HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Velusamy, R. Articles by Khush, G. S. Search for Related Content PubMed Articles by Velusamy, R. Articles by Khush, G. S. Agricola Articles by Velusamy, R. Articles by Khush, G. S.

Genetics of Field Resistance of Rice to Brown Planthopper¹

The brown planthopper [Nilaparvata lugens (Stal)] is one of the most serious insect pests of rice (Oryza sativa L.) in South and Southeast Asia. Because cultivars with vertical resistance to brown planthopper have "broken down" due to brown planthopper biotype selection, field resistant cultivars with horizontal resistance are being evaluated. The inheritance of field resistance to brown planthopper in two traditional rice cultivars, ‘Utri Rajapan’ and ‘Triveni’, was investigated. Twenty-day old seedlings were infested with second and third-instar brown planthopper nymphs. Reactions of F₁, F₂, and F₃ populations from the crosses of resistant cultivars with the susceptible parent ‘TNI’ revealed that two independently segregating recessive genes govern resistance in both cultivars. Allelism tests revealed that the two cultivars have the same genes for resistance.

Key Words: Nilaparvata lugens (Stal) • Oryza sativa L. • Field resistance

² Former postdoctoral fellow (now, associate professor, Tamil Nadu Agric. Univ., Coimbatore, India), former entomologist and head (now, professor and head, Dep. of Entomology, Louisiana State Univ., Baton Rouge, LA 70803-1710), and plant breeder, IRRI.

Received for publication March 3, 1986.