臺灣落花生根瘤線蟲Meloidogyne arenaria 之鑑定
Other Title
Identification of Meloidogyne arenctria on Peanut in Taiwan
Journal
中華農業研究
Journal Volume
29
Journal Issue
1
Pages
47-53
Date Issued
1980-03-06
Date
1980-03-06
Author(s)
程永雄
杜金池
Y.H. Cheng
C.C. Tu
Abstract
落花生根瘤線蟲病近年來在雲林地區逐漸成為重要之花生病害。其病原線蟲經鑑定為Meloidogyne arenaria ( Neal , 1889 ) Chitwocd , 1949。其成熟雌蟲之陰門模紋型（Perineal pattern）通常為卵圓型，但其長軸卻與側線（Lateral line）平行。特徵為拱弧（Arch）較低而圓，由平整條紋（Smooth striae）所構成，背部及腹部條紋（Dorsd and ventral striae）在側線處成角度之相會，側線處有許多雜亂之短條紋，肛門上方無點狀物（Punctation）。雌蟲排泄孔（Excretory pore）約位於頭端後方2 倍口針長之處。本線蟲二齡幼蟲體長1.440 mm 二－( 0.37 ～• 0.49 mm）。侵染落花生後，引起植株矮小、黃化及提早落葉等病徵。根部被感染則產生類似串珠狀之根瘤，但不像M . hapla 會自根瘤處再生放射狀之側根。豆莢及莢柄被侵害，則引起腫狀瘤而畸型。M. arenaria 對蕃茄（盛岡7 號）及小鳳西瓜也有病原性，會引起腫瘤，但對棉花（Stoneville 7A）則無病原性。
Peanut root-root-knot nematode disease has become an important and has threated to peanut production in Yien-lin growth area recently. The causal agent was identified as Meloidogyne arenaria (Neal, 1889) Chitwood, 1949. Perineal pattern of M. arenaria shows oval-shaped with longer axis in the lateral direction. Arch rounded to low is composed of smooth striae. There are numerous short disordered striae in the lateral fields where dorsal and ventral striae meet at an angle. Perineal pattern of this species is never found punctation above the anus. Female excretory pore is at about 2 stylet lengths posterior to apex of head. Median length of larvae of this species is 0.440 mm (0.37-0.49 mm).
The 2nd stage larvae infect peanut, causing stunting, yellowing, and early falling of leaves. Root systems invaded by this spicies cause root knots in chains, but rarely have lateral rootlets grown directly from gall as those caused by M. hapla. Shells and stems infected by M. arenaria cause galls and become malformed. M. arenaria also causes galls and reproduces on tomato (Sheng-kang No. 7) and watermelon (Honty baby), but not on cotton (Stoneville 7A).
Publisher
農業試驗所
Type
journal article
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