Growth indicators of pinus sibirica by the early formation of microstrobiles in the second generation

On the plantation “LЕР-2”, located in the Karaulny forestry of the Educational and Experimental Forestry Enterprise of Siberian State University named after. M. F. Reshetnev, the second generation of Pinus sibirica grows. The plantation was created by seedlings grown from cones collected from populations of different geographical origins: Altai, Biryusa, Leninogorsk, Tanzybey, Tisul, Cheremkhovo and Yartsevo, differing by northern latitude from 50°12' (Leninogorskoye) to 61°00' (Yartsevskoye), eastern longitude from 85°33' (Leninogorskoye) to 102°36' (Cheremkhovo), and in altitude from 100 m (Yartsevskoye) to 1700 m (Leninogorskoye). These offspring are raised near the northern latitude – 56°00', eastern longitude – 92°30', altitude – 300 m. Formation of microstrobiles on Pinus Sibirica at single copies was noted at 18 and 19 years of age. The indicators of trees with early microstrobile formation were compared with those that had not entered the reproductive phase of development. It was established that in Pinus sibirica at the age of 18, microstrobiles were formed in single trees of Altai (No. 6-7 and No. 6-19), Divnogorsk (No. 7-13 and  No. 10-22), Leninogorsk (No. 5-37), Tisul (No. 3-13 and No. 3-22) and Yartsevo (No. 4-2) origin. In the Cheremkhovo and Biryusa variants there were no trees with microstrobiles. At the age of 19, some specimens re-formed microstrobiles in variants of Altai (No. 6-7 and No. 6-19), Divnogorsk (No. 7-3) and Tisul (No. 3-13) origins. In 2023, specimens with microstrobiles were added in variants of Biryusa (No. 2-36, No. 5-3, No. 5-11) and Yartsevo (No. 4-21) origins. During two years of observations there were no specimens in the Cheremkhovo variant. Variability was noted in the number of microstrobiles on the tree and their location on the shoot. The largest number of microstrobiles was found in specimen No. 6-7 of Altai origin. The excess was 88.2%. Trees selected for pollen productivity are recommended for their further propagation and use in the creation of breeding objects for early reproductive development.

1. Bratilova N. P. Sravnitel'nyj analiz plantacionnyh kul'tur kedra sibirskogo, sozdannyh seyancami i sazhencami // Hvojnye boreal'noj zony, 2006. № 3. S. 101–104.

2. Osobennosti rosta semennogo potomstva otselektirovannyh po urozhajnosti klonov sosny kedrovoj sibirskoj raznogo geograficheskogo proiskhozhdeniya v usloviyah yuga Srednej Sibiri / N. P. Bratilova, R. N. Matveeva, O. F. Butorova, E. Yu. Shcherba, A. G. Kichkil'deev, V. V. Komarnickij // Hvojnye boreal'noj zony, 2016. Т. XXXVII, № 5-6. S. 294–297.

3. Goroshkevich S. N. Selekciya kedra sibirskogo kak orekhoplodnoj porody // Lesnoe hozyajstvo, 2000. № 4. S. 25–27.

4. Zemlyanoj A. I., Nekrasova T. P. Principy otbora plyusovyh derev'ev po semennoj produktivnosti // Selekciya, genetika i semenovodstvo drevesnyh porod kak osnova sozdaniya vysokoproduktivnyh lesov. Moskva, 1980. S. 116–118.

5. Iroshnikov A. I. Polimorfizm populyacij kedra sibirskogo // Izmenchivost' drevesnyh rastenij Sibiri. Krasnoyarsk, 1974. S. 77–103.

6. Mamaev S. A. Formy vnutrividovoj izmenchivosti drevesnyh rastenij. M. : Nauka, 1973. 284 s.

7. Matveeva R. N., Butorova O. F., Bratilova N. P. Proyavlenie izmenchivosti kedra sibirskogo na rannih etapah ontogeneza // Sovremennye problemy nauki i obrazovaniya, 2006. № 2. S. 52–53.

8. Osobennosti rosta i semenosheniya klonov plyusovyh derev'ev kedra sibirskogo, otselektirovannyh po semennoj i stvolovoj produktivnosti / R. N. Matveeva, O. F. Butorova, A. V. Revin, A. G. Kichkil'deev // Vestnik KrasGAU. 2010. № 11. S. 110–112.

9. Matveeva R. N., Butorova O. F. Kollekciya klonov, polusibov, raznyh morfologicheskih form kedra sibirskogo na plantaciyah SibGTU (yug Srednej Sibiri). Krasnoyarsk : SibGTU, 2012. 47 s.

10. Matveeva R. N., Bratilova N. P., Shcherba Yu. E. Sohranenie geneticheskih resursov sosny kedrovoj sibirskoj putyom sozdaniya selekcionnyh ob"ektov // Sohranenie lesnyh geneticheskih resursov. Gomel' : OOO “Kolordruk”, 2017. S. 129–130.

11. Matveeva R. N., Shcherba Yu. E., Shenmajer N. A. Izmenchivost' reproduktivnogo razvitiya polusibov plyusovyh derev'ev Pinus sibirica Du Tour // Lesotekhnicheskij zhurnal, 2023. T. 13, № 1 (49). S. 99–111.

12. Pastuhova A. M. Perspektivnost' otbora polusibov kedra sibirskogo po intensivnosti rosta v rannem vozraste // Lesnoj zhurnal. 2017. № 5. S. 73–81.

13. Titov E. V. Genetiko-selekcionnye osnovy podbora klonov kedra sibirskogo pri plantacionnom orekhovodstve // Plodovodstvo, semenovodstvo, introdukciya drevesnyh rastenij. Krasnoyarsk: SibGTU, 1998. S. 21–23.

14. Shcherba Yu. E. Kopchenko D. E., Poplyujko- va M. V. Izmenchivost' 36-letnih polusibov plyusovyh derev'ev kedra sibirskogo po reproduktivnomu razvitiyu na plantacii \”Ermaki”\ // Plodovodstvo, semenovodstvo i introdukciya drevesnyh rastenij. Krasnoyarsk : SibGU, 2020. T. 23. S. 157–160.

15. Critchfield W. B., Little E. L. Jr. Geographic distribution of the pines of the world // U.S. Department of Agriculture, Forest Service, Misc. Washington, DC, 1966. 97 p.

16. Zhuk E., Goroshkevich S. Growth and reproduction in Pinus sibirica ecotypes from Western Siberia in a common garden experiment // New Forests, 2018. Vol. 49. No. 2. P. 159–172.

17. About the Heritability influence to the growth performance in Scots pine (Pinus sylvestris L.) progeny trials / M. Kurm, U. Kaur, T. Maaten, A. Kiviste // Forestry Studies. 2008. Vol. 48. Pp. 79–87.

18. Rozwoj roznych pochodzen sosny zwyczajnej na pozarzysku w Nadlesnictwie Potrzebowice / H. Zbigniew, J. Zwolinski, Z. Kwapis, I. Matusczzyk // Les. Pr. Bad. 2008. 69. № 1. Pp. 57–65.