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番茄筋腐病的发病机制和防治方法 总被引：2，自引：1，他引：1
日本的番茄筋腐病是大棚番茄长期连作而引起的。最初叫做“黑条病”,主要指褐变型的筋腐病。由于连作程度的增加,同时栽培上采用了抗褐变型的品种,使“白条病”的白变型筋腐病增多,是在低温,光照不足时期栽培番茄的最大障害。 一、番茄筋腐病的分类 番茄筋腐病过去一直没有定名,这是由于在同一栽培条件下,发病果实中有细胞组织褐变型的和果实糠心、细胞组织白变型两种。 关于褐变型的筋腐病,根据症状类型,病理解剖结果,可以进一步分为条腐病(维管束褐变症)、内部褐变症和壁面褐变症三种。白变型的筋腐病,有白条或黄条、金条等症状,果实糠心,… 相似文献
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番茄筋腐病又称条腐病,是与番茄裂果病齐名的两大生理病害之一.番茄筋腐病在保护地番茄生产中发病较为严重,发病时期多在果实膨大期. 相似文献
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对番茄果实主要生理障碍进行细致阐述，详细说明了番茄脐腐病、番茄筋腐病、番茄空洞果、番茄裂果和番茄日烧病的发病症状、发病原因和防治方法，以期对生产有所指导。 相似文献
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番茄筋腐病又称筋腐果或青皮果，主要危害番茄果实，近几年在陕西宝鸡普遍发生，特别是2005年，由于当年7～8月份的连续阴雨造成的高温高湿天气，使秋延后番茄筋腐病严重发生，导致约20％的病果被倒掉，给菜农造成较大的经济损失。 相似文献
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<正>番茄筋腐病又称条腐病、黑筋病、铁皮果等是保护地番茄上常发生的一种危害果实的生理性病害,近年来随着我地冬暖式大棚番茄栽培面积的进一步扩大,番茄筋腐病有加重发生的趋势,发病严重的大棚的病果率可达20% 相似文献
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1番茄筋腐病番茄筋腐病又称条腐病或带腐病,是番茄的一种重要生理性病害。保护地栽培中发生重,发病严重时病果率可达60%以上,降低产量和品质。1.1症状:多在第1、2穗果上发生。果实外形尚好,但维管束部位不转红;发病重的果肉维管束变褐坏死,大大降低商品价值。 相似文献
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"昌红一号"是以F90为母本,以H28为父本杂交选育而成的早中熟、大红中果型番茄F_1杂交种。属无限生长型,生长势中等,叶量中等,节间适中;第1花穗着生节位为第6～7节,坐果率高,果实整齐,转色均匀;高、低温条件下均能正常坐果,果实正圆形,果色光艳,不易裂果,较耐贮运;果形指数0.85,平均单果质量145 g左右;抗番茄黄化曲叶病毒病(TYLCV)、花叶病毒病(ToMV)、叶部病害、茎基腐病;连续坐果能力强,产量高,平均667 m~2产量在8 000 kg以上。适合长季节保护地栽培,特别适宜秋冬保护地及病毒病高发区栽培。 相似文献
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The deposition of calcium in tomato fruit grown at a range of salinities (electrical conductivities between 3 and 17 mS cm“1), with or without IAA-transport inhibitor treatment, was investigated. Calcium (Ca) in the flesh and pulp of tomato fruit was sequentially separated into four fractions: FI soluble in water, FII soluble in 2.5 mol dm“3 NaCl, Fill soluble in 2% acetic acid and FIV soluble in 5% HC1. In mature fruit, grown at 3 mS cm“1, more than half the Ca was in FI, and the Ca concentration was higher in the pulp than in the flesh. FII and Fill each contained less than 20% of the Ca, and the Ca concentration was higher in the flesh than in the pulp. In general, salinity reduced the concentration of Ca in all fractions and slightly altered the proportional distribution of Ca in fractions. The deposition of calcium in young fruit, grown at 3 and 8 mS cm“1, was highest in FII in the flesh or in FI in the pulp. When 45Ca was supplied to detached fruit, the patterns of45 Ca distribution in the fractions were similar to that of total Ca. Treatment with an IAA-transport inhibitor, CME, reduced both the uptake and transport of 45Ca. While the amount of 45Ca in all fractions was significantly reduced by CME, the proportional distribution of 45Ca among fractions was not affected substantially. Although the proportional deposition of Ca in different fractions was not significantly affected by either salinity or CME, further reduction of the intrinsically low deposition of Ca in FII of distal pulp caused by these factors may be the cause of blossom-end rot in tomato fruit. 相似文献
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两株酵母菌对番茄采后病害的防治效果 总被引：1，自引：0，他引：1
拮抗菌L-1-6是从辣椒果实表面附生微生物中分离筛选出的对番茄早疫病(Alternaria solani)有拮抗作用的酵母菌;拮抗菌H-2是从李果实表面附生微生物中分离筛选出的对番茄根霉果腐病(Rhizopus nigricans)有拮抗作用的酵母菌。用浓度为1.0×106cfu·mL-1的拮抗菌悬浮液浸泡绿熟期海粉901果实2min,常温贮藏20d,结果表明,拮抗菌L-1-6和H-2悬浮液分别处理番茄果实均能延迟病害发生,分别降低腐烂率40.0%和18.3%,降低失水率0.56%和0.53%,降低总损耗43.2%和21.4%。等体积混合浓度为1.0×106cfu·mL-1的拮抗菌L-1-6+H-2悬浮液处理果实,表现为增加腐烂的发生。用两种拮抗菌悬浮液分别处理番茄果实对果实营养成分含量和感官品质没有不良影响。 相似文献
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甜瓜细菌性软腐病病原鉴定 总被引：2，自引：0，他引：2
近年来,浙江义乌等地的甜瓜(CucumismeloL.)果实上普遍发生一种外观褐色小斑,果肉水渍状腐烂现象,局部田块发病率高,损失严重。为确定病原,从病果上分离到4个细菌菌株,分别定名为M1、M2、M3和M4。烟草过敏性反应和致病性测定表明M2和M4不具致病性,而M1和M3在烟草上能引起典型的过敏性坏死反应,接种甜瓜24h内即导致果实的明显腐烂,所引起的腐烂症状与田间发病果实一致。对M1和M3进行培养性状、革兰氏染色、形态学和鞭毛观察、马铃薯薯块腐烂试验,以及16SrRNA基因测序和比较,结果证明该病害是由软腐欧氏杆菌软腐亚种Erwiniacarotovorasubsp.carotovora引起。 相似文献
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由尖孢镰刀菌FORL引起的番茄颈腐根腐病是近年来最具破坏性的番茄土传病害之一,该病害严重威胁我国设施番茄的安全生产。综述了番茄颈腐根腐病病原菌生物学特性、发病规律、为害特征及抗病育种等相关研究进展,以期为我国番茄颈腐根腐病的抗病育种提供借鉴。 相似文献
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A.J.A.A. Athayde P.D.L. de Oliveira I.C.D. Guerra M.L. da Conceição M.A.B. de Lima N.M.O Arcanjo 《The Journal of Horticultural Science and Biotechnology》2016,91(6):582-591
This study evaluated the efficacy of the combined application of chitosan (CHI) and Cymbopogon citratus (Dc. Ex Nees) (lemongrass) essential oil (CCEO) to control Rhizopus stolonifer in fresh tomato (Lycopersicon esculentum Mill.) fruit at room temperature (25°C) storage. The effects of the treatment (CHI and CCEO) on some quality characteristics of the fruit, namely weight loss, firmness, soluble solids, titratable acidity, pH, ascorbic acid, color, and sensory acceptability were also assessed. The minimum inhibitory concentrations of CHI and CCEO against R. stolonifer were 8 mg/mL and 5 µL/mL, respectively. Subinhibitory concentrations of CHI and CCEO (CHI 4 mg/mL, CCEO 1.25 µL/mL), alone and in combination, inhibited fungal spore germination and damaged spore membrane integrity. The CHI-CCEO coating decreased the severity of Rhizopus soft rot in tomato fruit; however, the coating more strongly delayed the infection when the fruit were artificially contaminated after coating application. The application of the coating preserved the general quality of tomato fruit as measured using a variety of physicochemical and sensory attributes. These results indicate that coatings composed of CHI and CCEO could represent promising postharvest treatments to inhibit Rhizopus soft rot in tomato fruit. 相似文献