摘要
湿地松(Pinus elliottii Engelm.Var.clliottii)不仅是优良的工业用材树种,而且是松属树种中松脂产量最高、质量最好的树种之一。其采脂收益一直在林分总收益中占重要比重。 从本世纪40年代起,美国就开始了提高湿地松产脂力的林木遗传改良工作。
Wind pollinated progenies of 11 different high-gum-yielding Slash families have been tested at Xinyi County, Guangdong Province for oleoresin yield since 1986 (5 families) and 1989 (7 families). Oleoresin yield by means of chipping stem was measured in 1991 and the results showed that there were significant differences among families with age of 6 and 3 years respectively in oleoresin yield, height, DBH and crown growth. Genetic variation among families accounted for 13.08 %~28.90 % for basic oleoresin yield capacity (oleoresin yielded by level wound of 1cm length) and 9.70% -27.18 % for potential oleoresin yield capacity (basic oleoresin yield capacity multiplied by the circumference of stem). The averaged oleoresin yield of high-gum-yielding families for both, ages was about 61 % higher than those of the commercial seeds.
出处
《林业科学研究》
CSCD
北大核心
1992年第6期700-705,共6页
Forest Research
关键词
湿地松
产脂力
变异
Slash Pine oleoresin yield capacity
