Comparison of maize lines and their test crosses according to grain yield and some physiological properties
Ozdemir, Elif and Sade, Bayrain
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Abstract
This study evaluated 7 inbred lines of maize (Zea mays L.), 3 testers,
and 21 hybrids produced using the line x tester mating design. The study
was conducted in Konya, in The Central Anatolia Region of Turkey. CD
(coefficient of determination) values were calculated to detect the
effect of inbred lines on grain yield and other physiological properties
of the test crosses. The mean values of all the parameters of the
genotypes were evaluated using the Duncan's multiple range test for
grouping proogenies and parent groups. The CD values between parent
groups and progenies were statistically significant for photosynthetic
efficiency (r(2) = 0.11{*}{*}; P < 0.01) and Mg content (r(2) =
0.14{*}{*}; P < 0.01). The CD value for grain yield of line 14.2 was
0.58; for chlorophyll content, anthocyanin content, and grain yield of
line 14.20 CD values were 0.70, 0.25, and 0.55, respectively. Similarly,
the CD values for total anthocyanin and Mg contents of line 14.21 were
0.36 and 0.48, respectively. The inbred line 14.20 was effective for the
formation of chlorophyll, total anthocyanin content, and grain yield
according to its high CD values, and progenies of the line were within
the first group for other properties, according to the Duncan's multiple
range test (14.20 x FRMo 17 {[}total anthocyanin content, grain yield],
14.20 x ADK 451 {[}chlorophyll content, grain yield]). A hybrid produced
from an inbred line that has high CD values within the first group
represents the genetic potential of the inbred line, supporting the use
of CD values for parental selection methods in breeding studies.... Show more Show less