JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2012, Vol. 36 ›› Issue (06): 143-146.doi: 10.3969/j.jssn.1000-2006.2012.06.029

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Variation in cone morphology and seed characteristics for Pinus massoniana Lamb., P. taiwanensis Hayata, and their hybrid zone

QU Jiteng, YAN Maomao, DAI Xiaogang,LI Shuxian*   

  1. Key Laboratory of Forest Genetics and Biotechnology Ministry of Education, College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
  • Online:2012-11-30 Published:2012-11-30

Abstract: The cones and seeds of Pinus were collected from different elevations of Mt. Huang in Anhui province. Six characteristics of cone and seed, including cone length, cone width, cone length to width ratio, seed plumpness, germination rate and weight per thousand seeds, were analyzed to reveal the variation trends with elevations. The results indicated that cone length, cone width, cone length to width rate decreased with increasing elevation. Seed plumpness, germination rate and weight per thousand seeds were lower for plants in hybrid zone than that of the other zones. We propose it may relate to the reproduction barrier between P. massoniana and P. taiwanensis. It was note that the variation of cone and seed arose among individual trees, and traits were majorly commonly diverged among individuals at different elevations.

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