Genetic control of intra-annual height growth in 6-year-old Norway spruce progenies in Latvia
Coupling growth with periods of favourable weather conditions minimizes risks of frost damage and maximizes annual height increment. The phenology of the formation of height increment is therefore a trait related to the adaptability of trees to annual weather fluctuations. Strong genetic control of...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Italian Society of Silviculture and Forest Ecology (SISEF)
2019-04-01
|
| Series: | iForest - Biogeosciences and Forestry |
| Subjects: | |
| Online Access: | https://iforest.sisef.org/contents/?id=ifor2777-012 |
| _version_ | 1819169300710162432 |
|---|---|
| author | Matisons R Zeltins P Danusevicius D Dzerina B Desaine I Jansons A |
| author_facet | Matisons R Zeltins P Danusevicius D Dzerina B Desaine I Jansons A |
| author_sort | Matisons R |
| collection | DOAJ |
| description | Coupling growth with periods of favourable weather conditions minimizes risks of frost damage and maximizes annual height increment. The phenology of the formation of height increment is therefore a trait related to the adaptability of trees to annual weather fluctuations. Strong genetic control of the timing of the onset and cessation of shoot elongation has been reported for Norway spruce, but little is known about its fluctuations that occur during the growth period. The strength of the genetic control of the height growth rate was assessed for young (6 years old) Norway spruce progenies originating from six open-pollinated stands from two local provenance regions. In 2010, the length of the growing period for the studied trees was ca. 60 days. Trees from the more continental provenance region, which had later onset and cessation of height growth (by ca. 2.5 days), exhibited slightly lower increments (by ca. 1%). Accordingly, the provenance region had a significant effect on height growth at the beginning and end of the growing period. Nevertheless, considerable genetic control of the growth rate was found throughout the entire growing period (particularly at the beginning and cessation, ha2 ≥ 0.20), except for a week-long interval around mid-summer (ha2 = 0.07). Similarly, the coefficient of additive genetic variation suggested that breeding could be applied for the improvement of height growth intensity throughout the season. The phenotypic correlations between weekly growth rates and tree height (before growth) were mostly non-significant, suggesting varying mechanisms of control, hence possibility for simultaneous improvement of the traits by breeding. |
| first_indexed | 2024-12-22T19:17:19Z |
| format | Article |
| id | doaj.art-277ecf3e931548f6b5f712066308b10e |
| institution | Directory Open Access Journal |
| issn | 1971-7458 1971-7458 |
| language | English |
| last_indexed | 2024-12-22T19:17:19Z |
| publishDate | 2019-04-01 |
| publisher | Italian Society of Silviculture and Forest Ecology (SISEF) |
| record_format | Article |
| series | iForest - Biogeosciences and Forestry |
| spelling | doaj.art-277ecf3e931548f6b5f712066308b10e2022-12-21T18:15:29ZengItalian Society of Silviculture and Forest Ecology (SISEF)iForest - Biogeosciences and Forestry1971-74581971-74582019-04-0112121421910.3832/ifor2777-0122777Genetic control of intra-annual height growth in 6-year-old Norway spruce progenies in LatviaMatisons R0Zeltins P1Danusevicius D2Dzerina B3Desaine I4Jansons A5Latvian State Forest Research Institute “Silava”, Rigas str. 111, LV2169 Salaspils (Latvia)Latvian State Forest Research Institute “Silava”, Rigas str. 111, LV2169 Salaspils (Latvia)Aleksandras Stulginskis University, Faculty of Forest Sciences and Ecology, Studentu 11, LT53361 Kaunas (Lithuania)Latvian State Forest Research Institute “Silava”, Rigas str. 111, LV2169 Salaspils (Latvia)Latvian State Forest Research Institute “Silava”, Rigas str. 111, LV2169 Salaspils (Latvia)Latvian State Forest Research Institute “Silava”, Rigas str. 111, LV2169 Salaspils (Latvia)Coupling growth with periods of favourable weather conditions minimizes risks of frost damage and maximizes annual height increment. The phenology of the formation of height increment is therefore a trait related to the adaptability of trees to annual weather fluctuations. Strong genetic control of the timing of the onset and cessation of shoot elongation has been reported for Norway spruce, but little is known about its fluctuations that occur during the growth period. The strength of the genetic control of the height growth rate was assessed for young (6 years old) Norway spruce progenies originating from six open-pollinated stands from two local provenance regions. In 2010, the length of the growing period for the studied trees was ca. 60 days. Trees from the more continental provenance region, which had later onset and cessation of height growth (by ca. 2.5 days), exhibited slightly lower increments (by ca. 1%). Accordingly, the provenance region had a significant effect on height growth at the beginning and end of the growing period. Nevertheless, considerable genetic control of the growth rate was found throughout the entire growing period (particularly at the beginning and cessation, ha2 ≥ 0.20), except for a week-long interval around mid-summer (ha2 = 0.07). Similarly, the coefficient of additive genetic variation suggested that breeding could be applied for the improvement of height growth intensity throughout the season. The phenotypic correlations between weekly growth rates and tree height (before growth) were mostly non-significant, suggesting varying mechanisms of control, hence possibility for simultaneous improvement of the traits by breeding.https://iforest.sisef.org/contents/?id=ifor2777-012Height Growth RateGrowing PeriodHeritabilityPicea abiesLocal Populations |
| spellingShingle | Matisons R Zeltins P Danusevicius D Dzerina B Desaine I Jansons A Genetic control of intra-annual height growth in 6-year-old Norway spruce progenies in Latvia iForest - Biogeosciences and Forestry Height Growth Rate Growing Period Heritability Picea abies Local Populations |
| title | Genetic control of intra-annual height growth in 6-year-old Norway spruce progenies in Latvia |
| title_full | Genetic control of intra-annual height growth in 6-year-old Norway spruce progenies in Latvia |
| title_fullStr | Genetic control of intra-annual height growth in 6-year-old Norway spruce progenies in Latvia |
| title_full_unstemmed | Genetic control of intra-annual height growth in 6-year-old Norway spruce progenies in Latvia |
| title_short | Genetic control of intra-annual height growth in 6-year-old Norway spruce progenies in Latvia |
| title_sort | genetic control of intra annual height growth in 6 year old norway spruce progenies in latvia |
| topic | Height Growth Rate Growing Period Heritability Picea abies Local Populations |
| url | https://iforest.sisef.org/contents/?id=ifor2777-012 |
| work_keys_str_mv | AT matisonsr geneticcontrolofintraannualheightgrowthin6yearoldnorwayspruceprogeniesinlatvia AT zeltinsp geneticcontrolofintraannualheightgrowthin6yearoldnorwayspruceprogeniesinlatvia AT danuseviciusd geneticcontrolofintraannualheightgrowthin6yearoldnorwayspruceprogeniesinlatvia AT dzerinab geneticcontrolofintraannualheightgrowthin6yearoldnorwayspruceprogeniesinlatvia AT desainei geneticcontrolofintraannualheightgrowthin6yearoldnorwayspruceprogeniesinlatvia AT jansonsa geneticcontrolofintraannualheightgrowthin6yearoldnorwayspruceprogeniesinlatvia |