Evaluation of morphological diversity and reproductive potential of dwarf pines in Shirinskaya forest-steppe

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• 作者：I. V. Tikhonova (1)
  
• 关键词：dwarfism of growth ; adaptation ; morphological variability ; fruiting
• 刊名：Contemporary Problems of Ecology
• 出版年：2011
• 出版时间：December 2011
• 年：2011
• 卷：4
• 期：6
• 页码：658-664
• 全文大小：177KB
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• 作者单位：I. V. Tikhonova (1)
  
  1. V. N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/28, Krasnoyarsk, 660026, Russia
  

文摘

Dwarf and typical trees of Pinus silvestris L. in Shirinskaya forest-steppe are compared on variability of vegetative and generative organs and quantitative and qualitative characteristics of fruiting. Special attention is paid to investigation of the correlation structure of characters in the compared samples. It has been determined that the dwarf pines are characterized by high variability of dimensional and qualitative characteristics. In spite of generally low reproductive potential of dwarf trees some species are distinguished by regular and abundant fruiting. They are characterized by higher correlation of characteristics and tendency to gonochorism. In spite of generally small contribution of dwarf species into the reproduction of pine population, it is quite consistent with the small area occupied by rocks within the studied territory. Some species are distinguished by higher reproductive potential and may be used to solve the problems of selection.