野生新疆桃抗酸碱盐性评价     

曲艳华  李冬梅  赵丽君  阿布都外力&#;木米尼  朱立新  贾克功 《中国农业大学学报》2014,19(3):115-120

为探明野生新疆桃抗酸碱盐种质资源价值,以360株野生新疆桃实生苗为试材,采用pH 3.5H3PO4溶液、pH 9.5KOH溶液和0.4%NaCl溶液灌根处理的方法,评价其对酸、碱和盐的抗性。结果表明:1)野生新疆桃为极强抗酸型树种,实生个体间抗性差异显著,分离为极强、强、中等3种抗酸型植株,分别占群体总数的86%、9%和5%。2)野生新疆桃为极强抗碱型树种,实生个体间抗性差异显著,分离为极强抗和强抗2种抗碱型植株,极强抗碱型和强抗碱型植株分别占群体总数的98%和2%。3)野生新疆桃为弱抗盐型树种,其实生个体间抗性分离广泛,存在极强、强、中等、弱、极弱全部5种抗盐型植株,分别占群体总数的8%、9%、19%、61%和3%。结果显示,野生新疆桃是优良的抗酸碱型砧木树种和抗酸碱盐型种质资源。  相似文献   

南天竹繁育管理技术   总被引：1，自引：0，他引：1  

吴亚维 《现代农业科技》2014,(7)

从形态特征、生长习性等方面介绍了南天竹的生物学特性,并总结了南天竹的繁育管理技术,包括播种育苗、无性繁殖育苗、病虫害防治,以期为南天竹的繁育管理提供参考。  相似文献   

鸡羽色性状基因座研究进展   总被引：1，自引：0，他引：1  

何艺平  许继国  谢袖娟  詹惠娜 《广东农业科学》2014,41(9):129-134

家鸡（Gallus gallus domestica）羽色受多基因调控,已经有越来越多羽色相关基因与突变被定位,包括扩 展位点基因座、深褐色基因座、花斑基因座、横斑表型相关基因、真黑素稀释基因座等。就羽色形成的机理,对羽色基 因座位对应的表型情况和基因座位对应的编码基因以及致因突变进行了综述。此外,还简要介绍了如何通过分子方 法剔除对优质鸡育种不利的羽色基因座。  相似文献   

蒙古扁桃种子萌发和幼苗生长对渗透胁迫的响应     

王进  张勇  赵刚  闫芳  张成国  雷蕾  马银山 《上海交通大学学报(农业科学版)》2014,(1):191-195

以天然生长于祁连山自然保护区隆畅河自然保护站的濒危植物蒙古扁桃(Prunus mongolica)去内果皮的种子为材料,以不同渗透势PEG-6000溶液模拟干旱条件,研究了种子萌发和幼苗生长对干旱胁迫的响应特征。结果表明,随着干旱胁迫程度的加剧,蒙古扁桃种子吸胀速率、萌发率、萌发指数、活力指数、苗高和根长、组织饱和含水量等指标均表现出明显降低的趋势,而幼苗初生芽干重、根干重和根冠比均呈先升后降的趋势。蒙古扁桃种子对水势变化既敏感又抗旱,种子能够萌发的最低渗透势阈值为-0.65 MPa。干旱胁迫未能萌发的种子复水后萌发率较高。分析认为,蒙古扁桃种子萌发和幼苗生长对干旱胁迫的响应特征对种的延续具有重要意义,但在人工栽培时保证 土壤墒情应是保障建植成功的关键措施。  相似文献   

In vitro propagation of GF677 hybrid rootstock (Prunus persica × Prunus amygdalus) from mature cotyledons     

M. R. Arab 《The Journal of Horticultural Science and Biotechnology》2016,91(3):236-242

Adventitious shoot regeneration from mature cotyledons of GF677 rootstock (Prunus persica × Prunus amygdalus) was achieved in vitro. Thidiazuron (N-phenyl-N-1,2,3-thidiazol-5-yl-urea; TDZ) at 32 µM gave the highest percentage of cotyledons forming adventitious shoots (68.8%) and the highest number of shoots per cotyledon (4.8) on Quoirin and Lepoivre (QL) medium. On QL medium containing 32 µM TDZ, exposure of the proximal segments of cotyledons to darkness at the start of culture increased the percentage of cotyledons forming adventitious shoots (62.5%) when compared with those kept under light conditions (15%). A combination of 0.72 µM gibberellic acid and dark treatment resulted in at least 2.7-fold more elongated shoots than non-treated shoots. The highest rooting percentage (100%) occurred on 0.5× Murashige and Skoog medium supplemented with Gamborg (B5) vitamins and 2 mg l^?1 indole-3-butyric acid. Rooted plantlets were acclimatised under greenhouse conditions with a 70% survival rate.  相似文献   

Effects of Plant and Soil Factors on Growth of Young Apple and Blackcurrant Plants     

Ivar Dencker  Poul Hansen 《Acta Agriculturae Scandinavica, Section B - Plant Soil Science》2013,63(1):73-77

Abstract

Shoot growth as affected by plant size at planting, peat application in the planting hole, pruning, drip-irrigation and, for apple, specific apple replant disease (SARD) was investigated in apple (cv. Elstar) and blackcurrant (cvs Ben Lomond and Ben Nevis), using a multifactorial design. In the first year after planting, peat application and drip-irrigation enhanced shoot growth in both species, with a further interactional increase when both treatments were applied. The extension growth of apple, in contrast to blackcurrant, was positively related to plant size, and the strength of the relationship was distinctly improved when growth conditions were good. Pruning had only small effects on total shoot growth, with a trend towards an increase when growth conditions were poor.  相似文献   

Toward sustainable harvesting of Africa's largest medicinal plant export (Prunus africana): a case study in Tanzania     

《Southern Forests》2013,75(4):303-309

Global demand for treating prostate disorders with Prunus africana bark extract has made P. africana Africa's largest medicinal plant export. Unsustainable harvesting practices can lead to local extirpations of this multipurpose tree. Survey research targeting P. africana harvesters in a Tanzania forest reserve revealed that 78% of them used unsustainable harvesting practices. This research focused on establishing a socioeconomic profile of the harvesters, the profitability of their business operations, and identifying the factors that influence their selection of harvesting practices. Results indicate that harvesters have above-national-average education, double the average family size, and generate income exceeding government's minimum wages. Large family size and high earning potential imply increased future harvesting activity. Logistic regression results indicate that education and training level could predict the likelihood that a harvester would use unsustainable harvesting practices. Local- and district-level government organisations could implement a resource assessment as a basis to design and implement harvesting schedules and ensure that the harvesters receive appropriate training, regardless of their education level.  相似文献   

几种木本园艺植物塑料袋内密封扦插试验   总被引：3，自引：0，他引：3  

王永清  汤浩茹 《四川农业大学学报》1997,15(4):486-490

本文报道在食品保鲜袋内密封扦插桂花、樱花、甜樱桃和苹果的试验结果。当年生半木质化至完全木质化插条经生根促进剂处理后，密封扦插在食品保鲜袋内的湿润基质上，放置空旷处，夏秋高温季节晴天适度遮阴。结果表明，塑料袋内的温度较稳定，基质始终保持刚扦插时的湿润状态，插条叶片全部或部分保持饱满、挺立。插条一周左右即可产生愈伤组织，３─４周便可出根。尽管在几种材料上获得的生根率差异较大，但都成功地生了根。在以“峨嵋仙土”为扦插基质，６月份晴天１０：００─１７：００时遮阴的条件下，樱花的生根率达７０％以上。  相似文献   

美国加州李在楚雄地区的引种及丰产栽培技术     

代家泽 《西部林业科学》2001,(2):45-48

美国加州李是目前国内外流行的一种新型高档水果。1996年在云南楚雄市作引种试验，经5年的试验证实加州李在楚雄地区适应性强，具有结果早、丰产等特点，有较高的推广价值。本文从嫁接苗的培育、种植技术、管理措施、病虫害防治等方面，详细地介绍了美国加州李的丰产栽培技术，并对果实的采收和贮藏技术作了介绍。  相似文献   

Soluble sugars and carboxylic acids in ripe apricot fruit as parameters for distinguishing different cultivars     

Fabrizio Gurrieri  Jean-Marc Audergon  Guy Albagnac  Maryse Reich 《Euphytica》2001,117(3):183-189

Major sugar and carboxylic acid components in apricot flesh fruits were detected and quantified. Fifty-one genotypes including clones growing in France, Spain, Italy, Greece and USA, belonging to the INRA germ plasm collection has been evaluated. Principal component analysis (PCA) has been performed to study correlation among fruit quality measurements and to interpret relationships between genotypes as a tool for germ plasm characterization. A marked variation in malic and citric acid content has been observed and PCA revealed clusters of apricot genotypes for the malic/citric ratio content. A good correlation between sugar component and refractometer index (r = 0.83) has been detected. The wide range of diversity in malic and citric acid content in apricot germ plasm makes it possible to breed and select genotypes with improved flavour on the basis of superior phenotypes. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献