粤海竹柳病虫害调查

竹柳Salix Zhuliu为杨柳科Salicaceae柳属Salix植物[1],乔木,生长潜力大,在国内分布很广,是新的柳树杂交品种,具有竹和柳的特性[2-4]。粤海竹柳农林公司首次将竹柳引种到广东省珠海市试验种植,以期观察竹柳的生长情况,评估其是否适合在广东推广,作者调查了广东省竹柳种植基地的病虫害发生情况。

胡杨地理分布特征与气候环境的相关性分析(英文)

[目的]研究胡杨地理分布区域气候环境特征和变化规律以及胡杨自身对环境气候的适应性。[方法]在综述胡杨树种概况和地理分布的基础上,对胡杨分布区气候、水资源、地下水特征、土壤类型以及人类活动影响等进行了综合分析。[结果]特殊的区域气候环境条件以及长期的人类活动干扰是影响胡杨生长的主要因素。胡杨叶形的变化是对气候环境适应的明显特征,胡杨通过调节酚类次生代谢物质在体内的合成、转运和转化等过程来抵御极端干旱环境下各种环境因子的胁迫。有效的保护和更新复壮措施以及生态输水工程对于恢复和重建受损的胡杨林绿洲生态环境作用显著。[结论]该研究对于中国西北内陆干旱地区生态环境恢复建设具有重要意义。

Genome-wide identification and characterization of WUSCHEL-related homeobox(WOX) genes in Salix suchowensis

Members of the WUSCHEL-related homeobox(WOX)transcription factor family are essential for determining cell fate and regulating diverse developmental processes in plants.Many WOX genes have been systematically investigated in woody plants such as Populus trichocarpa,but not in Salix suchowensis.Whole-genome sequence data for S.suchowensis is now available for comprehensive study of WOX genes in S.suchowensis.We thus surveyed the genome of S.suchowensis and demonstrated active expression of 15 WOX genes.In a phylogenetic analysis of WOX genes,the 15 SsWOX genes clustered among the modern/WUS,intermediate and ancient clades similar to the WOX genes of Arabidopsis thaliana.Based on the conserved intron/exon structure,SsWOX genes in the same subgroup had similar conserved exon–intron structures and motif domains.Furthermore,among several SsWOX subgroups,WUS(Wuschel)-box and EAR(the ERF-associated amphiphilic repression)-like motifs were conserved.Expression profiles of WOX genes in roots,stems and leaves indicate that SsWOX genes have various conserved roles in the tissues.Comparative analysis of the expression patterns in Salix suchowensis with that of Arabidopsis suggests that different shoot regeneration abilities are controlled by different WOX genes in plants.The analysis provide an overview of differentially expressed SsWOX genes during shoot regeneration,but also contribute to understanding the evolution of WOX genes in Salicaceae and the interrelations of WOX genes and other transcription factors,providing targets for further study.

灌木柳栽培技术的推广

1 目的意义灌木柳为杨柳科(Salicaceae)、杨属(Salix)灌木品种的统称,分布范围很广。适应辽宁生长的乡土树种就有蒙古柳、簸箕柳、三蕊柳等十几个品种。灌木柳适应性很强,喜光、抗旱、耐涝、耐盐碱,喜生于河边、沟坡、低湿地,特别是在河滩地上的生长最佳。生长在大洼县东风农场大岗分场辽河滩地上的灌木柳,1987年经大水蒙头7天,待水退后。