Open AccessScreening of Some Rice Germplasm for Resistance to Leaf Blast and Brown Plant Hopper
Author(s) -
Jideani Afam I.O.,
A. Isong,
Ahmed Amri,
R. Saraswathi
Publication year - 2021
Publication title -
badeggi journal of agricultural research and environment
Language(s) - English
Resource type - Journals
eISSN - 2695-2122
pISSN - 2695-2114
DOI - 10.35849/bjare202102001
Subject(s) - germplasm , blast disease , biology , genotype , horticulture , veterinary medicine , agronomy , gene , medicine , genetics
Blast is a major rice disease that can affect rice plant during all growth stages, wherein causing drastic yield loss globally. Host-plant resistance has been the most practical and cost effective approach to control insect pests and diseases in crops. Therefore, eighty (80) rice genotypes were screened for resistance to the leaf blast and brown plant hopper at Hybrid Rice Evaluation Centre, Gudalur, The Nilgiris District, Tamil Nadu, India. The study site is known as blast and brown plant hopper (BPH) hot spot in India. The genotypes were evaluated according to the standard evaluation system for rice. The results revealed that nineteen (19) genotypes namely; CB08504, CB13506, CB14528, CB14681, PR114, ORJ1141, CR3868-225-1-2-2-5, MTU1156, NDR2111-13-1, PAU3835-12-1-1-2, MTU1157, HKR08-1, CT16658-5-2-3SR-2-1MMP, IR10A136, CB14149, CO(R) 49, Ciherang, IR11A294 and EC578527 showed resistant reaction and 27 genotypes were found to be moderately resistant to the leaf blast disease. None of the genotypes was immune to BPH reaction. Four (4) genotypes were resistant, and twenty-three (23) were moderately resistant. The genotypes viz., CR3868-225-1-2-2-5 and NDR 2111-13-1 which were resistant to leaf blast showed moderate resistance to BPH. Genotypes like HHZ 17-DT-6-Sal3-DT 1, BRR 0015, PAU 3842-60-5-1-3, Vanjinathan and EC 465120 were moderately resistant to both blast and BPH. These genotypes identified may be utilized as genetic sources for multiple resistant genes in rice improvement.