses industry in Hainan Province to the whole island and even whole China. Based on the production data in latest three years,the theory of time value was introduced to analyze the economic benefits of cut roses planting in South Hainan. According to the research findings,the cut roses create a NPV of $22 000 /667m2 with a net NPV rate of 34. 24%,an internal rate of return of 76. 36%,and a dynamic payback of 1. 05,bringing the farmers a revenue of $7 200 /667m2 per capita per year. Since the largescale planting of cut roses needs a high investment,it is suggested that the government should increase its support for the cut rose industry.

蘸水处理对月季切花保鲜效果的影响

为分析蘸水处理对月季切花的保鲜效果,以‘卡罗拉’月季切花为试材,分别进行蘸水处理和不蘸水处理,于4℃下贮藏,并测定其腐烂指数、萎蔫指数、花朵直径、失重率、呼吸强度、丙二醛(MDA)含量。冷藏试验结果表明,蘸水处理能够降低鲜切花在冷藏过程中膜脂过氧化产物MDA含量和鲜切花呼吸代谢的速率,从而延缓衰老,延长鲜切花的贮藏时间。瓶插试验结果表明,蘸水处理在冷藏15 d后瓶插期间最大花径达6.90 cm,大于不蘸水处理组的6.09 cm,蘸水处理可有效延缓鲜切花腐烂指数、萎蔫指数和失重率的上升,抑制月季切花贮藏和瓶插期间品质的下降。综上,蘸水处理对月季切花具有较好的保鲜效果。本研究结果可为延长‘卡罗拉’月季切花的瓶插寿命及保鲜剂研究提供理论依据。

温室无土栽培切花月季生长发育预测模型及其验证

【目的】建立一个可以预测温室无土栽培切花月季生长发育时期及收获期的模型,为切花月季生产过程中的环境因子调控提供理论支持。【方法】以生长周期差异明显的3个主栽切花月季品种‘洛神’‘欢乐颂’和‘粉红雪山’为试验材料,无土栽培种植于曲靖市马龙区的塑料温室大棚中,于2021—2022年收集5期的生长发育数据和同期的光照辐射及温度数据。通过分析切花月季的生长周期特征,构建基于生理辐热积(Physiological product of thermal effectiveness and PAR,PTEP)的切花月季生长发育时期预测模型,并使用独立数据对构建的生长模型进行验证。【结果】切花月季在修剪到萌芽、萌芽到现蕾以及现蕾到收获这3个生长发育阶段所需的生理辐热积分别为22.08、29.41和38.89 MJ/m^(2);本研究所构建的切花月季生长发育时期预测模型基于生理辐热积,在切花月季的各个生长发育阶段,模型的模拟预测值与实测值表现出良好的一致性。1∶1线性回归标准误差(RMSE)分别为0.7、6.5和9.4 d,显示出模型预测的准确性。【结论】通过考虑光照辐射与温度的综合影响,构建的模型能够预测切花月季在不同生长发育阶段的时间点,以及切花产品的收获期。基于该模型,种植者可以更精准地调节温室内的光照与温度,从而在一定程度上调控切花月季产品的生产周期。研究结果将为温室无土栽培切花月季的生产提供科学依据,同时也将为种植者制定切实可行的生产和技术支持。

切花月季保鲜技术最新研究进展

目的本文综述切花月季的贮藏与瓶插保鲜技术的应用与进展以及未来发展方向,以期为后续研究提供理论基础。方法分析切花月季的市场需求,概述物理和化学保鲜技术,包括控温贮藏、调湿贮藏、化学保鲜剂等。结果合适的物理和化学保鲜技术能有效延长切花月季的贮藏和瓶插期。但单一技术效果有限,存在成本、处理时间等问题。结论综合应用多种保鲜技术及探索新型保鲜剂是切花月季保鲜研究的未来发展方向。

不同生根试剂对微型盆栽月季扦插生根的影响

微型盆栽月季具有重要的观赏价值。目前在国内栽培生产中,微型盆栽月季种苗工厂化生产程度低、质量良莠不齐,严重影响了其成品花的商品价值。研究微型盆栽月季的扦插繁育技术以提高微型盆栽月季种苗的质量在微型盆栽月季栽培生产中具有重要的实践意义。为分析不同生根试剂对4个微型盆栽月季品种扦插生根的影响,设置不同水平的中蔬根保201、吲哚-3-丁酸(indole-3-butyric acid,IBA)、萘乙酸(1-naphthlcetic acid,NAA)、2,4-二氯苯氧乙酸(2,4-Dichlorophenoxyacetic acid,2,4-D)溶液以及部分试剂组合为生根试剂处理,并以清水(CK1)和公司常用试剂处理(CK2,由紫玉花卉产业有限公司提供的生根粉剂)为对照,利用主成分分析法对各品种扦插苗根系性状指标进行综合评价,以筛选扦插繁殖的最佳生根试剂。结果表明,在单一生根试剂处理中,CK2处理在所有品种均表现较优,能有效促进根系生长;另外,IBA和中蔬根保201溶液对扦插苗根系的生长发育也具有很好的促进作用,且它们的组合处理对所有供试品种的扦插苗根系生长发育也均有很好的促进效果,优于CK2。其中,0.67 mL·L^(-1)的中蔬根保201溶液与1500 mg·L^(-1)的IBA溶液的混合液处理所有品种扦插苗的根系生长情况都非常优异。

不同贮藏温度对‘卡罗拉’月季切花保鲜效果的影响

为明确‘卡罗拉’月季切花适宜的贮藏温度,研究比较了在0、4、8℃贮藏下切花的花青素含量、可溶性蛋白含量、总酚含量、总黄酮含量、呼吸强度、乙烯生成速率、丙二醛含量和相对电导率的变化,并测定了切花最大花茎、腐烂指数、瓶插寿命等感官指标,分析不同温度条件下切花保鲜效果的差异。结果表明:相较于0℃和8℃,4℃贮藏能够在一定程度上抑制过高温度导致的切花失水现象及过低温度导致的冷害现象,降低腐烂指数,延缓花青素、可溶性蛋白、总酚和总黄酮含量的减小;贮藏20 d时,0、4、8℃贮藏的切花呼吸强度分别为587.66、508.42、575.49 mg·kg^(-1)·h^(-1),0℃和8℃是4℃的1.15倍和1.13倍;同时4℃能较好地抑制丙二醛含量和相对电导率的上升。利用SPSS对测定指标进行评分,评分结果表明,不同贮藏温度对‘卡罗拉’月季切花综合保鲜效果排序为4℃>0℃>8℃,4℃贮藏的切花品质最佳。综上,‘卡罗拉’月季切花的适宜贮藏温度为4℃,此温度下贮藏的切花外观、营养和生理品质最佳,切花贮藏寿命更长。

不同采收期“卡罗拉”月季切花贮藏效果比较

目的为了延长月季切花“卡罗拉”的贮藏期,选取合适的采收期进行贮藏至关重要。方法分别以提前4 d采收(1级)、提前2~3 d采收(2级)、提前1 d采收(3级)、当天采收(4级)的月季切花“卡罗拉”为试材,于4℃下贮藏20 d,定期观察贮藏及瓶插期间鲜切花品质的变化。结果与其他采收期月季切花相比,2级月季切花乙烯生成速率偏低,贮藏15 d前,2级月季切花在一定程度上呼吸强度较低,丙二醛含量整体呈现较低趋势。在贮藏20 d瓶插8 d时,2级月季切花花朵直径偏大,可维持花朵较高的开放程度,花朵萎蔫指数、腐烂指数、质量损失率仅为40.66%、82.22%、11%,均低于其他采收期的月季切花;色差中L*值较高,b*值较低,表明2级月季切花颜色较为鲜亮,有效延缓了黄化现象。结论经过1d物流运输及20 d左右的贮藏条件下存放时,提前2~3 d采收(2级)的月季切花可维持较好的品质及观赏价值。

切花月季贮藏保鲜研究进展

切花月季是世界四大切花之一,具有很高的商业价值,因其贮藏保鲜期、货架期和瓶插寿命均较短,严重制约了月季切花产业的发展。文中针对切花月季贮藏保鲜的研究现状,分析了切花月季贮藏保鲜的影响因素,总结了切花月季贮藏保鲜的方法,并对切花月季贮藏保鲜未来发展方向进行了展望。

基于改进YOLOv8s的玫瑰鲜切花分级方法

[目的/意义]针对当前玫瑰鲜切花分级仍依赖人工进行简单分级,造成效率低、准确率低等问题,提出一种新的模型Flower-YOLOv8s来实现玫瑰鲜切花的分级检测。[方法]以单一背景下单支玫瑰花的花头作为检测目标,将鲜切花分为A、B、C、D四个等级,对YOLOv8s(You Only Look Once version 8 small)模型进行了优化改进。首先,构建了一个全新的玫瑰鲜切花分级检测数据集。其次,在YOLOv8s的骨干网络分别添加CBAM(Con⁃volutional Block Attention Module)和SAM(Spatial Attion Module)两个注意力机制模块进行对比实验;选择SAM模块并对其进一步优化,针对模型轻量化需求,再结合深度可分离卷积模块一起添加到C2f结构中,形成Flower-YOLOv8s模型。[结果和讨论]从实验结果来看YOLOv8s添加SAM的模型具有更高的检测精度,mAP@0.5达到86.4%。Flower-YOLOv8s相较于基线模型精确率提高了2.1%,达到97.4%,平均精度均值(mAP)提高了0.7%,同时降低了模型参数和计算量,分别降低2.26 M和4.45 MB;最后使用相同的数据集和预处理方法与Fast-RCNN、Faster-RCNN、SSD、YOLOv3、YOLOv5s和YOLOv8s进行对比实验,证明所提出的实验方法综合强于其他经典YOLO模型。[结论]提出的基于改进YOLOv8s的玫瑰鲜切花分级方法研究能有效提升玫瑰鲜切花分级检测的精准度,为玫瑰鲜切花分级检测技术提供一定的参考价值。

浅谈北方月季棚内扦插繁殖及养护

从月季生长性质入手,介绍了月季扦插准备、扦插、扦插后护理的各个步骤,并对月季成形后的长期养护进行详述,以期为北方月季棚内扦插繁殖的操作提供参考。

纳米银和 1-MCP 处理对月季切花的保鲜作用

研究了纳米银和1-MCP处理对月季切花‘卡罗拉’瓶插寿命和花径、相对鲜重(RFW)和瓶插液吸收(VSU)、相对叶绿素含量和丙二醛(MDA)含量、相对电导率以及抗氧化能力的调节作用。结果表明:与对照相比,纳米银和1-MCP单独处理与组合处理均能显著提高花瓣还原力,提升抗坏血酸过氧化物酶(APX)、超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性,降低花瓣中丙二醛(MDA)含量和叶片中相对电导率,并抑制叶绿素含量的下降。与纳米银和1-MCP单独处理相比,纳米银和1-MCP组合处理对延长月季切花瓶插寿命、增大切花花径、促进切花吸水、维持切花的质膜稳定性和提升切花的抗氧化能力更为有效。总之,纳米银和1-MCP组合处理可通过维持切花的水分平衡和质膜稳定性、提高切花的抗氧化能力、降低切花的膜脂质过氧化水平来延长月季切花的瓶插寿命。

扦插成活率低月季品种组培快繁体系研究

以2个扦插成活率低的月季品种红双喜和金玛丽为代表,植株健壮枝条饱满而未萌发的侧芽为外植体,进行组培快繁研究。通过比较萌芽率和生根率,筛选出最适宜的启动培养基和生根培养基。结果表明,红双喜最适启动培养基是MS+3 mg/L 6-BA+0.2 mg/L NAA,萌发率为85.7%;金玛丽最适启动培养基是MS+2 mg/L 6-BA+0.2 mg/L NAA,萌发率为83.33%。红双喜的最适生根培养基是1/2 MS+0.5 mg/L IBA+0.2 mg/L NAA;金玛丽的最适生根培养基是1/2 MS+0.5 mg/L IBA+0.1 mg/L NAA。

基于大数据的玫瑰鲜切花市场趋势预测与决策

本研究深入探讨了大数据在玫瑰鲜切花市场趋势预测与决策中的应用,突出其在现代农产品市场分析中的重要性。在全球范围内,作为花卉产业的重要部分,玫瑰鲜切花市场不仅具有经济价值,同时也承载着丰富的文化意义。面临着供应链复杂性、保鲜期限短暂及消费者偏好多变等挑战,市场趋势预测与决策显得尤为困难。通过分析海量销售数据、社交媒体反馈以及气候变化信息,大数据技术揭示了市场趋势、消费者行为和潜在风险,提供了前所未有的精确度和效率。研究指出,这种技术在预测市场需求、优化供应链管理和制定定价策略方面具有显著作用。此外,本文也探讨了利用大数据分析玫瑰鲜切花市场的重要研究价值和实际应用前景,强调了在快速变化的市场环境下,如何利用大数据技术深入理解和应对市场的挑战。研究结果不仅为玫瑰鲜切花市场提供了宝贵的洞见,也为其他花卉市场的研究提供了参考,展示了大数据在农产品市场分析中的广泛应用潜力。

木霉菌对切花月季根际、根内微生物多样性影响及霜霉病防效的研究

为探究生物菌剂木霉菌对切花月季病害的防控效果,在月季苗期施用300倍木霉菌可湿性粉剂。结果表明,施用木霉菌可促进和丰富月季根际、根内的真菌物种种类分布,对土壤中真菌及根内微生物多样性影响较大,OTU个数增加,特别根际真菌指数Shannon、Simpson及PD指数均高于清水对照和化学药剂甲基硫菌灵,说明施用木霉菌后使土壤真菌种类更加丰富,而且提高了一些有益菌的丰度。从对月季霜霉病的防治效果来看,300倍木霉菌及800倍50%甲基硫菌灵3次施药后相比清水对照均表现出显著差异,木霉菌防病和治疗效果达87.35%,比化学药剂甲基硫菌灵防效略高。