Sources and inheritance of resistance to brown planthopper in some breeding lines of rice

Martinez, C. R. ; Khush, Gurdev S. (1974) Sources and inheritance of resistance to brown planthopper in some breeding lines of rice Crop Science, 14 (2). pp. 264-267. ISSN 0011-183X

Full text not available from this repository.

Official URL: https://www.crops.org/publications/cs/abstracts/14...

Abstract

The inheritance of resistance to the brown planthopper (Nilaparvata lugens Sial.) in three breeding lines of rice (Oryza sativa L.), IR747B2-6, IR1154-243, and IR4-93, was studied. Seven-day-old seedlings were infested with second- and third-instar nymphs of brown planthopper and seedling injury was recorded 7 to 8 days after infestation. The resistance of IR747B2-6 was conditioned by a single dominant gene which was allelic to the dominant gene of the variety 'Mudgo' (Bph 1). The resistance of IR1154-243 and of IR4-93 was governed by the same recessive gene which was also allelic to the recessive gene conditioning the resistance of 'ASD 7' (bph 2). IR4-93 inherited its resistance from 'H-105'. But both parents of IR747B2-6 and of IR1154-243 were susceptible. We concluded that 'TKM 6,' one of the parents of IR747B2-6, is homozygous for Bph 1 but is also homozygous for a gene, I-Bph-1, which inhibits Bph 1. 'Zenith', one of the parents of IR1154-243, may also have a similar inhibitor gene.

Item Type:Article
Source:Copyright of this article belongs to The American Society of Agronomy.
ID Code:83829
Deposited On:22 Feb 2012 14:12
Last Modified:22 Feb 2012 14:12

Repository Staff Only: item control page