Susceptibility of some Australian acacias to the root-knot nematode Meloidogyne java']javanica

被引:8
作者
Duponnois, R
Cadet, P
Senghor, K
Sougoufara, B
机构
[1] UNIV CHEIKH ANTA DIOP, DEPT BIOL ANIM, DAKAR, SENEGAL
[2] DIRECT EAUX FORETS CHASSES & CONSERVAT SOLS, DAKAR, SENEGAL
来源
ANNALES DES SCIENCES FORESTIERES | 1997年 / 54卷 / 02期
关键词
Acacia spp; Meloidogyne [!text type='java']java[!/text]nica; Rhizobium; pathogenicity;
D O I
10.1051/forest:19970205
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
The susceptibility of seven Australian acacias (Acacia hilliana, A holosericea, A lysiphloia, A. mangium, A sclerosperma, A trachycarpa and A tumida) to Meloidogyne javanica has been studied with different rates of nematode inoculums (100, 500 and 1000 juveniles per pot). All these Acacia species are susceptible to the root-knot nematode. A sclerosperma, A hilliana, A holosericea and A mangium are better hosts for M javanica than A trachycarpa, A tumida and A lysiphloia. The root-knot nematode only inhibits the development of A holosericea and stimulates the growth of A tumida. A negative effect of the nematode has been measured with the nitrogen fixation with A mangium and A holosericea but, on the contrary, M javanica stimulates this symbiosis with A tumida and A hilliana. In this case. it can be calculated that 1 mg of dry weight of nodule induces 98 and 88 mg of shoot dry weight respectively.
引用
收藏
页码:181 / 190
页数:10
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