scholarly journals Mobilization and Incorporation of Photoassimilated 14C by Growing Vegetative and Reproductive Tissues of Adult Pinus resinosa Ait. Trees

1970 ◽  
Vol 45 (3) ◽  
pp. 284-288 ◽  
Author(s):  
D. I. Dickmann ◽  
T. T. Kozlowski
2000 ◽  
Vol 35 (3-4) ◽  
pp. 134-141 ◽  
Author(s):  
R Ivell ◽  
A-R Fuchs ◽  
R Bathgate ◽  
G Tillmann ◽  
T Kimura

Author(s):  
Federica Cariati ◽  
Vincenzo Gigantino ◽  
Giorgio Coppola ◽  
Claudia Pivonello ◽  
Mariano Galdiero ◽  
...  

1986 ◽  
Vol 64 (12) ◽  
pp. 2922-2927
Author(s):  
A. Jana ◽  
S. P. Sen

Leaf nuclei of vegetative and reproductive plants of Xanthium strumarium L. were incubated with the postribosomal supernatant of either phase and changes at the transcriptional level were studied in homologous and heterologous combinations. In the presence of the supernatant of reproductive plants, RNA synthesis by vegetative nuclei was decreased by 25%. Reproductive nuclei were less active in RNA synthesis. Gel electrophoretic studies revealed four RNA bands in vegetative nuclei incubated with reproductive supernatant, including a fast-moving low molecular weight band that could not be detected when the "vegetative" supernatant was used. The adenine/uracil ratios of the newly synthesized RNA of vegetative nuclei treated with vegetative and reproductive supernatants were 1.46 and 1.54, respectively, compared with 1.15 and 1.04 in the reproductive nuclei. Competitive DNA–RNA hybridization experiments indicated that about 2% of the [3H]RNA synthesized by nuclei of vegetative plants in the presence of the supernatant of reproductive plants could not be beaten out by the RNA of vegetative plants. Small quantitative differences, thus, may be expected in the RNA molecules synthesized by nuclei in the presence of the supernatant fraction of vegetative and reproductive plants. The supernatant fraction of the reproductive tissues decreased the incorporation of [3H]alanine and [3H]leucine in both the buffer-soluble and acid-soluble proteins and the nuclei of vegetative plants were more active in protein synthesis. Protein patterns as studied by acrylamide gel electrophoresis revealed alterations when vegetative leaf nuclei were incubated with the supernatant of reproductive tissues.


2010 ◽  
Vol 86 (3) ◽  
pp. 348-353 ◽  
Author(s):  
Ali A Rahi ◽  
Colin Bowling ◽  
Dale Simpson

Survival, total height and diameter at breast height (DBH) were measured in the fall of 2005 in a 48-year-old red pine (Pinus resinosa Ait.) provenance trial growing in northwestern Ontario. There was significant variation in both height and diameter among the 23 provenances. Generally, westerly provenances performed well while those from the Maritime Provinces exhibited relatively poor growth. Considering that the plantation is at the northern biological range of red pine, survival was high, averaging 96% after 48 years. Provenances with the best growth rates exceeded a volume of 420 m3 ha-1. Some provenances from Minnesota and Wisconsin as well as Fort Frances, Ontario exhibited superior growth and should be considered as seed sources for future planting programs in northwestern Ontario. Key words: red pine, provenance test, survival, diameter, height, volume, Northwestern Ontario


1983 ◽  
Vol 91 (5) ◽  
pp. 405-410 ◽  
Author(s):  
K. Venkatarami Reddy ◽  
N. Geethanjali ◽  
Y. Dhananjaya Reddy ◽  
P. Reddanna ◽  
S. Govindappa

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