论文部分内容阅读
【目的】选育适生于帽儿山、带岭、露水河试验地及毗邻地区的生产力高、稳定性好的水曲柳种源。【方法】以帽儿山、带岭与露水河等试点的20个水曲柳种源为材料,对其14年生树高、胸径和材积进行调查并进行单点、多点方差分析与多重比较,然后用Eberhart&Russell联合回归分析法的回归系数bi对20个水曲柳种源进行稳定性分析,最后用趋势面对水曲柳的地理变异进行分析。【结果】1)水曲柳树高、胸径和材积在种源间、地点间、种源和地点交互作用间差异均极显著;其中露水河试点树高较大的种源依次为海林(7.55 m)、带岭(7.34 m)、露水河(7.05 m),胸径较大的种源依次为海林(6.13 cm)、露水河(5.47 cm),材积最大的种源为海林(14 909 cm3);帽儿山试点树高最大的种源为五常(7.62 m),胸径最大的种源为五常(6.79 cm),材积最大的种源为五常(16 747 cm3);带岭试点树高较大的种源依次为兴隆(5.67 m)、临江(5.65 m)、东方红(5.61 m),胸径最大的种源为临江(5.07 cm),材积最大的种源为临江(7 984 cm3)。3个试点树高表现优良的种源为五常(6.35 m);胸径最大的种源为临江(5.35 cm);材积最大的种源为海林(10 546 cm3)、材积排名第二的种源为五常(9 857 cm3)、材积排名第三的种源为临江(9 818 cm3)。2)稳定性分析结果表明友好、临江、西丰、带岭、汪清、汤旺河6个种源具有平均稳定性,兴隆、露水河、恒仁、海林、弯甸子、绥棱、三岔子7个种源具有高稳定性,辉南、帽儿山、方正、东方红、沾河、桦南、五常7个种源稳定性较差,在有利的环境条件下才具有很大的丰产潜力。3)地理变异分析表明纬度对水曲柳生长具有较大的影响,在西北—东南这一条直线附近的种源材积较高,随着与西北—东南一线距离的增大而降低。【结论】通过比较2年、6年与14年林龄的种源选择结果,发现相对于2年林龄,6年林龄的选择结果与14年林龄的选择结果更为接近,表明种源选择时期不宜过早。本研究的结果可为我国水曲柳的种质资源管理与持续改良提供积极参考。
【Objective】 The objective of this study was to breed high-yielding and stable Ashbeck provenances suitable for breeding in the areas of Maoershan, Zhaoling, Lushuihe and adjacent areas. 【Method】 The 20-year-old provenances from Maoershan, Zailing and Lushui rivers were used as materials to investigate their 14-year-old tree height, diameter at breast height and volume, and single-point and multi-point analysis of variance and multiple comparisons , And then using the regression coefficient bi of Eberhart & Russell regression analysis method to analyze the stability of 20 Ash species provenances, and finally analyzing the geographical variation of Manchurian ash with trend. 【Result】 The results showed that there was significant difference in tree height, DBH and volume between different provenances, between sites, provenance and place of interaction. Among the provenances, the larger tree provenance of Lushui River was Hailin (7.55 (7.34 m) and dew river (7.05 m). The provenances with larger DBH were Hailin (6.13 cm) and Lu River (5.47 cm), with the largest provenance of Hailin (14 909) cm3. The highest tree height of provenances in Maoershan Mountain was of five habitats (7.62 m), and the largest diameter of provenances was quintuple (6.79 cm) and the largest provenance was Quercus variabilis (16747 cm3) The largest provenances were Xinglong (5.67 m), Linjiang (5.65 m) and Dongfanghong (5.61 m), with the largest DBH provenance at Linjiang (5.07 cm) and the largest provenance at Linjiang (7) 984 cm3). The best provenances of the three pilot trees were five habitats (6.35 m), the largest provenance of DBH was Linjiang (5.35 cm), the largest source of provenances was Hailin (10 546 cm 3), and the second highest seed volume The source is Wuchang (9 857 cm3), and the third highest volume source is Linjiang (9 818 cm3). 2) The stability analysis showed that the six provenances of Linjiang, Xifeng, Ziling, Wangqing and Tangwang rivers have the average stability. Xinglong, Lushuihe, Hengren, Hailin, Beidianzi, Suiling, Seven provenances had high stability. Seven provenances of Huinan, Maoershan, Founder, Dongfanghong, Zhanhe, Huanan and Wuchang were poorly stable and had great yield potential under favorable environmental conditions . 3) The analysis of geographical variation shows that latitude has a great influence on the growth of Fraxinus mandshurica. The provenance volume near the straight line from northwest to southeast is higher and decreases with the distance from northwest to southeast. 【Conclusion】 By comparing the results of provenances selection of 2 years, 6 years and 14 years of age, we found that the selection result of 6-year-old tree is closer to that of 14-year old tree relative to 2-year old tree, Source selection period should not be too early. The results of this study can provide a positive reference for the management and continuous improvement of the germplasm resources of Chinese ash.