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New Genes for Resistance to the Brown Planthopper in Rice 1
Author(s) -
Laksminarayana A.,
Khush Gurdev S.
Publication year - 1977
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1977.0011183x001700010028x
Subject(s) - brown planthopper , biology , gene , allele , cultivar , resistance (ecology) , genetics , nymph , instar , infestation , inheritance (genetic algorithm) , major gene , horticulture , botany , agronomy , larva
The inheritance of resistance to brown planthoppers ( Nilaparvata lugens Stal.) was studied in 28 rice ( Oryzasaliva L.) cultivars in the greenhouse. Seven‐day‐old seedlings were infested with second and third‐instar nymphs of brown planthoppers and seedling injury was recorded at 7 to 8 days after infestation. Single dominant genes that are allelic to Bph 1 condition the resistance in ‘Balamawee’, ‘CO 10’, ‘Heenukkulama’, ‘MTU 9’, ‘Sinnakayam’, ‘SLO 12’, ‘Sudhubalawee’, ‘Sudurvi 305’, and ‘Tibiriwewa’. Single recessive genes that are allelic to bph 2 govern resistance in the cultivars ‘Anbaw C7’, ‘ASD 9’, ‘Dikwee 328’, ‘Hathiel’, ‘Kosatawee’, ‘Madayal’, ‘Mahadikwee’, ‘Malkora’, ‘M.I. 329’, ‘Murungakayan 302’, ‘Ovarkaruppan’, ‘Palasithari 601’, ‘PK‐1’, ‘Seruvellai’, ‘Sinna Karuppan’, and ‘Vellailangayan’. A single dominant gene also conveys resistance in ‘Rathu Heenati’, but it segregates independently of Bph 1 and is designated as Bph 3 . Similarly, a single recessive gene conveys resistance in ‘Babawee’ but it segregates independently of bph 2 and is designated as bph 4 . The resistance in ‘Ptb 21’ is controlled by one dominant and one recessive gene. The allelic relationships of these two genes to other genes are not known.