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ŠUMARSKI LIST 1-2/1967 str. 55     <-- 55 -->        PDF

AN ESTIMATE OF THE DEGREE OF HERITABILITY OF HEIGHTS AND
DIAMETERS IN WHITE WILLOW (Salix alba L.) COMPUTED FROM A CLONAL
TEST OF 1/1 OLD PLANTS


Summary


On an experimental plot sized 4 X 7.5 m were set cuttings of White Willow
(Salix alba L.) spaced 30 X 20 cm, in 5 replications. Of each clone there were set


out 55 cuttings. For the formation cf arithmetical means of heights and diameters
according to the replications there were taken measurements in all clones of the
first ten plants in the replication The degree of heritability of heights and diameters
was computed according to formulae by Whrigt and Van Buijtenen,
E i n s p e h r, and Joharsson.
On the basis of the results obtained the following can be concluded:


1.
The heritability of heights in White Willow (Salix alba L.) — computed from
the clonal test fcr the 1/1 years old plants ranges in l´mits between 73 and
93´A>, while the heritability of diameters between 69 and 927o;
2.
Both results point to the that the height and diameter increments are to a
greater extent conditioned by heredity than by environment;
3.
When comparing with each other the results obtained for the inheritance of
heights, and diameters we come to the conclusion that the height increment
is subject to a greater extent to the genetic control than the diameter increment;
4.
The computed values for the heritability of heights and diameters are not
the parameters of a population but of an individual experiment.
LITERATURA


1.
Ehrenberg , C. E. (1963): Genetic Variation in Progeny Tests of Scots Pine
(P. silvestris L ) Stud. Fcr. Suec, 10, 1—135 pp.
2.
Hattemer , H. H. (1963;: Estimates of Heritability Published in Forest Tree
Breeding Research. World Consultation on Forest Genetics and Tree Improvement,
2a´3, Stockholm.
3.
Krstinić , A. (1966): Varijabilnost i nasljednost visina, broja grana i boje
izbojaka kod bijele vrbe (Salix alba L.) populacija Bakovci i Lipovljani. Magistarska
radn;a, Zagreb.
4.
LeClerg, E. L., W. H. Leonard and A. G. Clark (1962): Filld Plot Technique,
Burges Publishing Company. Minneapolis, 373 pp.
5.
S i v e c k i, R. — M. G i e r t y c h (1965): The Estimation of Genetic Parameters
for Rooting Albility of Cuttings and one Year Height of Poplar Hybrids. Acta
Soc. Bot. Poloniae, Vol. XXXIV, No 3, pp. 533—547.
6.
To da, R. (1963): Mass Selection and Heritability. Studies in Forest Tree Breeding
FAO, Proc. World. Cons. For. Gen. Tree Impr. I, 2a/2.
7.
Toda, R. (1953): Variation and Heritability of some Quantitative Characters in
Cryptomeria, Silvae Genetica 6, pp. 87—93.
8.
V i d a k o v i ć, M. (1966): Genetika i. uzgoj šuma, Šum. List br. 7/8. Zagreb, pp.
333—342.
9.
V i d a k o v i ć, M. (1966): Genetika i oplemenjivanje šumskog drveća, Skripta
Zagreb, 277 pp.
16.
Wright , W. J. (1962): Genetics of Forest Tree Improvement, Rome, 399 pp.
11.
Ž u f a, L. (1964): Varijabilnost i nasljednost pravnosti stabla crne topole Srednjeg
Podunavlja. Dizertacija, Zagreb.
12.
Z u f a, L. (1965): Prilog proučavanju nasljednosti oblika debla eurameričkih topola,
Topola 9 (52—54), Beograd, pp. 28—32.
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