PERFORMANCE OF SCOTCH PINE RACES UNDER PRAIRIE CONDITIONS | Zendy

W. H. Cram | Zendy; C. G. E. Brack | Zendy

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PERFORMANCE OF SCOTCH PINE RACES UNDER PRAIRIE CONDITIONS

Author(s) -

W. H. Cram,

C. G. E. Brack

Publication year - 1953

Publication title -

the forestry chronicle

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.335

H-Index - 49

eISSN - 1499-9315

pISSN - 0015-7546

DOI - 10.5558/tfc29334-4

Subject(s) - race (biology) , biology , pinus <genus> , selection (genetic algorithm) , horticulture , botany , agronomy , computer science , artificial intelligence

A study was made of the vigor and seed crops of trees comprising six geographic races of PINUS SYLVESTRIS L. The Scottish race exhibited superior vigor and the Russian race highest survival after 41 years of growth, while the Rigensis race proved the most consistent producer of cones in the 1947 to 1952 period. The seeds-per-cone, seed-weight and seed-viability values varied greatly from year to year for individual trees of all races. Thus it would appear that selection of seed trees on the basis of seed characteristics alone has little merit.

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