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首页> 外文期刊>Russian Journal of Nematology >Effect of planting and irrigation practices on nematode reproduction, root galling, plant growth and yield of two Asian lowland rice varieties infected by the rice root-knot nematode Meloidogyne graminicola
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Effect of planting and irrigation practices on nematode reproduction, root galling, plant growth and yield of two Asian lowland rice varieties infected by the rice root-knot nematode Meloidogyne graminicola

机译：种植和灌溉方式对两个受水稻根结线虫Meloidogyne graminicola感染的亚洲低地水稻品种的线虫繁殖，根gall，植物生长和产量的影响

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摘要

A screenhouse experiment was conducted to examine the effect of planting and irrigation practices at the time of planting on the reproductive and damage potential of Meloidogyne graminicola on rice. In the experiment the effects of two irrigation (early irrigation and delayed irrigation) and two planting (direct seeding and transplanting) practices on the damage and yield loss potential of Meloidogyne graminicola on two commonly cultivated Asian lowland rice varieties (Thihtatyin and Yatanartoe) were evaluated. Both rice varieties were less susceptible in direct seeded rice that had early irrigation. For both varieties, the highest Mf(-eggs) (Multiplication factor) were observed in transplanted plants that had delayed irrigation. For both varieties, the highest number of second-stage juveniles and eggs per root unit and per root system, and Mf(-ggs) were observed in transplanted plants compared with direct seeded plants, irrespective of irrigation practice. The highest root galling index (7.4) was observed on transplanted delayed irrigation plants of variety Thihtatyin, while the lowest root galling index (1.8) was observed on direct seeded, early irrigated plants of variety Yatanartoe. Reduction in most of the plant growth and yield variables measured caused by M. graminicola was observed in transplanted plants of both rice varieties grown under delayed irrigation. Tolerance of both rice varieties was observed in direct seeded rice that had early irrigation. Variety Yatanartoe was more tolerant than variety Thihtatyin. For variety Yatanartoe, grain yield loss caused by M. graminicola was observed only in transplanted rice that had delayed irrigation (30.8%). For variety Thihtatyin, grain yield loss was observed in both direct seeded rice and transplanted rice (40 and 37%, respectively) under delayed irrigation and in transplanted rice (41.3%) under early irrigation.
机译：进行了筛选试验，以检验种植时的种植和灌溉习惯对稻米根结线虫的繁殖和潜在危害的影响。在实验中，评估了两种灌溉方式（早灌和延迟灌溉）和两种种植方式（直接播种和移栽）对两种常见栽培的亚洲低地水稻品种（Thihtatyin和Yatanartoe）对南方根结线虫的危害和产量损失的潜力。 。两种水稻品种在灌溉较早的直播水稻中均较不敏感。对于这两个品种，在延迟灌溉的移植植物中观察到最高的Mf（-卵）（倍增因子）。对于两种变种，与直接播种植物相比，无论灌溉方式如何，在移栽植物中均观察到每根单位和每根系统的第二阶段幼虫和卵和Mf（-ggs）数量最多。在Thihtatyin移栽的延迟灌溉植物中观察到最高的根gall虫指数（7.4），而在Yatanartoe品种的直接播种的早期灌溉植物中观察到了最低的根gall虫指数（1.8）。在延迟灌溉条件下生长的两种水稻品种的移植植物中均观察到了由格氏按蚊引起的大多数植物生长和产量变量的降低。在灌溉较早的直播水稻中观察到两种水稻的耐性。 Yatanartoe品种比Thihtatyin品种更具耐受性。对于Yatanartoe品种，仅在延迟灌溉的插秧水稻中观察到了由Gratis引起的谷物产量损失（30.8％）。对于硫杂他汀品种，在延迟灌溉下的直播稻和移栽稻（分别为40％和37％）和在早期灌溉下的移栽稻（41.3％）中均观察到谷物减产。

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