抗性作为北卡罗来纳州棉花上南方根结线虫管理的一种策略。

Resistance as a Tactic for Management of Meloidogyne incognita on Cotton in North Carolina.

作者信息

Koenning S R, Barker K R, Bowman D T

出版信息

J Nematol. 2001 Jun;33(2-3):126-31.

PMID:19266008

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2638132/

Abstract

Selected cotton cultivars were evaluated for resistance to the southern root-knot nematode, Meloidogyne incognita, in greenhouse and field experiments. Cotton cultivars LA 887, Auburn 634, and NemX cotton were highly resistant to three North Carolina populations of root-knot nematode in greenhouse experiments compared to susceptible cultivars. The relative susceptibility of cultivars tested in the greenhouse from most to least susceptible were Deltapine 16 > Deltapine 50 > LA 887 or NemX > Auburn 634. The yields of resistant and susceptible cotton cultivars were increased by fumigation in fields infested with root-knot nematode. Reproduction of M. incognita in field plots on NemX, Paymaster H 1560, and Stoneville LA 887 was less than on susceptible cultivars. Diminished reproduction of the nematode on resistant cultivars may reduce the need for nematode control tactics in subsequent years.

摘要

在温室和田间试验中，对选定的棉花品种进行了抗南方根结线虫（Meloidogyne incognita）的评估。与易感品种相比，棉花品种LA 887、奥本634和NemX棉花在温室试验中对北卡罗来纳州的三个根结线虫种群具有高度抗性。温室中测试的品种从最易感到最不易感的相对易感性顺序为：岱字棉16＞岱字棉50＞LA 887或NemX＞奥本634。在根结线虫侵染的田间，熏蒸处理提高了抗性和易感棉花品种的产量。在田间试验中，根结线虫在NemX、Paymaster H 1560和斯通维尔LA 887上的繁殖量少于在易感品种上的繁殖量。线虫在抗性品种上繁殖量的减少可能会降低后续年份对线虫防治策略的需求。