蒙古栎硝酸还原酶活性、叶绿素及可溶性蛋白含量与生长性状的关系   总被引：8，自引：0，他引：8  

张杰  杨传平  邹学忠  刘长莉  卢建周 《东北林业大学学报》2005,33(4):4-5

对蒙古栎8个不同的种源进行了硝酸还原酶活性、叶绿素及可溶性蛋白含量的测定。结果表明：蒙古栎不同种源间硝酸还原酶活性、叶绿素含量及可溶性蛋白间存在明显差异,且与生长性状呈极显著的正相关。硝酸还原酶活性、叶绿素、可溶性蛋白含量可作为蒙古栎早期选择的生理指标。参试的集安种源的硝酸还原酶活性、可溶性蛋白含量及叶绿素含量均较高,可初步认为是优良种源。  相似文献   

15个油茶种源栽培技术及产量分析     

唐文  张敏  邓荫伟  姚吉霞  杜忠 《安徽农业科学》2017,45(4)

介绍了油茶林的栽培技术,并分析其平均单株产果量。结果表明,在15个油茶种源中,岑软油茶的平均单株产果量为7.46 kg,明显高于其他种源;其次是龙胜毛茶、常山霜降籽、衡东大桃、安徽大红,其平均单株产果量分别为6.18、5.59、5.44、5.20 kg,而其他种源的平均单株产果量较低,不适宜在桂林产区种植。在油茶生产发展中,除选择种源外,选择种源的良种更重要,要使其达到丰产稳产,必须选用适宜该地区的良种,定植后加强抚育、施肥与病虫害防治等,促进油茶植株生长旺盛。  相似文献   

引进欧洲垂枝桦不同种源苗期选择研究     

梁立东 《林业科技》2019,(4):15-18

以引进欧洲垂枝桦不同种源为对象,并以本地白桦种源作为对照,研究引进欧洲垂枝桦不同种源的种子形态特征、发芽特性和在黑河地区的苗期生长表现。结果表明:引进欧洲垂枝桦不同种源在种子长度、种子宽度、种翅长度、种翅宽度、千粒重、发芽率、发芽势、发芽指数、活力指数、苗高、地径、地上生物量、地下生物量和全株生物量存在显著差异,而且引进欧洲垂枝桦不同种源这些指标都显著高于本地白桦对照种源,综合分析表明,引进欧洲垂枝桦新西伯利亚种源在种子形态特征、发芽特性和在黑河地区的苗期生长表现均优,可作为黑河地区欧洲垂枝桦育苗的首选种源。  相似文献   

长白落叶松种源区区划的研究   总被引：2，自引：0，他引：2  

杨传平  杨书文 《东北林业大学学报》1991,19(3):28-34

根据凉水、帽儿山、草河口和龙江四个代表试点10年生种源试验的资料:树木生长、物候、材性、形态、种子品质、适应性和抗性等性状,采用主分量分析(PCA)的方法,参考了气候、地形、土壤和植被区划的结果,将长白落叶松天然分布区域划分成四个种源区,即白刀山种源区(编号Ⅰ)、小北湖种源区(编号Ⅱ)、白河种源区(编号Ⅲ)和桓仁种源区(编号Ⅳ)。  相似文献   

熵和自然选择压及其在林木群体遗传学中的应用   总被引：3，自引：1，他引：2  

庞广昌  徐纬英 《林业科学》1991,27(5):526-533

本文首先导出自然选择的定量模型,然后对青杨14个种源、樟子松6个种源的600多个个体的酯酶同工酶谱进行分析。同时也分析了国外有关杂志发表的三个有代表性的试验,并与其它方法进行比较,证明该理论除能解决其它方法所不能解决的一些重要问题外,还具有统计分析便利、适用广,便于多学科合作等特点,有广泛的应用潜力。  相似文献   

福建绿竹优良种源及单丛选择试验   总被引：2，自引：0，他引：2  

郑维鹏 《竹子研究汇刊》2005,24(1):32-36

以实地生长的绿竹为基础材料,造林3年后通过对永安和龙海试验点各种源不同性状的遗传增益计算,结果表明:永安试验点遗传增益大部分为正值,福安、永安、永春和漳平等种源在永安有较大的推广前景,漳州、永安和龙岩号等种源适应在龙海生长.适合在永安栽培的优良单丛分别为福安的第1丛、龙岩的第6丛和福安的第4丛,适合在龙海栽培的分别是永安的第1丛和漳州的第2丛.  相似文献   

Genetic variation and division of Pinus sylvestris provenances by ISSR markers     

Li Hui-yu  Jiang Jing  Liu Gui-feng  Ma Xu-jun  Dong Jing-xiang  Lin Shi-jie 《林业研究》2005,16(3):216-218

Inter Simple Sequence Repeat (ISSR) was used to detect genetic variation among nine provenances, including 135 individuals. A total of 108 loci were amplified using 10 random primers. The differentiation of the percentage of polymorphic bands (PPB) among different provenances was evident, ranging from 27% to 54%, of which Honghuaerji provenance had the highest PPB and Kalunshan provenance had the lowest PPB. Shannon's Information index (I) at species level was 0.1581 and Nei's gene diversity (h) was 0.2393. Coefficient of gene differentiation (G_ST) calculated by Popgene was 0.3965, these results indicated that majority of genetic variation (60.35%) was found within provenances. According to dendrogram amongpinus sylvestriv provenances, nine provenances were divided into two provenance areas, namely Daxing's and Xiaoxing'an Mountains provenance area and Hulunbeier provenance area. Foundation item: This study was supported by National Scientific and Technological Brainstorm Project. Biography: LI Hui-yu (1978-), female, Ph.D. candidate, Northeast Forestry University, Harbin 150040, P. R. China. Responsible editor: Song Funan  相似文献   

Variation in stem-growth and branch-wood traits among provenances of Calycophyllum spruceanum Benth. from the Peruvian Amazon     

Sotelo Montes  Carmen  Vidaurre  Héctor  Weber  John 《New Forests》2003,26(1):1-16

Calycophyllum spruceanum Benth. is an important tree for timber, charcoal and firewood in the Peruvian Amazon. The first provenance trial was established on farms in three zones located in one watershed in the Peruvian Amazon. The three zones differ in soil fertility and rainfall. Seven provenances from the Peruvian Amazon were tested in all three zones. Variation in four stem-growth traits (height, diameter, number of nodes and branches) and two branch-wood traits (basic density, heat content) was analyzed 18 months after establishment. There were significant differences in stem height and number of stem nodes among provenances in the analysis across zones. Provenance-related variation in stem-growth traits was most significant in the zone with the most fertile soils and highest rainfall. Branch-wood traits did not vary significantly among provenances in the analysis across zones or within zones. Branch-wood heat content was correlated with latitude, increasing from north to south, but this was only observed in a zone with low soil fertility and intermediate rainfall. Branch-wood density was correlated positively with stem diameter in the driest zone, but negatively with stem nodes in the intermediate zone and with stem height in the wettest zone. Results illustrate the potential for selection of fast-growing provenances, and the importance of replicating trials on different test environments to detect variation among provenances.  相似文献   

INTRASPECIFIC GEOGRAPHIC VARIATION AND PRIMARY SELECTION ON THE BEST PROVENANCE OF PINUS SYLVESTRIS VAR. MONGOLICA     

王迎丽 《林业研究》1994,(3)

INTRODUCTIoNPinussylveslrisvar.mongolic(lLitv.isoneofthemostimportantcommercialco-nifertrees,withsofttimber,straightgrainandhighercraftvalue,iswidelywidelyusedandpaidattentiontoinalltradesandprofessions.TheintroductionareaofthissPecieshasreachednortheast,northwestandnorthChinaandhasbecamemainspeciesforcheckingwindandcontrollingsand,turningthepfoursidesygreen,andornamentingforcourtyard.ThegeographicdistributionofPinussylvestrlkvar.mongolicais:thepurestandfromQiqian,Mangui,Huzhoug,Xinlint…  相似文献   

杉木地理种源间杂交试验   总被引：2，自引：0，他引：2  

李晓储  许德钰 《江苏林业科技》1991,18(1):1-6,10

进行杉木不同种源杂交表明,杂交亲本间地理位置(经、纬度)相差愈大,杂种优势愈明显。江苏×德昌杉、江苏×广西融水、江苏×广西玉林、江苏×贵州锦屏、江苏×湖南靖排的杂种后代,造林8～9年生时,蓄积比亲本(♀)高16.8～276.3％,比对照(优良林分子代或较好优树自由授粉子代)高14.9～257.2％,据此,认为在种源种子园中进行杂交,可进一步提高种源选择的增益。  相似文献