Effects of temperature, photoperiod and provenance on the growth and development of Scotch pine seedlings

Jensen, Keith F.

doi:10.31274/rtd-180813-1949

Cited by 7 publications

(10 citation statements)

References 3 publications

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“…This has been the case, for example, in Picea abies (L.) Karst. (Nienstaedt 1967;Worrall and Mergen 1967) and Pinus sylvestris L. (Jensen and Gatherum 1965;Hoffman and Lyr 1967). This compensation is manifested in the reduction of the thermal time requirement in partially chilled trees, but not in fully chilled ones (Myking and Heide 1995).…”

Section: Introductionmentioning

confidence: 90%

Bud burst in Norway spruce (Picea abies): preliminary evidence for age-specific rest patterns

Partanen¹,

Hänninen

Häkkinen³

2004

Trees

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This study examines the effect of chilling and photoperiod on rest completion and bud burst in Norway spruce [Picea abies (L.) Karst.] using twigs from both 15-year-old ("young trees") and 56-year-old ("old trees") trees. The material was transferred between September and May from outdoors to experimental forcing conditions with four different photoperiods. The bud burst percentage of the twigs from young trees generally increased in all photoperiods until the end of the year. After that it decreased until vernal equinox (March 20) and then increased steeply towards spring. This new observation of transient rest completion during autumn suggests that young trees have (I) a transient time window during late autumn when ontogenetic development is possible, and (ii) a secondary rest culminating approximately at the time of vernal equinox. In twigs from old trees the transient rest completion was much weaker as the bud burst percentages generally remained under 20 during autumn and winter. At vernal equinox there were no burst buds in twigs from the old trees in any photoperiod and after that the bud burst percentage increased basically in the same manner as in the young trees. The bud burst percentage of the twigs from young trees was generally higher as the photoperiod increased. However, no evidence for absolute long photoperiod requirement of rest completion was observed.

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Section: Introductionmentioning

confidence: 90%

Bud burst in Norway spruce (Picea abies): preliminary evidence for age-specific rest patterns

Partanen¹,

Hänninen

Häkkinen³

2004

Trees

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“…However, photoperiod may have effects similar to those of low temperatures for rest break. Long days compensate partially for a lack of chilling during rest break in Pinus sylvestris L. (Jensen andGatherum 1965, Hoffman andLyr 1967), Picea abies (L.) Karst. (Nienstaedt 1967, Worrall andMergen 1967) and several other tree species (Nienstaedt 1966, Farmer 1968, Campbell and Sugano 1975, Hinesley 1982, Garber 1983.…”

Section: Introductionmentioning

confidence: 99%

Effect of accumulated duration of the light period on bud burst in Norway spruce (Picea abies) of varying ages

Partanen¹,

Leinonen²,

Repo³

2001

Silva Fenn.

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One-year-old seedlings (two sowing times), two-year-old seedlings and 14-and 18-yearold cuttings of Norway spruce (Picea abies (L.) Karst.) were exposed to shortening photoperiod (initially 16 h), lengthening photoperiod (initially 6 h) and constant short photoperiod (6 h) treatments with uniform temperature conditions in growth chambers. The timing of bud burst was examined. In all plants, shortening photoperiod treatment seemed to promote bud burst compared with other treatments. This effect was clearest in the oldest material. The results suggest that, in addition to temperature sum, the accumulated duration of the light period may promote bud burst of Norway spruce.

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“…The provenance affects the photoperiodic response of Scots pine (Vaartaja 1954;Wettstein-Westersheim & Grull 1954;Jensen & Gatherum 1965). An increase in numbers of both male and female flowers under long-day conditions is reported by Wareing & Longman (1960).…”

Section: A Carlisle and A H F Brown 277mentioning

confidence: 98%

“…Downs & Borthwick (1956) and Jensen & Gatherum (1965) have shown complex interactions between temperature and day-length. At the longer day lengths of 16-20 h height growth was greater at 13.30 C than at 21.70 C, whereas at 12 h day length the higher temperature led to the greater height (Jensen and Gatherum 1965). Needle length is reduced by short days (Wareing 1950b).…”

Section: A Carlisle and A H F Brown 277mentioning

confidence: 99%

Pinus Sylvestris L.

Carlisle¹,

Brown²

1968

The Journal of Ecology

148

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show abstract

Effects of temperature, photoperiod and provenance on the growth and development of Scotch pine seedlings

Cited by 7 publications

References 3 publications

Bud burst in Norway spruce (Picea abies): preliminary evidence for age-specific rest patterns

Bud burst in Norway spruce (Picea abies): preliminary evidence for age-specific rest patterns

Effect of accumulated duration of the light period on bud burst in Norway spruce (Picea abies) of varying ages

Pinus Sylvestris L.

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