USE OF ANALYTICAL BACKGROUND «EARLY SOWING TERM» FOR EVALUATION OF COLD RESISTANCE OF CORN BREEDING MATERIAL
Abstract
The article presents the results of the evaluation of new corn initial material (constant self – pollinated lines) by indirect features characterizing cold resistance such as: field germination, and the length of the "sowing – full shoots" period. To increase the efficiency of the selection of cold-resistant forms, the provocative background "early sowing term" was used. According to the results of the assessment, among siliceous self – pollinated forms, the following self – pollinated lines with a shorter interphase «sowing – full shoots» period at an early sowing term were identified: BKR 311, BKR 803, BKR 201 – siliceous ones; BKR 804 and BKR1984 – tooth-shaped ones. It was noted that tooth – shaped forms reduced field germination by 9.9 % at an early sowing term compared to the optimal one, while in siliceous forms, that index was 6.7 %.
Among the siliceous forms, BKR 101, BKR 46, BKR 201 self – pollinated lines were isolated. At the early sowing term they decreased field germination to a lesser extent compared with the optimal term.
Among the tooth-shaped forms, BKR 804, BKR 802 and BKR 129 self – pollinated lines with the least reaction to cold soil were identified. BKR 1984, BKR 804, and BKR 703 self – pollinated lines had the maximum field germination at the early sowing term (above 70 %).
About the Authors
V. I. Krautsou
РНДУП «Полесский институт растениеводства»
Belarus
Belarus
L. P. Shimansky
РНДУП «Полесский институт растениеводства»
Belarus
Belarus
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Review
For citations:
Krautsou V.I., Shimansky L.P. USE OF ANALYTICAL BACKGROUND «EARLY SOWING TERM» FOR EVALUATION OF COLD RESISTANCE OF CORN BREEDING MATERIAL. Arable Farming and Plant Breeding in Belarus. 2024;(60):258-264. (In Russ.)
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