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红乳葡萄与美人指葡萄品种对比试验 总被引：1，自引：0，他引：1
连续4a对两个品种进行对比观察,发现其叶片、枝条萌芽率、成枝力、枝条成熟度、果粒、果穗、果实着色、果实耐贮性、抗病性等方面两个品种有明显差异。红乳葡萄具有的枝条成熟度高、成枝力强、果粒贮藏不脱落、叶背绒毛较多等优良性状致使其丰产性、抗病性、耐贮性明显好于美人指葡萄。 相似文献
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在白城市引进4个山葡萄品种进行栽培试验,对物候期、生长势、结果习性、果实品质、产量和抗病性进行观察研究。结果表明,山葡萄各品种在白城市生长发育正常,能够安全越冬,病害轻,适应性强。各山葡萄品种的平均含糖量为20.1%,是左家所产相同品种平均值的142.7%,超过目前国内任一地区相同性状的指标值;各品种平均含酸量为0.71%,只有左家所产相同品种平均值的29.6%,低于目前国内任一地区相同性状的指标值,适合酿造高档山葡萄酒。双优、左山一和双丰丰产性好,适合在白城市大面积发展。 相似文献
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新疆葡萄产业化发展现状及对策建议 总被引：8，自引：0，他引：8
<正>1新疆葡萄生产发展状况1.1主要品种与种植规模新疆葡萄栽培历史悠久,有多达600多个品种,种质资源丰富多样。大部分葡萄属欧亚种,穗大粒大,外形美观、含糖量高、丰产、耐贮性较强。目前,在疆内形成一定栽培面积的品种有近20个,有京早晶、牛奶、晚红(红地 相似文献
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奥迪亚无核葡萄品质、丰产性、抗病性等方面表现良好,是一个优良的早熟、无核葡萄品种,适宜在朝阳地区进行设施栽培。 相似文献
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在综述敦煌葡萄栽培历史和现状的同时 ,对该市引种以红地球为主的美国优质品种的适生性、市场前景、经济效益进行了分析。结果表明 :充分发挥敦煌地区的光、热等自然资源优势 ,发展红地球等优质葡萄品种切实可行 ,可取得良好的经济效益。 相似文献
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葡萄抗根结线虫资源筛选 总被引：1，自引：0，他引：1
对供试的38份葡萄资源，包括我国原产的10份葡萄野生种类、生产上常用的4份葡萄栽培品种、20份葡萄砧木品种和4份山欧杂种的对南方根结线虫的抗性鉴定，建立了完善的葡萄抗性鉴定评价体系。鉴定结果为：葡萄种质资源间抗根结线虫的能力有很大差异，抗性的分布有5种类型，即免疫、高抗、中抗、中感和高感类型。（1）原产我国的野生资源抗线虫性：原产我国的葡萄野生资源，没有发现免疫类型，从供试的10个种对根结线虫的抗性划分为4个类型，第一类为高抗资源（HR），分别为华东葡萄和毛葡萄；第二类为中抗资源（MH），分别为复叶葡萄、刺葡萄、蘡薁和华北葡萄；第三类为中感（MS）资源，分别为燕山葡萄、山葡萄和葛藟；第四类为高感（HS）资源，小果野葡萄。（2）栽培品种的抗线虫性：从供试的4个主要栽培的品种来看，目前我国葡萄产区主栽品种均不抗葡萄根结线虫。但存在抗根结线虫的阶段性差异，欧美杂种的抗线虫性强于欧亚种的栽培品种。（3）葡萄砧木品种的抗线虫性：第一类，砧木品种表现为免疫或极抗。有4个：3309P、Champini、Dog Ridge、Riparia 580。第二类，表现为高抗。有Grand Glaber、5BB、5C、Barrett50、Pulliat、Freedom、抗砧3号。第三类，表现为中等抗性。有贝达、SO4。第四类，表现为中等感染。有Salt Creek、Gloire、Eldorado、Rupestris 2、华佳8号。第五类，表现为感染。有Eldorado 、Macadams 、1613C。（4）山欧杂种的抗线虫性：4份山欧杂种均不抗葡萄根结线虫，但山欧杂种的抗线虫能力存在差异，抗性能力的高低与欧亚种的对后代遗传力有密切关系。 相似文献
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Pengfei Wang Xiaopeng Mu Junjie Du Yu Gary Gao Donghai Bai Luting Jia Jiancheng Zhang Haiyan Ren Xiaofang Xue 《林业研究》2018,29(1):55-63
The Chinese dwarf cherry (Cerasus humilis (Bge.) Sok.) is a small shrub with edible fruits. It is native to northern and western China. This species was included as a medicinal plant in the “Chinese Pharmacopeia” and has emerged as an economically important crop for fresh fruit consumption, processing into juice and wine and nutraceutical products as well. To gain a better understanding of flavonoid biosynthesis and help develop value added products and better cultivars with greater health benefits, we analyzed total flavonoid content (TFC), composition, and radical scavenging activities in fruit extracts of 16 Chinese dwarf cherry genotypes. Fruit peel TFC ranged from 33.5 to 72.8 mg/g RE·FW (RE: rutin equivalent, FW: fresh weight) while fruit flesh TFC ranged from 4.3 to 16.9 mg/g RE·FW. An HPLC analysis revealed that fruit extracts contained 14 flavonoids with considerable variation in their profiles across genotypes. The most abundant flavonoids in most genotypes were proanthocyanidin B1 (PA-B1), proanthocyanidin B2 (PA-B2), phloretin 2′-O-glucoside (PG), and phloretin 2′,4′-O-diglucoside (PDG). Principal component analysis showed that PG, PA-B1, and PA-B2 had large, positive factor loading values in the first principal component for each genotype. Increased scavenging activity of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals was apparent in genotypes ‘Nongda 4’, ‘Nongda 3’, ‘Nongda 6’, ‘Wenfenli’, and ’10-32’, suggesting promising applications in the production of nutraceutical products. In summary, our results will aid in breeding, fruit processing, and developing medicinal uses of the Chinese dwarf cherry. 相似文献
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丽水山地油茶幼林施肥技术研究 总被引：1，自引：0，他引：1
为了保障油茶Camellia oleifera高产,稳产,提高肥料利用率,分别于2015年和2016年在丽水市缙云县栗坑村鹿坪农场‘长林40号’油茶良种林进行了为期两年的田间试验,比较了3种不同施肥方式(生物有机肥2.5kg·株-1,三元素复合肥0.5kg·株-1,不施肥作为对照)和采用不同时期肥料用量配比试验,对油茶春梢量、落果数和成熟果数的影响。结果表明,在增加施肥的情况下,春梢的抽发量、结果数、总采果数、优质果的数量都明显高于对照组。春梢抽发量二次施肥最好;落果数与施肥次数呈反比;6月施用保果肥对果实的增大有明显效果,同时减少了落果,提高了产量;油茶籽产量三次施肥处理最优;各处理间油茶籽产量呈极显著差异,差异为:三次施肥>二次施肥>一次施肥>对照。三次施肥是本研究区域最佳的施肥模式,这对于实现油茶的高产稳产,肥料的节约利用具有重要意义。 相似文献
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为了加快乌梅产业发展,提升乌梅品质,通过对全国乌梅情况进行了解,以四川省达川区为选育点,通过观察、对比等方法从500株单株中筛选出2株优株,分别在3个试验点139hm2区域进行试验研究。4a试验结果表明:选育出的"达梅-1号"鲜果平均单果质量23.20g,可食率为85%左右,平均单位冠幅面积鲜果产量3.31kg/m2,在同类型中花期相对较早,果实均匀,适应性较广;"达梅-2号"鲜果平均单果质量25.70g,可食率在86%左右,平均单位冠幅面积鲜果产量3.33kg/m2,花期最早,果实成熟期早,果实大,果面颜色美观、清洁,适应性强。区域试验证明,乌梅适宜沙质土壤,pH值5.9~6.3,喜温暖湿润气候,"达梅-1号"2月13日进入初花期,7d后进入展叶期,2月26日进入幼果期,果实6月8日开始成熟;"达梅-2号"初花期、展叶期和幼果期时间较"达梅-1号"早16~20d,挂果时间长,一般在6月下旬成熟。初步认为,二者均可在全区范围内进行推广。 相似文献
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Daouda Sidibé Haby Sanou Jules Bayala Zewge Teklehaimanot 《Agroforestry Systems》2017,91(6):1031-1042
Methods for introduction of an improved cultivar of Ber tree (Ziziphus mauritiana Lam.) also called Jujube and its management on farms through intercropping with African eggplant (Solanum aethiopicum L.) and sorghum [Sorghum bicolor (L.) Moench] were tested in Sanankoroba, Mali. An experimental plantation was established on-farm with seedlings of the local variety of Ber half of which were grafted in situ with an improved cultivar of Ber called Seb. Crop production, Ber growth and fruit production were assessed over two cropping seasons. Both the improved and local varieties of Ber had no detrimental effect on either eggplant or sorghum, both in terms of yield and nutritional quality. In fact a beneficial effect of trees was found on the performance of both crops (yield and dry matter production) which suggests complementarities in resource use. The high level of fruit production by the improved variety of Ber observed on farms under rain-fed conditions may be a source of additional income and diversification of diet for rural communities in West Africa. Therefore, farmers’ adoption of growing improved Ber varieties in association with food crops may help considerably in improving food security and alleviating poverty in the region. 相似文献
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5个草莓品种果实品质的比较研究 总被引：2，自引：0，他引：2
通过对5个草莓品种的果实外观品质和营养成分的比较研究,结果表明,红颊草莓果实大而美观,香味浓,口感好,品质佳;在经济性状上优于其他4个品种,硬度适中,耐贮运性好,是当前温室草莓栽培中较为理想的优质大果型品种。童子一号和玫瑰草莓果实营养成分上无显著差异,但在耐储运性上,童子一号果实硬度较低,不利于远距离运输,而玫瑰果实硬度达到了4.00Pa/cm2,耐贮运性好,在实际栽培过程中应结合实际情况加以选用。丰香草莓果实光泽强,香气浓,酸甜适中,平均单果重为20.29g,可溶性固形物、蛋白质、糖、酸和VC含量上在5个品种中处于中间位置,但其果实硬度最低,只有2.53Pa/cm2,耐储运性最差,适宜在当地自产自销。 相似文献
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G. Von Braun 《Forest Pathology》1978,8(2):83-96
Causes and criteria of resistance to air pollution in Norway spruce, Picea abies (L.) Karst. IV. Recovery of injured needles, connections between forms of resistance and summary of results to date. Water potential measurement of resistant clones of Norway spruce treated with SO2 showed that they recovered better than control clones or were at least not so permanently affected. From a variety of experiments on fumigation, it was concluded that reflexive and “internal” resistance were associated. The results of the series of papers so far are summarised. 相似文献