Cl. Marton et al., EVALUATION OF THE COLD TOLERANCE OF YOUNG MAIZE PLANTS IN THE TEMPERATURE-GRADIENT CHAMBER, Novenytermeles, 46(6), 1997, pp. 549-557
Six genetically diverse inbred lines with different levels of cold tol
erance were investigated at 10 different temperatures from 9 degrees C
-18 degrees C at 1 degrees C intervals for 33 days. -There was a signi
ficant difference between the inbred lines as regards the cold toleran
ce of young plants. -The cold tolerance of the inbred lines gave diffe
rent rankings according to the plant trait evaluated. -A 654 and HMv 1
6 produced the most dry matter and F 2 and HMv 307 the least. A very s
imilar ranking was found for final plant height, leaf area and fresh s
hoot weight. -The dry matter content of the young plants was about 10%
at temperatures above 13 degrees C. At lower temperatures (9-12 degre
es C) the dry matter content of CM174 was the highest, followed by HMv
307 and HMv 16. -An evaluation of the weekly increment in plant heigh
t at 9-12 degrees C showed that F 2 had the longest period of growth,
while Mo 17 stopped growing earliest.