WANG Xue,DUAN Yu-xi,CHEN Li-jie,et al.Effects of Root from Different Soybean Cultivars on the Affinity Between Soybean Cyst Nematode and Soybean Root[J].Soybean Science,2008,27(06):1015-1018.[doi:10.11861/j.issn.1000-9841.2008.06.1015]
不同大豆品种根系对大豆胞囊线虫趋化性的影响
- Title:
- Effects of Root from Different Soybean Cultivars on the Affinity Between Soybean Cyst Nematode and Soybean Root
- 文章编号:
- 1000-9841(2008)06-1015-04
- Keywords:
- Soybean; Root exudation; Soybean cyst nematode; Affinity
- 分类号:
- S435.6
- 文献标志码:
- A
- 摘要:
- 以4种不同抗性大豆品种为试材,研究了离体大豆胞囊线虫二龄幼虫对不同抗性大豆品种幼根和不同时期根系分泌物的趋化性。结果表明:在不同抗性不同苗龄大豆根系分泌物作用下,二龄幼虫在根系分泌物周围0~1 cm区间内的分布存在明显差异。感病品种辽豆10在根系分泌物周围0~1 cm区间内的平均分布率最高,达到12.21%,最高峰出现在6 d苗龄。而灰皮支黑豆等抗病品种对二龄幼虫的吸引高峰均出现在大豆出苗18 d后。研究二龄幼虫对离体幼根的趋性时发现,感病品种辽豆10的幼根对大豆胞囊线虫的二龄幼虫具有强烈的吸引性,而抗病品种灰皮支黑豆的幼根对大豆胞囊线虫的二龄幼虫具有排斥作用。
- Abstract:
- Soybean cyst nematode(Heterodera glycines Ichinohe)is one of the most important pests affecting soybean production,and the main preventing and controlling methods depend on the application of resistant variety.Four kinds of soybean with different degree of resistance to soybean cyst nematode were selected as test material.The affinity of in vitro second stage juveniles(J2)of SCN to different young root and root exudation was studied.Results indicated that the distribution rate of J2 acting under root exudates of different soybean cultivar’s young root and different time,had significant differences in the range of 0~1 cm .In this interval,the average distribution rate of susceptible variety Liaodou 10 was highest.The distribution rate reached 12.21%,at the sixth day reached the highest.However,the peaks of resistant cultivars including Huipizhi black soybean were detected after 18 days of seedling.Further work showed that the in vitro young root of Liaodou 10 had great attraction to the J2 of SCN,while the effect in resistant cultivars was just contrary.
参考文献/References:
[1]Koenning S R.Density-dependent yield of Heterodera glycines resistant and susceptible cultivars[J].Supplement to the Journal of Nematology,2000,32(4s):502-507.
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备注/Memo
基金项目:农业部现代农业技术体系资助项目 (413010211-1101-01031908002)。