Resistance stability of high yielding varieties to major insect pests of rice

Issue Date

10-2017

Abstract

Use of resistant rice varieties reduces losses caused by pests in irrigated rice. The stability of resistance depends on the genetic interaction between the rice host, insect herbivore and pathogen. The expression and long-term stability of resistance to a herbivore insect and pathogen in a plant species depend on the genotype of the host, the genotype of the insect and pathogen, and their interaction to environmental conditions. Durable resistance is expected to relieve rice farmers of the need to change varieties often. Durability combined with multiple pest and disease resistance will further reduce the need to apply pesticides. A field experiment was conducted during the dry and wet seasons of 2016 to evaluate the resistance stability of 43 high yielding/popular rice varieties to major insect pests. The re-evaluation showed that majority of the varieties had maintained the reactions against the major insect pests that they had during the time of their release.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

31

Issue

2

Page

164

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

INSECTA; HERVIBORES; PESTS; PEST INSECTS; RESISTANCE VARIETIES; PEST RESISTANCE; DISEASE RESISTANCE; HOST PLANT RESISTANCE; HOST PLANTS; HOST

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