黑杨树冠雌花分布与少絮无性系的选择
Distribution Pattern of Female Flowers in Crown and Less Catkins Clones Selection of Aigeiros
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摘要: 以美洲黑杨种内杂交得到的29个后代雌株为材料,对杨絮的空间分布、杨絮量、结实量、生长量等相关的10个数量性状进行调查分析,研究了杨絮的影响因素,并筛选杨树少絮优良无性系. 结果表明:杨絮主要集中于树冠的集花区,花枝数、果序数、杨絮量及种子量在冠层中的分布均表现为中部>上部>下部. 单株杨絮量与单株花枝数及平均冠幅呈极显著相关,与平均胸径、集花区长、单果序种子数、单株果序数、单株种子数呈显著相关;与树高及枝下高不相关. 遗传变异分析表明:各性状在杂交子代中均达到极显著差异且大都属于高水平重复力,且差异主要受遗传因素控制. 从调查的8个相关性状中选出可代表杨絮量、集花区、单果序结实量等相关指标的3个主成分,代表了8个调查性状信息总量的75.487%. 最后,依据主成分得分及相关性状综合评选出了92、121和260三个少絮无性系.Abstract: To determine the factors influencing the spatial distribution of poplar catkins, and to screen poplar clones for fewer catkins, 10 quantitative traits related to the quantity of poplar catkins, seed yields and growth increments were measured on 29 female plant clones in the F2 generation of an intraspecific cross of Populus deltoides. The results indicated that the poplar catkins were mainly distributed in tree crowns, with the amount of flowering branches, infructescences, poplar catkins and seed yields being the highest in the middle layer of the crown, the lowest in the lowest layer and intermediate in the highest layer of the crown. The quantity of poplar catkins produced by an individual plant was significantly positively correlated with the mean crown range, and the amount of flowering branchs of individual plant,additionally, was significantly positive correlation with the diameter at breast height (DBH), the length of catkin concentration, the seed amount of each infructescence, the infructescence amount of each plant, and the seed amount of each plant,but was not correlated with tree height and height under branches. These traits varied significantly among hybrid progeny showing high repeatability, indicating that the trait variation was controlled by genetic factors. Three principal components, representing the quantity of catkins, the catkin concentration, the seed yields of each infructescence and other related indicators, were extracted from the 8 correlation characters investigated, and in combination represented 75.487% of total information for the 8 characters. Based on ranking of principal component scores and related traits, all the traits were comprehensively evaluated and 92 121 and 260 three clones with fewer catkins were obtained.
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[1] 马 骏. 美洲黑杨引种及其栽培管理[J]. 云南林业,2012, 33(3):62-63. [2] 王建红,车少臣,邵金丽,等. 北京杨柳飞絮治理现状、问题与展望[J]. 北京园林,2011, 27(1):48-50. [3] Hu Y Q, Ferguson D K, Bera S, et al. Seed hairs of poplar trees as natural airborne pollen trap for allergenic pollen grains[J]. Grana, 2008, 47(3):241-245. [4] 方炎明. 植物生殖生态学[M]. 济南:山东大学出版社,1996. [5] 苏智先, 张素兰. 植物生殖生态学研究进展[J]. 生态学杂志,1998, 17(1):39-46. [6] Delph,L F. Factors affecting intraplant variation in flowering and fruiting in the gynodioecious species Hehe subalpina[J]. Ecology, 1993, 81(2):287-296. [7] Smith-Ramirez C, Armesto J J. Flowering and fruiting pattern in the rain forest of Chiloe, Chile-ecologies and climatic constraints[J]. Ecology, 1994, 82(2):353-365. [8] Sork V L, Bramble J, Sexton O. Ecology of mast-fruiting in three species of North American deciduous oaks[J]. Ecology, 1993, 74(2):528-541. [9] Sutherland S. Patterns of fruit-Set: what controls fruit-flower ratios in plants[J]. Evolution, 1986, 40(1):117-128. [10] Cox P A. Vertebrate pollination and the maintenance of dioecism in Freycinetia[J]. The American Naturalist, 1982, 120(1):65-80. [11] 李志军,刘建平,周正立,等. 胡杨、灰叶胡杨花空间分布及数量特征研究[J]. 植物研究,2004, 24(3):278-283. [12] 魏玉玲,闫玉信,王建华,等. 美洲黑杨杂交新品种选育研究与推广[J]. 河南林业科技,2005, 25(1):8-10. [13] 黄国伟,苏晓华,黄秦军. 美洲黑杨不同生长势无性系生长和生理特征的差异[J]. 林业科学,2012, 48(4):27-34. [14] 李文文,黄秦军,丁昌俊. 南方型和北方型美洲黑杨幼苗光合作用的日季节变化[J]. 林业科学研究,2010, 23(2):227-233. [15] 胡建军,卢孟柱,赵自成,等.杨树良种'南杨'[J]. 林业科学,2013, 49(7):188. [16] 张春玲,李淑梅,赵自成,等.杨树新品种'丹红杨'[J]. 林业科学,2008, 44(1):169. [17] 续九如. 重复力及其在树木育种中的应用[J]. 北京林业大学学报, 1988, 12(10):97-101. [18] 余养福. 杉木优良无性系选择研究[J]. 林业勘察设计(福建),2005(2):77-80. [19] 王 建,魏 刚,刘昌迎,等. 银杏枝、花、种子在树冠上的分布格局及其相互关系研究[J]. 应用生态学报,2000, 11(2):185-189. [20] 祖元刚, 毛子军, 袁晓颖,等. 白桦的开花时间及生殖构件的数量与树龄和树冠层次的关系[J]. 生态学报,2000, 20(4):673-677. [21] 何 浩,戴 欢. 杨树多层次遗传变异研究[J]. 北京农业,2012(6):165-166. [22] 毛爱华.河南郏县侧柏种源、家系及无性系遗传变异与选择[D].北京:北京林业大学,2009. [23] 肖新华,张云跃,刘佳强,等. 银杏种源、家系、无性系选择研究[J]. 经济林研究,2002, 20(2):1-8. [24] 张红磊,丰 震,郭先锋,等. 牡丹花期的重复力与遗传相关分析[J]. 中国农学通报,2010, 26(14):243-246. [25] 郭宝林,杨俊霞,李永慈,等. 主成分分析法在仁用杏品种主要经济性状选种上的应用研究[J]. 林业科学,2000, 36(6):53-56. [26] 张志达. 中国竹林培育[M]. 北京:中国林业出版社,1998:1-44. [27] 周芳纯. 竹林培育学[M]. 北京:中国林业出版社,1998. [28] 孙 垟,肖千文, 黄丽媛,等. 核桃单株经济性状的主成分分析[J].四川农业大学学报, 2011, 29(2):185-190.
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