摘要
为了比较根结线虫的发育，纯种的南方根结线虫（Ｍｅｌｏｉｄｙｎｅ ｉｎｃｏｇｎｉｔａ）和爪哇根结线虫（Ｍ．ｊａｖａｎｉｃａ）用接种一解剖等方法进行研究．结果其新鲜卵块中的卵多集中在第２～６天的时间段内孵出，滞育率均低于１．０％，分别有６．８％和１０．６％在孵化过程中死亡．２８℃ 时其胚胎发育时间分别为８．５～９． ５ ｄ（９． ２ ｄ）和 ９． ０～１０．０ ｄ（９． ６ ｄ）．初侵入很内的根结线虫幼虫有重新侵入的能力．完成寄生阶段发育前者在平均 １７． ２℃下经 ４４ ｄ（７５６． ４ Ｄ℃）而后者在平均 １９． 1℃ 下需 ４５ ｄ（８５８． ８ Ｄ ℃ ）．根结线虫在不同的寄主上发育程度有较大差异．爪哇根结线虫中有大量雌雄间体出现，间体在形态上有较大变异，其性别分化是在一个较长阶段内完成，由于分化阶段不同，引起间体的发生并决定间体的不同形态．
In order to compare the development of the root-knot nematodes, purebred Meloidogyne incognita and M. javanica were studied by the method of inoculating and dissecting et al. The single egg-masses hatching done within Meloidogyne incoulating and M. javanica demonstrated that most juveniles hatched concentrated during 2nd day-8th day. Latent eggs are no more than 1. 0 %, dead eggs from M.incognita and M. javanica are 6.8% and 10.6%, respectively. The embryonic development under 28℃, M. incognita and M. javanica requires 8.5-9.5 (9.2) days and 9.0-10.0(9.6) days,espectively. The juveniles inside fresh roots are possibly capable of an other invasion. When average temperature is 17.2℃, M.incognita's postinfection development was complete first at 44th day (756. 7 D℃), whereas M. javanica finished its postinfection development within 45 days (858. 8 D ℃) at 19. 1℃. Many intersexs were found in M. javanica males. The morphology of intersexs are variable. The sex of M.javanica is decided within a fairy long time. Mature eggs of M. incognita are smaller than unmatures. In the uteri, eggs change its color and structure.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2000年第4期537-546,共10页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金!(3942206)
国家"九.五"科技攻关!(96 C 01-02-02)
福建省自然科学基金
福建省经济发
关键词
南方根结线虫
爪哇根结线虫
发育
雌雄间体
积温
Meloidogyne incognita, Meloidogyne javanica
life-cycle
intersex
accumulate temperature
