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杉木五种斑痣盘菌科病菌的识别及学名商榷 总被引:1,自引:0,他引:1
经过数年调查发现,安徽省境内的杉木上闱盘菌科病原菌共4属5种,它们是杉生长双梭孢菌BifusellacunnighamiicolaKorf&Ogimi,皮特拉克散斑壳LophodermiumpetrakiiDurrian,毁坏舟皮盘菌PloidermadestruensY.R.LinEThou,汉德尔舟皮盘菌P.handelii(Petrak)Y.R.LinetHou和杉木小鞋孢盘菌Soleell 相似文献
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本文报道在云南寄生于云南松PinusyunnanensisFranch.、加勒比松P.caribaeaMorelet、湿地松P.elliottiiEngelm.和火松P.taedaL.上的松褥盘孢菌Doth-istromapiniHulbary形态鉴定。该菌侵染导致松针的衰弱死亡后,进行死体分解的菌是乔松散斑壳Lophodermiumpini-excelsaeAhmad、星状拟盘多毛孢菌PestalotiOpsisstella-ta(Belk.&Curt.)H.T.SumetCao、污斑拟盘多毛孢菌Pestalotiopsisfoedans(Sacc.&Ell.)Stey.,它们加速了死亡部分的分解而使症状更加显得严重。 相似文献
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树脂溃疡病菌(镰孢菌)侵染展叶松和湿地松的感病性树脂溃疡病菌(镰孢菌)Fusariumsubg-lutinansf.sp.pini(简称FSP)在南非森林苗圃引起展叶松Pinuspatula苗木的树脂溃疡病,但在大的松树上还未见有这种症状。用FSP接... 相似文献
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刺槐溃疡病在山东沿海地区发生严重。研究结果表明主要病原菌为尖镰孢(FusariumoxysporumSchlecht.),其次为腐皮镰孢(Fusariumsolani(Mart.)Sacc.)。尖镰孢的小型分生孢子头状,聚生于短的单出瓶梗上,分生孢子椭圆形至腊肠形,7.6~15.4μm×2.5~3.8μm;大型分生孢子镰刀形至纺锤形,3~5分隔,28.2~38.4μm×4.6~5.1μm;厚垣孢子直径8.9~12.8μm。腐皮镰孢的小型分生孢子生于伸长的分生孢子梗上,阔卵形至椭圆形,5.1~10.2μm×2.5~4.8μm,孢子梗长30~80μm;大型分生孢子两端较钝,3~5分隔,20.1~33.3μm×2.6~5.4μm;厚垣孢子直径7.7~10.2μm。菌落生长适温为25~30℃,最适温度28℃;pH范围5~9,最适微酸至中性;碳源以蔗糖和葡萄糖最好,氮源以蛋白胨最好。 相似文献
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芽枝状枝孢霉和蜡蚧轮枝菌防治湿地松粉蚧研究初报 总被引:1,自引:0,他引:1
用芽枝状枝孢霉CladoSporiumcladosporides(Fres.)Derrues和蜡蚧轮枝菌Verticilliumlecanii的孢子液2.5×107/ml和1.7Xl07/ml防治湿地松粉蚧Oracellaacula(Lobdell),试验结果为:在室内,用芽枝状枝孢霉的校正死亡率分别为82.7%和85.o%,用蜡蚧轮枝菌的校正死亡率分别为86.7%和65.9%;林地每公顷喷孢量为33×1012和16.5×1012个孢子防治湿地松粉蚧,用芽枝状枝孢霉的校正死亡率分别为45.2%和81.0%,用蜡蚧轮枝菌的校正死亡率分别为92.7%和99.5%。初步认为上述两种菌在湿地松粉蚧防治上具有应用前途。 相似文献
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经过数年调查发现,安徽省境内的杉木上斑痣盘菌科病原菌共4属5种,它们是杉生小双梭孢盘菌Bifusella cunnighamiicola Korf & Ogimi,皮特拉克散斑壳Lophodermium petrakii Durrian,毁坏舟皮盘菌Ploioderma destruens Y.R.Lin et Hou,汉德尔舟皮盘菌P.handelii (Petrak) Y.R.Lin et Hou和杉木小鞋孢盘菌Soleella cunnighamiae Shao et Zinno.文中描述了各种菌的主要特征,并编制了种的检索表以资识别.对于长期以来杉木落针病病原鉴定中所存在的同物异名问题也进行了商榷. 相似文献
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云南的松针红斑病病原菌形态鉴定 总被引:2,自引:0,他引:2
本文报道在云南寄生于云南松PinusyunnanensisFranch,加勒比松P.caribaeaMorelet,湿地松P.elliottiiEngelm和火炬松P.taedaL.上的松褥盘孢菌Doth-istromapiniHulbary形态鉴定,该菌侵染导致松针的衰弱死亡后,进行死体分解的菌是乔松攻斑壳Lophodermiumpini-excelsaeAhmad、星状拟盘多毛孢菌Pestal 相似文献
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江华弓背蚊Camponotus jianghuaensis Xiao et Wang正模(大型工蚁)TL 9.23, HL 2.48, HW 2.15, HI 87, SL 2.2a, SI 102, CL 0.83, CW 0.85,CI 102, PW 1.32, OD 0.52, PI 61, WL 3.20, ML 2.77。大型工蚁TL 9.23—9.62, HL 2.48—2.56, HW 2.15—2.30, HI 87—90, SL 2.17—2.20, SI 94—102, CL 0.83—0.87, CW 0.85—0.86, CI 101—102, PW 1.32—1.40, OD 0.51—0.52, PI 61, WL 3.20—3.29ML 2.77—2.82。 相似文献
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本文总结了1983年从澳大利亚引进的21个马占相思种源在我国广东、海南两省五个试验点上树高和胸径4年生长变异情况。结果表明,种源间存在极显著不同,呈较强的遗传变异。树高和胸径变异系数分别在0.30和0.40以上,种源方差分量均超过了总表型方差的50%;种源间在不同立地上的生长具有相对稳定性;优良种源主要分布在巴布亚新几内亚、澳大利亚昆士兰州claudie河流域和17.5°S以南低海拔地区。通过优良种源选择可使林分树高、胸径和材积分别获得相当于总体平均值8.54%、9.18%和16.81%以上的遗传增益。 相似文献
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杨树溃疡病经常在幼树干部形成大溃疡斑,造成枝枯和死树。以胸径下病斑面积与树周面积的比值计算的发病程度(X5)与胸径年生长量(Y2)之间呈显著相关。通过回归建立了三个品种不同病情下的生长量模型:美×559:Y2=0.15406+118.52194/(102.9113+X^25)加杨:Y2=-0.4136+278.32113/(133.0115+X^25)小×黑:Y2=-0.08487+110.16972/(131.4548+X^25)三个估算模型经数学检验合理;坐标曲线符合植物病理学原理,可作为该病病情分级和生长量损失估算的参考。 相似文献
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The Pine Shoot Beetle Tomicus piniperda as a Vector of Blue Stain Fungi to Windblown Pine 总被引:1,自引:0,他引:1
After the great gale of 1987, the role of the pine shoot beetle,Tomicus piniperda, as a vector of blue stain fungi to windblownpine in southern England was examined by macerating adult beetlesand culturing the macerate on various agar media. Isolationswere also made from pine tissue associated with beetle galleriesand tunnels. Using data from between three and nine sites, it was found that17 per cent of the overwintered adult beetles were carryingfast-growing Leptographium spp. as they began to construct breedinggalleries in spring 1988. More than half the new generationof adult beetles were contaminated with these fungi when theyemerged in June-July 1988, but this proportion dropped as thelife cycle of shoot-feeding and overwintering progressed. Itaveraged 26 per cent at the time of brood gallery constructionin spring 1989. Isolations made from pine tissue around the galleries also showedchanges in the frequency of blue stain fungi. Of early broodgalleries 25 per cent yielded Leptographium, while the figurefor late galleries was 51 per cent. These results were consistentwith the direct introduction of Leptographium by the parentbeetles into some galleries, and the subsequent rapid hyphalgrowth of the fungus within the tree to colonize tissue adjacentto other galleries. The principal species identified was L. wingfieldii. However,L. lundbergii, L. huntii, L. procerum and an unidentified Leptographiumspecies were occasionally recorded, both on the beetles andin the trees. Graphium species were quite common also. In addition,the black yeasts, Hormonema dematioides and Aureobasidium pullulans,were frequently present, particularly in the pine shoot samples. 相似文献