yield and agronomic characteristics of
Romanian bread wheat varieties under the conditions
Biga Vocational College, Çanakkale Onsekiz Mart University,
Tel: + (90) 286 3162878. Fax: +(90) 286 3163733.
Accepted 5 May, 2008
In this study, fourteen
bread wheat varieties, twelve of which were introduced into
Turkey from Romania, were evaluated for grain yield and
seven agronomic properties in Biga, Çanakkale in northwest
part of Turkey in 2005 - 2006 and 2006 - 2007 growing
seasons. The objectives of the research, carried out in a
completely randomized block design with 3 replicates, were
to investigate Romanian wheat varieties, to study the
associations between yield and yield components, and to
determine the most promising varieties suitable to Biga
conditions. Based on a two-year data, all the
characteristics examined showed significant difference (P <
0.05) and varied with a wide range in grain yield (344.0 -
475.5 kg da-1), plant height (78.1 - 103.3 cm),
spike length (9.2 - 16.4 cm), number of spikelets (15.3 -
19.3 number), number of grains per spike (35.7 - 43.3
number), grain weight per spike (1.25 - 1.73 g), harvest
index (34.2 - 43.8%) and 1000 grain weight (35.2 - 47.8 g).
Except for harvest index, genotype x year interactions (GxY)
was found to be significant for all the traits studied.
Correlation coefficient analyses showed that the grain yield
had positive and significant associations with plant height
(r = 0.416***), grain weight per spike (r = 0.345**), number
of grain per spike (r = 0.220*) and 1000 grain weight (r =
0.388***). Consequently, new bread wheat varieties, Joseph
followed by Dumbrava and Trivale, from Romania gave rise to
higher yield compared to the local varieties.
Triticum aestivum, introduction, yield components,