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正2018年4月12—14日,由全国无籽西瓜科研与生产协作组、国家西甜瓜产业技术体系遗传改良研究室、中国农业科学院郑州果树研究所、中国园艺学会西甜瓜专业委员会、安徽省园艺学会、安徽省蔬菜产业技术体系、安徽省农业科学院园艺研究所、宿州市农业委员会主办,国家西甜瓜产业技术体系合肥综合试验站、安徽省瓜菜集约化育苗技术创新战略联盟、宿州市农业 相似文献
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渭南黄河滩区无籽西瓜小拱棚高效栽培技术 总被引:1,自引:0,他引:1
《中国瓜菜》2016,(12):58-59
陕西省渭南市黄河滩区以沙壤地为主,气候适宜,具有栽培西瓜得天独厚的条件,当地瓜农有着传统的、栽培技术水平较高的无籽西瓜种植经验。从栽培方式、整地施肥、田间管理、授粉技术、留果技术、采收等方面对无籽西瓜小拱棚栽培技术进行了总结,并对瓜农近年来种植无籽西瓜出现的新问题提出几点建议,以期为渭南黄河滩区无籽西瓜产业健康发展提供技术支持。 相似文献
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我国无籽西瓜产业发展状况与对策 总被引:8,自引:0,他引:8
对全国无籽西瓜科研与生产协作组调研与多年的实地考察,全面论述了我国无籽西瓜产业发展现状、产业布局特点及科研取得的成就,着重剖析了我国无籽西瓜产业在发展中的成绩和问题,并对我国未来无籽西瓜产业的发展和科研生产协作提出了具体建议。 相似文献
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<正>近几年来,我市无籽西瓜栽培面积逐年扩大。但由于无籽西瓜种子受遗传特性的影响,种子发芽率和成苗率较低,影响了无籽西瓜的大面积推广。采取有效措施,提高无籽西瓜种子的发芽率,是无籽西瓜生产栽培中所要解决的重要问题。 相似文献
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桃不同果实类型品质、产量性状的差异研究 总被引:1,自引:0,他引:1
通过普通桃、蟠桃、油桃、油蟠桃4种果实类型496份品种资源(Prunus persica L.)的主要品质、产量性状的比较分析,目的在于揭示不同果实类型群体的农艺性状特性。结果表明:①不同果实类型桃的生育期不存在显著差异。②普通桃与蟠桃、油桃与油蟠桃的比较,果形扁平果实的可溶性固形物、可溶性糖、糖酸比增加;可滴定酸、带皮硬度、去皮硬度、平均单果质量、平均果核质量、核质量/单果质量、产量指数减少趋势。③普通桃与油桃、蟠桃与油蟠桃的比较,果皮无毛果实的可溶性固形物含量、可滴定酸、着色面积、去皮硬度增加;可溶性糖、果皮韧性、平均单果质量、产量指数减少趋势。④油桃与蟠桃比较,油桃的可滴定酸含量、着色面积、平均单果质量和产量指数高于蟠桃。⑤普通桃与油蟠桃比较,油蟠桃可溶性固形物、可溶性糖含量均有显著增加,平均单果质量显著减少。 相似文献
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油桃、蟠桃是世界桃育种的重要方向。综述了油桃和蟠桃基因对生长发育的影响。桃果实无毛(油桃)和扁平(蟠桃)基因起源于我国的西北,是质量性状,有毛/无毛、扁平/圆为显性。油桃、蟠桃基因具有广泛的遗传多效性,油桃具有使果实的可溶性固形物、可滴定酸、着色面积、去皮硬度和亚表皮细胞的淀粉粒增加的作用;使可溶性糖、果皮韧性、平均单果质量减少趋势;桃杂合体基因型Gg比纯合体基因型gg的茸毛短。蟠桃具有使果实的可溶性固形物、可溶性糖、糖酸比和亚表皮细胞的淀粉粒增加;使带皮硬度、去皮硬度、平均单果质量、平均果核质量、核质量/单果质量、产量指数减少趋势;油桃和蟠桃基因的这种多效性在油蟠桃中有累加作用。探讨了油桃和蟠桃遗传多效性对生态和对育种的利用价值,提出利用油桃和蟠桃改善果实品质,利用隐性无毛基因(g)增加有毛桃的着色程度、降低茸毛长度,培育短毛品种,培育小果形油蟠桃品种,适当提高我国鲜食品种可滴定酸。 相似文献
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不同贮藏温度对双孢蘑菇采后品质的影响 总被引:1,自引:0,他引:1
研究不同贮藏温度对双孢蘑菇采后品质的影响。结果表明,低温贮藏环境可以抑制双孢蘑菇的水分丢失、感官品质下降、可溶性固形物含量降低和褐变等现象的发生。当相对湿度为95%时,双孢蘑菇较适宜的贮藏温度为0~5℃。 相似文献
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AIM:To probe into the role of 1, 4, 5 - trisphosphate inositol (IP3) and bcl-2 gene expression in inhibiting hepatocellular carcinoma of nude mice by genistein. METHODS:Animals with hepatocellular carcinoma were treated with genistein 1 mg·kg-1·d-1 (ip) for 3 weeks. The volume and weight of tumaor were measured. IP3, bcl-2 mRNA, Bcl-2 protein were assayed by IP3-[3H] Birtrak assay, RT-PCR, Western blotting, respectively. RESULTS:The tumor volume and weight of animals treated with genistein were lower than those in control (42.7mm3±27.8mm3 vs 52.3mm3±26.5mm3, 42.7mg±27.8 mg vs 91.3mg±31.4 mg). IP3 content was lower than that in control [(13.4±1.4)nmol/g protein vs (35.3±6.6)nmol/g protein]. bcl-2 mRNA expression was lower in group treated with genistein than that in control (RI which was the gray degree multiply area of bcl-2 / the gray degree multiply area of β-actin 0.48±0.02 vs 0.56±0.15). Bcl-2 protein expression was lower in group treated with genistein than that in control (RI 1.69±0.52 vs 1.37±0.48). CONCLUSION:Genistein inhibits growth of transplanted hepatocellular carcinoma in nude mouse liver by reducing IP3 production and down-regulating bcl-2 gene expression. 相似文献
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WANG Zuo LU Yun-cheng TANG Chao-ke YAO Feng WANG Zong-bao LIU Lu-shan YI Guang-hui YANG Yong-zong 《园艺学报》2005,21(3):514-518
AIM: Anti-atherosclerosis effects of Momordica charantia L was further studied in a New Zealand rabbit atherosclerotic model at the basis of anti-inflammation and antioxidant effects. METHODS: Animals were divided into 3 groups: normal group (normal rabbit diet), atherosclerosis group(diet containing 2% cholesterol), and Momordica charantia L group(diet containing 2% cholesterol and 1.5% sarcocarp of Momordica charantia L ). Ninety days later, all animals were sacrificed. The effect of Momordica charantia L on atherosclerosis was evaluated by measuring serum lipid and total cholesterol content of artery wall, observing fatty liver degree, aorta arteriosclerotic area, and the thickness of intima. RESULTS: The level of total serum cholesterol and LDL-C in Momordica charantia L treatment group were obviously lower than those in atherosclerosis group, so were the total cholesterol content of artery wall, fatty liver degree, atherosclerotic area, intima thickness and I/M ratio, but no significantly difference was found between the two groups in TG level. The level of HDL-C in Momordica charantia L treatment group was evidently lower than that in normal control group. CONCLUSION: Momordica charantia L has an anti-atherosclerosis action in rabbits. 相似文献
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无基质营养液育苗的营养液浓度对黄瓜幼苗生长的影响 总被引:2,自引:0,他引:2
采用无基质营养液培育黄瓜幼苗,研究不同营养液浓度对黄瓜幼苗生长的影响。结果表明:低浓度(0.5倍和1.0倍全价营养液)处理下,黄瓜幼苗低矮、细弱、生物量低、抗性弱、根体积小、壮苗指数低,这与低浓度营养供应不足进而减慢生长发育进程有关|高浓度(2.0倍)条件下,幼苗前期生长受到抑制,由于幼苗后期胁迫作用未消除,虽然生长有所加快,但幼苗健壮度较低|1.5倍营养液处理显著促进了幼苗的生长,有效地提高了幼苗的生物量、壮苗指数和根系活力,较好地协调了幼苗的生长速率和抗性,胁迫作用不明显,促进作用大于胁迫作用。因此,在黄瓜无基质营养液育苗条件下,1.5倍全价营养液为最适浓度。 相似文献