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邱华 《柑桔与亚热带果树信息》2008,(7):55-55
云和雪梨栽培历史已超过550年。云和雪梨属砂梨系统的一个地方优良品种,资源丰富。20世纪90年代末,云和县的梨栽培面积曾达到667hm^2。为了保护和开发地方梨良种,从1988年起我们开展云和雪梨单株优选工作,经过6年的筛选,选出了一个丰产、品质优良的云和雪梨优良品种。该品种具有较强适应性和抗逆性, 相似文献
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浙江省云和县3300多公顷梨李基地工程建设全面拉开帷幕去冬今春已开发云和雪梨 149公顷黑李80公顷 近年来云和县进行以优质高效林业基地为重点的林业综合开发建立了533公顷云和雪梨和仙宫黑李试验示范基地当黑李种植在云和试验成功果品热销上海温州市云和雪梨获全国省精品水果展示会一等奖之后该县认识到规模开发的时机已经成熟在新世纪第一个 10年把一梨一李作为农村经济新的支柱产业来培育规划5年到10年内以交通方便立地条件好的云和盆地为中心以低山缓坡和山垄田为重点集中连片开发优质优价的云和雪梨和 仙宫黑李3330多公顷 为此他… 相似文献
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雷魏芳 《柑桔与亚热带果树信息》2004,20(4):36-37
“云和雪梨”历史悠久，久负盛名。早在《浙江通志》中记载了云和雪梨产量占全省产量之首；浙江农业大学1957年出版的教科书，把云和雪梨分为砂梨类，品质上乘，果大皮薄，心小肉厚，质细嫩、多汁，味甜可口。1988年，云和县委、县政府作出把云和雪梨培植成新的生态主导产业的决策，建立了云 相似文献
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云和雪梨有机生产技术探讨 总被引：1，自引：0，他引：1
浙江省云和县产梨素负盛名，有500多年的栽培历史。所产的梨统称“云和雪梨”，已成为具有较高知名度的品牌，现已发展成为浙江省绿色农产品、国家无公害农产品，生产基地已通过国家有机生产转换认证。现正着力解决云和雪梨有机生产面临的诸多问题，如：病虫害防治没有化学农药高效、及时，有待于加大生物农药的研究开发力度；缺乏一整套可操作性强的栽培管理技术；南方早熟梨市场价格大幅下跌影响了梨农的生产积极性及云和雪梨有机生产的进程等。 相似文献
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柳晓燕 《柑桔与亚热带果树信息》2010,(9):21-22
云和雪梨是浙江省云和县传统的优势农产品之一。云和县通过出台政策、科技兴业、强化服务、＂二次分配＂等措施,经过20多年的探索与发展,云和雪梨产业发展取得了基地规模化、经营产业化、产品品牌化、经济高效化的显著成效。 相似文献
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《果树学报》2016,(6)
【目的】明确浙江云和梨地方品种的遗传背景,为优良品种选育提供科学依据。【方法】基于低拷贝核基因LFY2int2的DNA序列和SSR对16份云和梨种质进行了分子鉴定。【结果】供试样本中共有4种LFY2int2拷贝(a,b1,b2和c),除了‘真香梨1’(c/b2)和‘云和红梨’(b1/b2)外,其余样本均为a/b1。基于LFY2int2的系统发育树表明‘真香梨1’与所有中国砂梨(Pyrus pyrifolia)样本分开独立成支;12对SSR引物在供试样本中分别扩增出了2~6个等位基因,UPGMA聚类结果显示‘真香梨1’和‘云和红梨’分别以0.45和0.70的相似系数与其他云和梨样本分开,而其余样本可分为2组,其中‘老雪梨4’和‘薄皮雪梨2’一致,‘老雪梨3’和‘老雪梨10’一致。【结论】基于LFY2int2和SSR的分析结果表明‘真香梨1’与中国砂梨亲缘关系远,它可能是砂梨和西洋梨(P.communis)的杂交后代;‘云和红梨’与典型云和雪梨起源不同;此外鉴定出了2组可能为同物异名的种质。 相似文献
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The effects of combinations of salinity (no salt, 2000 p.p.m. or 4000 p.p.m. of CaCl2 and NaCl, 1:1) and water table (30 cm, 60 cm or 90 cm from the soil surface), on the vegetative growth and tolerance of ‘Golden Japanese’ plum and ‘Mit Ghamre’ and ‘Balady’ peaches were studied. The plants were grown in lysimeters. The growth of the trunk, total shoot length, the increase in shoot length per cm and the fresh weight of top, root and total plant were reduced with increasing salinity of the irrigation water. The effect was accentuated when the plants were maintained at high water table level. The salinity treatments resulted in the death of 43%, 73% and 76% of the plants in the plum, and the ‘Mit Ghamre’ and ‘Balady’ peaches, respectively, indicating that the plum is more tolerant to salinity than the peach. The plants of the salinity treatments showed various symptoms of salt injury, such as leaf burn, defoliation, shoot die-back and finally death. In the peaches, salt injury started to occur in the first growing-season, whereas the salt injury appeared in the plum in the second growing-season. The symptoms were more pronounced in the 4000 p.p.m. treatment than in the 2000 p.p.m. treatment and were more pronounced at the high water table level. The salinity level was the predominant factor and the effect of the water table on the vegetative growth diminished with increase in the salinity level of the irrigation water. 相似文献
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AIM：To establish a fast, accurate and economical technique for culturing mouse pulmonary arteriolar smooth muscle cells (PASMCs), and to explore the effects of hypoxia on the proliferation and apoptosis of the PASMCs. METHODS：In sterile condition, the pulmonary artery was isolated from the male BALB/c mice by digesting with collagenase I, and the cells were cultured in fetal bovine serum-coated flask. Centrifugal procedure was not used during the cell passage. The cell morphology was observed under an inverted phase-contrast microscope. α-Smooth muscle actin was identified by immunocytochemistry and immunofluorescence. The effects of hypoxia on the proliferation and apoptosis of the PASMCs were detected by CCK-8 assay and TUNEL assay. RESULTS：PASMCs were identified by the methods of immunocytochemistry, immunofluorescence staining and observation of morphology. Unlike the rat PASMCs with typical subcultured peak-vally pattern, the mouse PASMCs showed a lot different without a peak-vally pattern. The cells could be subcultured after 5 d to 7 d and there was 3 to 5 generations depending on the activity of the cells. CCK-8 assay demonstrated that the A values of PASMCs exposed to hypoxia increased after 24 h (P＜0.05) as compared with normoxia. TUNEL result showed that the apoptotic index of the PASMCs in hypoxia decreased after 24 h (P<0.05). CONCLUSION：This technique for obtaining cultured mouse PASMCs is simple, fast, accurate and economical. The digestion time is easy to control. Hypoxia promotes the proliferation and inhibits the apoptosis of PASMCs. 相似文献
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小檗碱和壳聚糖抗蔬菜病原真菌活性测定及复合膜制备 总被引：2，自引：0，他引：2
研究了小檗碱和壳聚糖对几种常见蔬菜病原真菌的抑制活性,以及以小檗碱和壳聚糖为主料制备复合膜的方法,并测定了该膜的药物释放效果。试验表明:低浓度(0.234 mg/mL)小檗碱即可抑制辣椒炭疽病菌(Vermicularia capsici)等5种蔬菜病原真菌的生长。20 mg/mL浓度壳聚糖对番茄灰霉病菌(Botrytis cinerea)的抑制率高达65%,而对其余4种果蔬病原真菌也有一定的抑制作用。为了集成这2种天然化合物的优点,制备了小檗碱-壳聚糖复合膜,该膜具有缓释功能,在模拟外部环境(磷酸缓冲液,pH 6.8)条件下,20 d小檗碱累计释放率接近25%,提示其在果蔬贮藏抗菌中的应用价值。 相似文献
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钾肥在小白菜和萝卜上的施用效果 总被引：6，自引：0，他引：6
采用盆栽试验方法研究了施用钾肥对小白菜、萝卜生长发育、产量、品质及钾素含量的影响。结果表明 ,施用钾肥对小白菜和水萝卜的株高、叶片数无显著的影响 ,但可提高水萝卜块根的产量 ,提高幅度为 31.0 4 %～ 97.93%。施用钾肥可提高小白菜和萝卜的蛋白质和VC含量 ,降低硝酸盐含量 ,增加植株的钾素含量 相似文献
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Fresh onion seeds desiccated to 6.0% seed moisture content (SMC) were stored in various packaging materials under different storage conditions. Seeds packed in aluminum-laminated pouches beside those stored with silica gel at 25 °C maintained satisfactory germinability and vigour after 12 months. Desiccated seeds stored in moisture impervious containers produced more vigourous seedlings. Germination potential of onion seeds increased with reduced SMC besides storage in moisture impervious packets along with desiccants as physiological and biochemical attributes are regulated. Seed viability and vigour decreased with accelerated ageing due to increased lipid peroxidation, decreased activities of several free radical and peroxide scavenging enzymes. Electrical conductance of seed leachates also increased with ageing. Thus, adoption of appropriate storage temperature and moisture control techniques would significantly affect onion seed quality, which was due to minimum accumulation of free peroxide radicals and enhanced activity of free radical scavenging enzymes. 相似文献