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Resistance in sorghum to shoot fly Atherigona soccata: Evidence for the source of leaf surface wetness
Author(s) -
SIVARAMAKRISHNAN S,
SOMAN P,
NWANZE K F,
REDDY Y V R,
BUTLER D R
Publication year - 1994
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1994.tb04963.x
Subject(s) - biology , sorghum , shoot , whorl (mollusc) , agronomy , horticulture , tritiated water , sorghum bicolor , botany , tritium , physics , nuclear physics , genus
Summary Leaf surface wetness (LSW) of the central whorl leaf of sorghum seedlings has been associated with susceptibility to shoot fly. Previous physical and physiological evidence suggested that LSW originates from the plant. This was confirmed by radioactive labelling methods using tritium and carbon‐14. Tritiated water applied to the soil of potted seedlings was translocated to the surface of the whorl leaf. There were significant differences in the amount of tritiated water collected from susceptible (CSH 5) and resistant (IS 18551) genotypes. Studies with carbon‐14 labelling of sorghum seedlings indicated the presence of (small amounts of) solutes in the surface water that may affect larval movement and survival.