杉木优良变异类型——罗田垂枝杉生物学特性研究

Study on Biological Characteristics of Cunninghamia laceolata(Lamb.)Hk.cv.Luotian——A Superior Variation of Cunninghamia laceolata

摘要: 罗田垂枝杉是20世纪70年代中期在湖北省罗田县发现的杉木自然变异类型,在与黄枝杉比较的基础上,对罗田垂枝杉的形态变异特征和生物学特性进行了深入的调查研究,其形态特征与其它杉木类型的主要区别是:2~3年生的侧枝自然下垂,6~7年生的老枝自然脱落,树冠窄小,是具有遗传改良品质和较高利用价值的种质资源。

Abstract: Cunninghamia laceolata(Lamb.)Hk.cv. Luotian is a natural variation of Chinese-fir discovered in Luotian County of Hubei Province in middle of 1970’s.Based on the comparison with C.laceolata cv.‘Laceolata’,the characteristic of morphological variation and biological character of C.laceolata cv.Luotian have been investigated and studied.The main morphological characteristic which distinguishes C.laceolata cv.Luotian from common Chinese-fir are that the 2-3 years offshoot is naturally drooping and(6-7) years old shoot come off naturally,the tree crown is narrow.C.laceolata cv.Luotian is a kind of genetic resources with genetic improvement character and high value in use.