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为选育具有特定营养保健功能的南瓜品种,测定了12个中国南瓜品种果实中营养成分含量(总糖、还原糖、淀粉、氨基酸、水分)及8种矿质元素成分含量,并进行变异性、相关性分析。结果表明,‘蜜丰’的还原糖和总糖、淀粉含量(ω)最高,分别为1.59、1.97、1.16 g·100 g~(-1);‘蜜本3号’的氨基酸含量最高,为0.69 g·100 g~(-1);‘改良蜜本’的水分含量最高,达到94.06%。各营养成分中氨基酸含量的变异系数最大为32.43%,水分变异系数最小为4.34%。总糖与还原糖含量呈极显著性正相关,相关系数为0.978,氨基酸与水分含量存在较显著的正相关,相关系数为0.576。南瓜果实矿质元素含量中钾的含量最高,平均为2 121.58μg·g~(-1),锰的含量最低,平均为1.69μg·g~(-1),其中锰的变异系数最大,为77.53%,最小的为铜,为11.38%。钙与钾存在显著的负相关,锰与锌存在显著的正相关,锰与钠存在极显著的正相关。 相似文献
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以9个印度南瓜品种为试材,测定其果实营养成分(氨基酸、总糖、还原糖、水分、灰分)和8种矿质元素(Ca、Cu、Fe、K、Mg、Mn、Na、Zn),并进行方差及相关分析。结果表明:氨基酸含量以"君川金栗"最高(20.90g·kg~(-1)FW);还原糖含量和总糖含量以"日本432"最高,分别为14.33、16.63g·kg~(-1)FW;水分含量为877.2~953.6g·kg~(-1)FW;灰分含量为1.45~13.92g·kg~(-1)FW。还原糖与灰分、总糖呈极显著正相关;灰分与总糖呈显著正相关;水分与总糖、还原糖、氨基酸呈极显著负相关。K含量最高,为2 021.33μg·g~(-1) FW;Mn含量最低,为1.81μg·g~(-1) FW;Fe与Mn、Mg,Na与Mg之间存在显著的正相关。 相似文献
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《中国园艺文摘》2016,(2)
为进一步比较不同品种南瓜β-胡萝卜素含量,试验采用高效液相色谱(HPLC)法测定‘百蜜1号’、‘百蜜2号’、‘百蜜3号’等8个南瓜品种果肉中β-胡萝卜素的含量,测定结果中‘百蜜1号’的含量为29.4 mg/kg鲜重,‘百蜜2号’的含量为32.6 mg/kg鲜重,‘百蜜3号’的含量为28.7 mg/kg鲜重,‘甜蜜1号’的含量为22.9 mg/kg鲜重,‘改良蜜本’的含量为42.2 mg/kg,‘优丰蜜本’的含量为23.9 mg/kg鲜重,‘兴蔬大果蜜本’的含量为31.0 mg/kg鲜重,‘蜜本3号’的含量为25.0 mg/kg鲜重。结果表明,品种间β-胡萝卜素的含量有明显差异。 相似文献
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《现代园艺》2020,(17)
以生长良好的37株‘长鸡心枣’实生后代单株为试材,调查其物候期及叶、枝、花、果等器官的相关性状指标,分析其后代群体性状变异分离情况。结果表明:实生后代中叶面积、叶柄长、叶柄面积、枣吊长度、果实形状、黄酮含量、淀粉含量、单果重变异幅度较大,叶长、叶型指数、花径、蜜盘直径、果实可溶性总糖和可溶性蛋白含量等性状变异幅度较小;全部后代单株叶片形状、叶尖形状及叶缘形状与母本性状表现相同;实生后代物候期变异程度较大的为完熟期、白熟期、末花期,变异程度较小的为初花期、盛花期及萌芽期。后代群体的叶面积与叶周长,果实横径与单果重、叶宽、叶型指数,叶长与叶宽、叶长与叶型指数等均呈极显著正相关;果实横径与叶长、叶型指数与叶宽、单果重与叶宽均呈显著或极显著负相关,并筛选出综合性状优良的2个实生后代单株。 相似文献
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南瓜新品种‘百蜜5号’是以自交系TYMB4C1为母本,自交系4872为父本培育而成的早熟小果型南瓜一代杂种。全生育期约150 d,植株生长势强,主侧蔓均可节瓜,第一雌花节位12～15节。连续坐瓜能力强,果实梨形兼具观赏性,瓜面有棱沟,瓜长约25 cm,横径12.2～13.8 cm,嫩瓜花皮、绿色,老熟瓜皮棕黄色,果肉金黄色,肉厚约3 cm,甜面度高,质地细腻无丝,老熟瓜和嫩瓜兼收型,平均单瓜质量1.68 kg,田间高抗白粉病、中抗病毒病、抗霜霉病,每667 m2产量约3 000 kg,适宜在河南省及黄淮流域地区种植。 相似文献
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为了筛选出适宜石家庄地区早春塑料大棚栽培的辣椒品种,对来自不同地区的14个辣椒品种的11个农艺性状进行了相关性分析、主成分分析和聚类分析。结果表明:单果质量与果形、商品果纵径呈极显著负相关,与商品果横径呈极显著正相关;单产与熟性呈极显著负相关;商品果纵径与商品果横径、商品果肉厚、辣味呈极显著负相关,与果形呈极显著正相关,与青熟果色呈显著负相关;商品果横径与商品果肉厚、辣味呈极显著正相关,与果形呈极显著负相关,与青熟果色呈显著正相关;商品果肉厚与果形呈极显著负相关,与辣味呈极显著正相关;果形与青熟果色呈显著负相关;熟性与光泽呈显著负相关。经主成分分析,前3个主成分的特征值均大于1,累计方差贡献率达84.865%,能综合辣椒农艺性状的的大部分信息。经聚类分析,在类间距离为10时,14个品种分为五大类。第Ⅰ类为灯笼形黄果,表皮光泽;第Ⅱ类为方灯笼形甜椒;第Ⅲ类为大果型辣椒,单果质量较大;第Ⅳ类为薄果肉的牛角椒,口感好,病毒病抗性强;第Ⅴ类为长果形的薄果肉长羊角椒。经相关性分析、主成分分析和聚类分析3项综合分析,确定‘峰冠’单果质量较大,但病毒病抗性较差,建议在石家庄地区早春种植;‘尊虎六号’‘改良大果虎皮椒’为薄果肉的牛角椒,口感好,病毒病抗性强,产量也较高,适宜在石家庄地区种植;其余品种产量较低、病毒病抗性较差及辣度较大(石家庄地区不喜欢太辣的品种),因此均不适宜在石家庄地区种植。 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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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
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以大荔县冬枣种植区采集的发病枣果为试材,采用常规组织分离法进行病原菌的分离纯化,通过柯赫氏证病法则、形态学观察及分子生物学分析,研究鉴定了冬枣黑斑病和炭疽病的病原菌种类,并采用田间调查法对2种病害为害特征进行比较分析,以期为田间有效区分冬枣黑斑病和炭疽病为害症状,并快速判断其病原类型,及进一步深入开展精准防控提供参考和指导.结果表明:陕西大荔冬枣黑斑病的病原菌为细极链格孢(Alternaria tenuissima),炭疽病的病原菌为胶孢炭疽菌(Colletotrichum gloeosporioides).2种病害均主要为害枣果实,在枣果果腰或果肩上形成黑褐色病斑,可能同时存在且症状相近极易混淆,但在病斑表面、皮下及久置表型3个方面存在明显区别. 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