Resistance stability of multi-adaptation trial (MAT) check varieties to major insect pests of rice

Issue Date

10-2016

Abstract

Resistant rice varieties are needed to reduce losses caused by insect pests in irrigated rice. The stability of resistance depends on the genetic interaction between the rice host and the insect herbivore. The expression of long-term stability of resistance to a herbivore insect in a plant species depend on the genotype of the host, the genotype of the insect, and the interaction between the plant and the insect under different environmental conditions. Evaluation of different rice lines with their check varieties for resistance against major insect pests of rice was carried out in both field and screenhouse conditions in 10 National Cooperative Test (MAT) sites. The study focused on the reactions of the check varieties used in MAT trials namely: PSB Rc18, PSB Rc82 NSIC Rc134, NSIC Rc138, NSIC Rc222, NSIC Rc224 and NSIC Rc240 was determined. Comparison was based on their reactions to major insect pests of rice in five years (2010-2014). PSB Rc18 and PSB Rc82 were the most stable among the check varieties. These varieties exhibited high resistance to intermediate reactions to stemborer, brown planthopper and green leafhopper.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

30

Issue

2

Page

183

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

FULGOROIDEA; ORYZA SATIVA; RICE; IRRIGATED RICE; STEM EATING INSECTS; PESTS OF PLANTS; PEST INSECTS; VARIETIES

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