长白落叶松生长变异及优良家系选择研究  

Genetic Variation on Growth Characters and Family Selection of Larix olgensis Henry

作　　者：王金宁 侯丹[2] 张含国[2] 王芳 孟庆丽 

机构地区：[1]宁安市渤海林木种子园,黑龙江牡丹江157400 [2]东北林业大学林木遗传育种国家重点实验室,哈尔滨150040 [3]喀喇沁旗旺业甸实验林场,内蒙古赤峰024423

出　　处：《森林工程》2018年第1期6-12,共7页Forest Engineering

基　　金：国家林业局推广项目([2017]06号);国家科技支撑项目(2012BAD01B0102)

摘　　要：以黑龙江省宁安市渤海种子园25年生长白落叶松自由授粉家系子代测定林为研究对象,基于树高、胸径与材积等指标,利用变异分析、方差分析和多重比较等方法,分别在第10区和第11区各筛选出3个长白落叶松优良家系。结果表明:树高、胸径和材积都存在较大变异,变异系数的平均值分别为13.30%、20.76%、47.66%。10区变异大的3个家系为168、151、132,变异系数平均为28.09%;变异小的3个家系为186、102、103,变异系数平均为21.78%。11区变异大的3个家系为191、193、121,变异系数平均为31.67%;变异小的3个家系为101、104、110,变异系数平均为18.96%。方差分析结果表明,家系间树高、胸径与材积存在显著或极显著差异。树高、胸径及材积家系遗传力平均依次为60.1%、57.4%、66.0%。入选率10%时,遗传增益平均依次为13.88%、20.93%、55.36%。以材积性状作为选优标准,按入选率15%,10区和11区分别选出3个长白落叶松优良家系,10区选出的家系为121、186、119,11区选出的家系为112、101、180。A study was conducted to analyze tree height, diameter at breast height （ DBH） , and volume of 2 5 -year-old larch （/ar- ix olgensis）progeny testing forests in Bohai Seed orchard, Ning’an City, Heilongjiang Province. Mutation analysis, variance analysis and multiple comparisons were used to select the three superior families at district 10 and district 11. Results show that there were abun-dant variations in the above three characters between and within families, and coefficients of variation for tree height, DBH, and vol-ume were 13. 30% , 20. 76% , and 47. 66%. At district 10, the three families with large variations were 168, 151 and 132, with the mean variation coefficients of 28. 09% ; and the three families with small variations were 186, 102 and 1 03 , with the mean varia-tion coefficients of 21. 78% . The results of variance analysis showed that there were significantly or extremely significantly differences in tree height, DBH, and volume between families. The family heritability for height, DBH and volume were 60. 1 % , 57. 4% , and 66. 0% . Under the selection rate of 10% , the genetic gains of tree height, DBH and volume were 13. 88% , 20. 93% and 55. 36% . Under the selection rate of 15% , three elite families, 121, 186 and 119, were screened out from 20 families according to the volume traits from district 10. Meanwhile, three elite families, 112, 101 and 180, were screened out from district 11.

关 键 词：落叶松 生长性状 遗传变异 遗传增益 家系选择 

分 类 号：S791[农业科学—林木遗传育种]