Evaluation and selection of maize breeding material on heat resistance traits
Abstract
The article presents the results of the evaluation of a new source material (breeding samples) of maize on heat resistance. The initial screening of heat tolerance of 118 breeding samples was carried out in the laboratory, and breeding samples (70 numbers) with high potential heat tolerance were identified. In the field heat resistance of the breeding material was assessed by direct and indirect traits, the source material was classified according to field germination after heat treatment of seeds - 25 samples with high field germination (90-100 %) were identified. The breeding samples were classified on viability of pollen after exposure to suboptimal (40-41 °C) temperatures; 21 samples with pollen setting rate of more than 80 % were identified. Two selection cycles were carried out; 27 breeding samples with obvious traits of heat resistance were identified for further breeding work.
About the Authors
V. I. Krautsou
RNDUP "Polessky Institute of Plant Growing"
Belarus
Belarus
Mozyr
L. P. Shimansky
RNDUP "Polessky Institute of Plant Growing"
Belarus
Belarus
Mozyr
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Review
For citations:
Krautsou V.I., Shimansky L.P. Evaluation and selection of maize breeding material on heat resistance traits. Arable Farming and Plant Breeding in Belarus. 2025;(61):159-170. (In Russ.)
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