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造林技术规程在生态建设中的应用
黄土丘陵区 造林技术 生态建设 应用
2009/11/12
在介绍宁夏南部山区概况的基础上，分析了宁南山区生态建设存在的主要问题，并探讨了造林技术规程在宁南山区生态建设中的应用。
［目的］ 促进丝棉木种苗的快速繁殖并保持其优良性状。［方法］ 以丝棉木的嫩茎、叶片为材料，消毒后接种在不同激素水平的MS培养基上诱导产生幼苗。［结果］ 培养基MS + 6BA 0.3 mg/L + NAA 0.10 mg/L是丝棉木外植体诱导产生腋芽的最佳培养基。丝棉木叶片在培养基MS + 6BA 0.3 mg/L + NAA 0.10 mg/L + 2，4D 0.05 mg/L上能成功诱导...
印楝（Azadirachta indicaA.）高频植株再生系统的建立
印楝 组织培养 快繁
2009/11/10
［目的］ 建立印楝高频植株再生系统。［方法］ 以印楝带芽茎段为外植体，以MS为基本培养基，分别附加6BA 0.1、0.3、0.5、08、1.0 mg/L和NAA 0、0.1、0.3、0.5 mg/L组配14个培养基配方处理进行芽分化的诱导培养试验，生根培养采用MS+IBA 0.2 mg/L、1/2MS和MS的3种培养基，研究外植体最适宜的消毒时间和取材部位，筛选诱导印楝芽分化和生根的最佳培养基...
优质高产抗旱新桑品种川826选育
辐射 复合杂交 桑品种 川826
2009/11/10
［目的］以优质、高产、抗逆为育种目标，对桑树新品种种质资源进行系统鉴定和综合评价。
［方法］采用辐射与复合杂交相结合的育种方法，选育优质、高产、高抗桑树新品种，通过四川省桑品种区域试验和农村生产试验进行鉴定。
［结果］新品种川826发芽率高、枝条直立、生长势旺；全年平均公顷桑产叶量比对照湖桑32号高13.95%；桑叶养蚕的万蚕产茧量比对照高8.88%, 万蚕产茧层量比对照高8.8%，5龄担桑产...
Seed Dispersal by Frugivorous Birds in a Coniferous Plantation
mixed conifer/broad-leaved forest frugivorous bird Japanese cedar plantation seed dispersal seed rain
2009/8/28
In order to evaluate the role of frugivorous birds in the dispersal of broad-leaved tree seeds in a plantation of Japanese cedar, Cryptomeria japonica D. Don, we monitored seed rain with 120 seed trap...
Discrimination of Sugi (Cryptomeria japonica D. Don) Plus-tree Clones Using SSR Marker Analysis
clone discrimination discrimination power SSR marker sugi plus tree
2009/8/28
Eight hundred and thirty-five sugi (Cryptomerica japonica D. Don) plus-tree clones from the Kanto Breeding Region were genotyped using three highly polymorphic SSR markers. With a mean observed hetero...
Effect of Seed Caching by Parus varius on Germination in Styrax japonica
Japanese snowbell saponin scatterhoard seed dispersal varied tit
2009/8/28
We examined the seed dispersal and germination of Styrax japonica to determine the effects of the fruit pulp involving saponin and its removal by the varied tit (Parus varius) on the seed germination ...
Seed Rot of Post-dispersal Prunus verecunda Seeds Induced by Sucking of Macroscytus japonensis
burrower bug cherry Cydnidae fungus seed predation
2009/8/28
We examined pre- and post-dispersal seed predation in Prunus verecunda in a deciduous broad-leaved forest, northern Japan. Few seeds died before dispersal, but most seeds were preyed upon by small rod...
Migration and Population Growth of the Pine Wood Nematode (Bursaphelenchus xylophilus) Related to the Symptom Development in the Seedlings of Japanese Black Pine (Pinus thunbergii) Families Selected as Resistant to Pine Wilt
breeding Bursaphelenchus xylophilus pine wilt resin canal resistance
2009/8/27
To obtain the pine trees with high resistance to the pine wilt from susceptible species, the criteria for selective breeding should be made based on the inhibition factors of symptom development. Migr...
Influences of Mast Seeding on Tree Growth Dynamics of Fagus crenata and Fagus japonica in Central Honshu,Japan
Fagus crenata Fagus japonica mast seeding leaf litterfall basal area increment
2009/8/24
We investigated influences of mast seeding on tree growth, in relation to beech tree species Fagus crenata and F.japonica dynamics of leaf litterfall. The study objective was to clarify any relations ...
The Species Composition of Soil Seed Banks in the Ooyamazawa Riparian Forest,in the Chichibu Mountains,Central Japan
Betula grossa Euptelea polyandra Fraxinus platypoda stand germination test zoochorous seed
2009/8/24
We examined the species composition of soil seed banks (to 5 cm depth), using germination tests, for the Ooyamazawa riparian forest in the Chichibu Mountains. The canopy of this forest is dominated by...
Mosaic Structure of Riparian Forest Vegetation in the Valley Bottom of the Yubiso River,Japan,with Reference to Stand Formation of Threatened Species,Salix hukaoana
conservation disturbance regime floodplain Salix hukaoana topographic unit
2009/8/24
This study examined the environmental conditions that were required to maintain a threatened species, Salix hukaoana. Twenty-five plots were set up in the riparian zone along the Yubiso River, and for...
Current Status and Future of Biotechnology in Forest Tree Breeding Research in Japan
forest tree breeding biotechnology DNA analysis tissue culture transformation
2009/8/21
Biotechnology in forest tree breeding research in Japan is summarized including some important research held in abroad. In DNA analysis it is very important to select adequate kind of marker for each ...
白蜡苗木质量分级标准研究
白蜡 苗木质量 分级标准
2009/7/17
对河北沧州、保定、唐山、秦皇岛、廊坊、石家庄、衡水7 市的苗圃进行了抽样调查, 测定了6 个类型苗木的地径、苗高、密度及各径级苗木的根系数量, 计算了各类型苗木地径、苗高的平均值和标准差, 以平均值加0 .5 倍标准差为I 级苗木下限、平均值减1 倍标准差为II 级苗木下限确定了合格苗木的质量分级标准。