Premium
Physiology of Rice Tungro Virus Disease: Increased Cytokinin Activity in Tungro‐Infected Rice Cultivars
Author(s) -
SRIDHAR R.,
MOHANTY SUSANTA K.,
ANJANEYULU A.
Publication year - 1978
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1978.tb01595.x
Subject(s) - cultivar , inoculation , biology , oryza sativa , cytokinin , chlorophyll , virus , horticulture , botany , virology , auxin , biochemistry , gene
Tungro virus infection decreased the chlorophyll content in the susceptible rice ( Oryza sativa ) cultivar ‘Taichung Native 1’, while it increased the pigment in the less‐susceptible cultivar ‘IR 20’ during the later stages of infection. The virus was recovered from the infected susceptibile cultivar as early as 3 days after inoculation. Relatively low amounts of virus were recovered from the less‐susceptible cultivar between 12 and 30 days after inoculation. The senescence of detached leaves of virus‐infected less‐susceptible cultivar incubated in water in darkness was considerably delayed compared to healthy leaves. The cytokinin activity in the extracts from inoculated less‐susceptible cultivar was 69% higher than in the extracts from the healthy plants.