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Delaying Flowering of Grain Sorghum Lines for Hybrid Seed Production 1
Author(s) -
Trybom J. C.,
Vanderlip R. L.,
Moore W. A.
Publication year - 1978
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/cropsci1978.0011183x001800050004x
Subject(s) - biology , sorghum , clipping (morphology) , sorghum bicolor , agronomy , hybrid seed , horticulture , hybrid , philosophy , linguistics
A problem facing producers of hybrid grain sorghum, Sorghum bicolor (L.) Moench, seed is using lines that have different flowering times. This study compared flaming, clipping, and applying a contact herbicide as methods to delay flowering. Two pollinator and two male‐sterile lines were treated at the three‐leaf stage, five‐leaf stage, or both. Generally, flaming and clipping produced similar delays; applying a contact herbicide produced significantly less delay. Flaming or clipping at the three‐leaf stage or five‐leaf stage produced 3 to 8 days delay at Manhattan and 2 to 6 days delay at Hutchinson, Kansas. Treating the plants twice resulted in the greatest delay using all three methods at both locations.