Current Zoology(formerly Acta Zoologica Sinica),   Feb. 2007, 53(1): 167 - 174
Title: Morphological variation in Xiphinema insigne populations from different regions of China
Authors: WU Yang, ZHANG Yan, YAN Xiao-Ning, ZHENG Jing-Wu
 C o l l e g e   o f   A g r i c u l t u r e   a n d   B i o t e c h n o l o g y ,   Z h e j i a n g   U n i v e r s i t y ,   H a n g z h o u   3 1 0 0 2 9 ,   C H I N A 
Abstract:
Specimens of Xiphinema spp. were extracted from 1599 soil samples collected from 14 provinces of China. Out of these samples, 63 Xiphinema insigne populations were identified from 10 provinces, including Beijing, Shandong, Shanxi, Hebei, Henan, Sichuan, Zhejiang, Fujian, Hainan, and Chongqing. This species is the predominant one in the genus Xiphinema occurring in China, and accounted for 19.0 % of the Xiphinema populations found in this study. Morphometrical comparisons revealed great variation between intra-species populations of X. insigne from different geographic regions of China. All the major morphometrics, length of odentostyle, length of tail and V value are overlapping, and have no relativity with the species and populations. Our results disprove the presence of two forms of X. insigne, indicum-form and insigne-form. Here we report for the first time, the distribution of X. insigne in Hainan province and the presence of the first stage juvenile in China[Acta Zoologica Sinica 53(1):  167– 174, 2007].

Keywords: Xiphinema insigne,Juvenile, Morphometrics, Morphological variation

*Correspondence should be addressed to ZHENG Jing-Wu (E-mail:jwzheng@zju.edu.cn).

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