Báo cáo khoa học: results of an experiment with Polish provenances of pedunculate oak (Quercus robur L) and sessile oak (Q petraea [Matt] Liebl)

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: results of an experiment with Polish provenances of pedunculate oak (Quercus robur L) and sessile oak (Q petraea [Matt] Liebl)...
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Báo cáo khoa học: "results of an experiment with Polish provenances of pedunculate oak (Quercus robur L) and sessile oak (Q petraea [Matt] Liebl)" Original article results of an experiment with Polish Preliminary provenances of pedunculate oak (Quercus robur L) and sessile oak (Q petraea [Matt] Liebl) W Barzdajn &jadnr;miatego 48, 60-682 Poznarf, Poland Osiedle Bolestawa 14 m results of the preliminary stage of a provenance experiment, usingSummary — The paper containsthe 1984 acorn crop. The acorns were harvested in pure seed stands of Quercus robur and of Q pe-traea and in mixed stands. In total, 36 Polish provenances were collected. Height and diameter weremeasured in the nursery and height in the field test. Significant differences among provenanceswere found for all characters. Acorn diameter was correlated with height of the seedlings in the nur-sery; however the correlation was not significant with height of 5-year-old plants. experiments / PolandQuercus robur / Quercus petraea / provenanceRésumé — Résultats préliminaires d’un test de provenances polonaises de chênes pédoncu-lé et sessile. Cette contribution présente les résultats d’un test de provenances établi à la suite desrécoltes de glands faites en 1984 en Pologne. Les glands proviennent de peuplements classés pursde Quercus robur et Q petraea ainsi que de peuplements mélangés. Trente-six provenances polo-naises ont été plantées dans 2 sites différents. Au stade pépinière, la hauteur et le diamètre ont étémesurés et des différences significatives ont été observées. La taille des glands est corrélée avec lataille des plants à 2 ans mais non avec la hauteur des plants à 5 ans.Quercus robur /Q petraea / provenance / PologneINTRODUCTION them jointly. Q robur occurs throughout the territory of Poland to an altitude of 600 m. The range of Q petraea is similar ex-Pedunculate and sessile oaks are the only cept that it is absent from the NE corner ofoak species having an important produc- lowland Poland and that it reaches up totion in Poland. The exotic oaks, among 750 m. The interest in genetics, morpholo-which Q rubra Du Roi is the most impor- gy, ecology and cultivation of oaks is nottant, are of marginal significance. Q robur as great as that focused on Pinus sylves-and Q petraea are regarded in Poland as tris and Picea abies.equally valuable, and forest statistics treat Sokolowski carried out the first (1921)preliminary comparison in Poland of 2Q robur populations originating from Malo-polska and Slavonia. In spite of the limitedknowledge of provenance differentiation ofoaks in Poland in 1937, a seed areas pro- was elaborated for oaks by Sokolow-jectski (Sowinski; 1937). From the provenance trials with oaksundertaken in Poland, no published mate-rial known to the author has appeared sofar.MATERIALS AND METHODSThe experiment was started in 1984 with thecollection of acorns. They were usually collect-ed in registered seed stands, but also in otherstands. The provenance list is contained in ta-ble I. Locations of the provenances are shownin figure 1. The majority of stands consist ofQ robur, but there are also stands composedof both species, perhaps including hybrids. Amorphological and genetic analysis of the col-lected material will be made in the future. Inthe spring of 1985, the acorns were sown inthe nursery in a randomized complete blockdesign with 6 replications. The seedlings re-mained in the nursery for 2 years without trans-plantations. In 1987, 2 experimental plots wereestablished: in forest district Taczanów and inforest district Smolarz. Both experiments wereestablished on clear felled areas in a random-ized complete block design with 6 replications.On a single plot, 16 trees were planted, spaced2 x 2 m. The soils were proper brown com-posed of loamy formations. In 1989, theheights of the trees were measured. In forestdistrict Smolarz, much damage was caused bystags; therefore only the results from Ta ...