Seed Production of Pinus greggii Engelm. in Natural Stands in Mexico
Five cones of Pinus greggii Engelm. were collected from each of 117 trees at 12 widely separated sites in Mexico to examine their seed potential and efficiency. Seed efficiency of P. greggii in natural stands was 63% rangewide. Differences were found in seed-yield traits related to geographical location. Trees in southern stands in the states of Hidalgo and Queretaro had greater seed potential (117 versus 91 seeds/cone) and produced more filled seeds per cone (74 versus 46) than trees in northern stands in Coahuila and Nuevo Leon. Trees in northern stands had more first-year aborted seeds per cone (42 versus 32) and three times more insect-damaged seeds than trees in southern stands in 1993. Tree Planters' Notes 46(3):86-92; 1995.
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Author(s): Javier López-Upton, Jeffrey K. Donahue
Publication: Tree Planters' Notes - Volumes 46, Number 3 (1995)
Section: Peer Reviewed and Refereed Articles
Volume: 46
Number: 3
