黔杉1号～4号杉木良种选育

The Selection of Superior Varieties of Qianshan NO.1 ～ NO.4 of Cunninghamia lanceolata

为选育优质速生杉木繁殖材料,扩大杉木遗传改良遗传基础,1992年在黎平县营建了多父本杂交试验测定林,通过子代测定和区域测试,评选的4个最优家系命名为黔杉1号、黔杉2号、黔杉3号、黔杉4号,通过了贵州省林木品种委员会审定。应用黔杉1号~4号杉木良种苗木在贵州杉木中心产区立地指数16以上的立地造林,材积遗传增益分别比优良种源、优良半同胞家系和初级种子园提高37.1%、12.0%、29.6%。

In order to select high quality fast-growing Cunninghamia lanceolata reproduction materials and expand the basis for genetic improvement of Cunninghamia lanceolata,a multi paternal hybrid test forest was built in Liping County in 1992. Qianshan NO. 1,Qianshan NO. 2,Qianshan NO. 3,Qianshan NO. 4 were superior varieties selected through progeny and region test,which were approved by the Forest Variety Committee of Guizhou province. The superior seedlings of Cunninghamia lanceolata of Qianshan NO. 1 ~ 4 were planted in area of over 16 site index in the central reproduction region of Guizhou Cunninghamia lanceolate. The genetic gain of volume increment was 37. 1%,12% and 29. 6% higher than that of superior provenance,superior half-sib and primary seed orchard respectively.