文献类型：期刊文献

中文题名：不同无性系美国山核桃种子对其苗木根系生长影响的研究

英文题名：Root Growth of the Seedlings from Different Clone Lines of Pecan(Carya illinoensis Koch)

作者：常君[1] 姚小华[1] 王开良[1] 徐永星[2] 夏根清[2] 倪德良[2]

第一作者：常君

机构：[1]中国林业科学研究院亚热带林业研究所,国家林业局亚热带林木培育重点开放性实验室,浙江富阳311400;[2]建德林业局,浙江建德311600

年份：2009

卷号：34

期号：1

起止页码：109-114

中文期刊名：西南师范大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：国家林业局“948”引进项目(2006-4-82);科技部农业成果转化项目(2006GB24320401)

语种：中文

中文关键词：美国山核桃;根系;播种

外文关键词：Key words, pecan; root ; sowing

分类号：Q949.735

摘要：对不同无性系美国山核桃种子进行播种试验,以研究对其苗木及根系生长的影响.结果表明,不同无性系种子苗木地径、苗木高度、根系长度、根系表面积、地下部分干质量均表现出极显著差异,而根系体积、地上部分干质量和根/冠也表现出显著性差异.苗木地径最大为1.11 cm,为最小地径的1.33倍;苗木高度最大为51.96cm,为最小的1.65倍;根系长度最长可达1 490.01 cm,为最小值的2.11倍;根系表面积最大为500.51 cm2,为最小值的2.02倍;根系体积最大为16.12 cm3,为最小值的2.24倍.随着种子大小的减小,苗木各指标也表现出逐渐下降的趋势.因此,在育苗过程中,应该选择中等大小以上的无性系种子育苗,以培育优质苗木.
This experiment, conducted in Jiande, Zhejiang was mainly to study the growth of pecan seedlings and roots affected by different clones. The results showed that seedling height, root diameter, root length, root surface area and the dry weight of roots were highly significantly different with the size of the seed sown, and root volume, dry weight of the shoot and root/crown ratio were also different. The greatest basal diameter was 1.11 cm, or 1.33 times the smallest; the greatest height of the seedlings was 51.96 era, or 1.65 times higher than the shortest; the longest root was 1 490. O1 era, or 2.11 times the shortest;the biggest root surface area was 500.51 cm^2 , or 2.02 times bigger than the smallest; and the biggest root volume was 16.12 cm^3 , or 2.24 times bigger than the smallest. The above indexes tended to decline with decreasing seed size. It is, hence, concluded that in seed sowing, we should choose bigger seeds so as to cultivate quality seedlings.