哥伦比亚纽带线虫和南方根结线虫在‘戴维斯’大豆上的致病性及繁殖情况
Pathogenicity and Reproduction of Hoplolaimus columbus and Meloidogyne incognita on 'Davis' Soybean.
作者信息
Appel J A, Lewis S A
出版信息
J Nematol. 1984 Oct;16(4):349-55.
The effects of initial populations of Hoplolaimus columbus and Meloidogyne incognita on growth and yield of Davis soybean were determined for 1980 and 1981 in microplots and H. columbus in field tests in 1981. M. incognita suppressed yield in microplots both years and H. columbus in 1980. Maximum suppression of dry pod weight by M. incognita was 45% and by H. columbus 35%. The relationship of yield vs. nematode population at planting time was described by a declining exponential model. Maximum reproductive rates for M. incognita and H. columbus were 67.0 and 4.7, respectively, and were inversely proportional to initial population level. Nematode reproductive rates, survival ability, and feeding habits suggest species specific life strategies in the ecological community.
1980年和1981年在微型小区中测定了哥伦比亚螺旋线虫（Hoplolaimus columbus）和南方根结线虫（Meloidogyne incognita）的初始虫口数量对戴维斯大豆生长和产量的影响，1981年还在田间试验中测定了哥伦比亚螺旋线虫的影响。南方根结线虫在这两年的微型小区中均抑制了产量，哥伦比亚螺旋线虫在1980年抑制了产量。南方根结线虫对干豆荚重量的最大抑制率为45%，哥伦比亚螺旋线虫为35%。产量与种植时线虫虫口数量的关系用下降指数模型描述。南方根结线虫和哥伦比亚螺旋线虫的最大繁殖率分别为67.0和4.7，且与初始虫口水平成反比。线虫的繁殖率、生存能力和取食习性表明了生态群落中特定物种的生活策略。
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