TABLE CONTENTS

oot-knot nematode numbers in plants from the other five F 2 populations were also generally
low, the majority of these plants maintained more than 100 root-knot nematodes per 50 g
roots. Development of root-knot nematode-resistant maize germplasm will benefit local
producers by minimising yield losses as well as by keeping root-knot numbers below damage
threshold levels in cropping systems.
Survey of Plant Parasitic Nematodes and Evaluation of Germplasm
Sources Resistance to Root-knot Nematode on Banana in China
Liu, Z. (1,2), J. Huang (2), D. Peng (3) X. Lu (2), B. Qing (1), P. Pan (2), G. Lu (2), B.
Huang(4), J. Liu (5)& G. Li (2)
(1) Institute of Plant Protection, Guangxi Academy of Agricultural Sciences. Daxuexilu
No.174,Nanning,Guangxi, 53000;(2)Agriculture college,Guanxi University, Nanning, 530005;(3)
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese
Academy of Agricultural Sciences, Beijing 100094, China; (4)Fruit Tree Institute,Guangdong Academy of
Agricultural Sciences, Guangzhou,510640;(5) Nanning Bureau of Science and Technology, Nanning 530022
During the survey of plant parasitic nematode and the germplasm resource of banana, 172
soil and root samples were collected from forty countries of Guangxi, Hainan, Guangdong
and Yunnan, and the nematode species, distribution and population density were investigated.
Nematode identification resulted showed that Meloidogyne spp., Rotylenchulus spp.,
Helicotylenchus spp., Tylenchus spp.., Hoplolaimus spp., Aphelenchoides spp., Rotylenchus
spp. and Aphelenchus spp. were often occurred and isolated from those sample, meanwhile,
Meloidogyne and Rotylenchulus are dominate species and their distribution widely, average
detection rates were 71%, the second was Helicotylenchus,average detection rates were
57%. The maxism population density in the banana rizhosphere was Rotylenchulus, average
population density were 249 nematodes per 100 grams soil,the second is Helicotylenchus
and Meloidogyne. The evaluation of forty-three banana germplasm resources resistance to
root knot nematode- Meloidogyne incognita were conducted. Some middle resistance and
tolerance material were found. We thanks National Nature Science Foundation of China
(30660102) and Science Research and Development Funding of Guanxi Academy of
Agriculture Sciences (2005005 (Z)) for financial support, and thank Prof. Houbing Chen,
South China Agricultural University and Prof. Yeyuan Chen, Resources Institute of Chinese
Academy of Tropical Agricultural Sciences for their technical support.
5 th International Congress of Nematology, 2008 237