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Clonal variation in growth, flowering and cone production in
a seed orchard of Scots pine (Pinus sylvestris L.) in
Turkey
Ahmet Sıvacıoğlu*, Sezgin Ayan and Durmuş Ali Çelik
Kastamonu
University, Faculty of Forestry, Department of Forest
Engineering, 37200 Kastamonu, Turkey.
*Corresponding author.
E-mail:
asivacioglu@kastamonu.edu.tr or
ahmets1973@gmail.com
Tel.:
+90 366 2150900. Fax: +90 366 2152316.
Accepted 9 June, 2009 |
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In this study, observations and measurements were made on
five grafts for each of 30 clones in three successive years
(2006, 2007 and 2008) on Scots pine (Pinus sylvestris)
seed orchard established in 1995 by using 2 years-old grafts
in Turkey.
The examined characters were total height, diameter at base,
number of branches, length of terminal shoot, length of
lateral shoot, length of longest branch, number of male
whorls, number of male flowers in a whorl, number of male
flowers, length of male whorl, number of female flowers,
cone number and crown diameter.
Variation,
broad-sense heritability and correlations between characters
were estimated. Variation among clones was lower than among
grafts for all studied characters. The broad sense
heritability varied in a range of 0.15-0.38 for growth
related characters, while it varied in a range of 0.15-0.59
for flowering related characters. The genetic variation for
female and male flowering number is 36.5% and 82.8%,
respectively. The number of flowers increased with the graft
size. Significant correlations between the growth and
flowering related characters varied in a range of 0.20-0.59
and 0.17-0.26 for male and female flowering, respectively.
Key
words:
Scots pine, heritability, correlation, clone, graft,
variation, cone, flowering, growth. |
