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Search Results: 1 - 10 of 44877 matches for " 吕天星 "
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苹果杂种实生苗叶片性状遗传趋势研究
,王铭,伊凯
北方园艺 , 2013,
Abstract: 以7个苹果品种及5个杂交组合的F1代种苗为试材,测定并评价了叶长、叶宽、叶厚、叶面积、叶形指数5个表观性状,研究了苹果杂种后代叶片性状的遗传规律。结果表明苹果叶片性状呈现明显的衰退趋势,叶片性状在杂交后代中存在广泛变异,叶片大小在个体间的差异变化最大,比较适合作为杂交后代叶片性状早期选择的指标。
岳 丰 苹 果 制 汁 性 能 研 究
王冬梅,,闫忠业,伊 凯,刘 志
北方园艺 , 2010, DOI: 10.11937/bfyy.201024062
Abstract:
不同措施促进苹果幼苗分枝的效果
,姜孝军,王颖达,刘志
北方园艺 , 2015, DOI: 10.11937/bfyy.201519010
Abstract: 以‘岳艳’苹果品种的平邑甜茶高接苗为试材,研究了普洛马林单独喷施、剪除幼叶法等处理促进苹果幼苗分枝的效果。结果表明单独施用普洛马林溶液能够显著地促进幼苗分枝,较为适宜的质量浓度是2000mg/L;剪除幼叶法无论是单独进行,还是与普洛马林溶液喷施共同使用,都能促进分枝的产生,并且二者组合使用的效果要好于单独使用;所有处理在促进幼苗产生分枝的同时对苗木高度和粗度均无显著影响;考虑减少操作环节、降低生产成本等因素,建议生产中采用剪除幼叶法的方式培育带分枝的‘岳艳’苹果的平邑甜茶高接苗。
中晚熟苹果新品种‘岳阳红’
刘志,王冬梅,张景娥,伊凯,杨锋,闫忠业,
园艺学报 , 2009,
Abstract: ‘岳阳红’苹果新品种是以‘富士’ב东光’杂交选育而成。果实近圆形,果形指数0.85,平均单果质量205g。果皮底色黄绿,全面着鲜红色。果肉淡黄色,肉质松脆、中粗,汁液多,风味甜酸爽口,微香,无异味。果实硬度10.1kg·cm-2,可溶性固形物含量15.2%,总糖含量12.52%,可滴定酸含量0.50%,维生素c含量0.0535mg·g-1。具有外观美,风味浓,品质优及早果性、丰产性强等特点。
晚熟苹果新品种‘岳苹’
刘志,王冬梅,张景娥,闫忠业,,杨锋,伊凯
园艺学报 , 2010,
Abstract: ‘岳苹’是以‘寒富’ב岳帅’杂交选育而成的晚熟苹果新品种。果实圆锥形,平均单果质量295g,大果545g。果实鲜红色,果面光洁。果肉黄白色,松脆、中粗,汁液多,风味酸甜、微香,硬度11.2kg·cm-2,可溶性固形物15.3%,可溶性糖12.49%,可滴定酸0.22%,维生素c0.052mg·g-1。s基因型为s1s2。果实发育期165d左右,营养生长期220d。丰产,稳产,耐贮藏,抗寒,抗苹果轮纹病。
加工鲜食兼用苹果新品种‘岳丰’
王冬梅,刘志,伊凯,杨锋,张景娥,闫忠业,
园艺学报 , 2010,
Abstract: ‘岳丰’是以‘东光’ב富士’选育出的晚熟、加工鲜食兼用苹果新品种。果实近圆形,平均单果质量230g,肉质松脆,汁多,微香,甜酸味浓,可溶性固形物含量15.6%,可滴定酸含量0.9%,维生素c含量0.1597mg·g-1,硬度11.3kg·cm-2。丰产,稳产,抗病性强,耐贮藏。加工出汁率90%,浓缩汁棕黄色,澄清透明,无异味,透光率96.5%,色值72.9%,浊度0.83ntu。
晚熟苹果新品种‘岳华’
王冬梅,刘志,伊凯,张景娥,闫忠业杨,
园艺学报 , 2013,
Abstract: ‘岳华’是以‘寒富’为母本,‘岳帅’为父本人工杂交选育而成的晚熟苹果新品种。果实长圆形,平均单果质量215g,最大325g。果实鲜红色,条红;果肉黄白色,肉质松脆,中粗,汁液多,风味酸甜,微香,品质上等。果肉硬度11.9kg·cm-2,可溶性固形物含量15.5%,可滴定酸含量0.37%。果实发育期160d,耐贮藏、抗寒性较强,较抗枝干轮纹病。
苦葛皂苷对福寿螺耗氧及排氨的影响
田悦,,杨苑钊,侯鑫鑫,陈华保,张敏,龚国淑,杨春平
- , 2017, DOI: 10.3785/j.issn.1008-9209.2016.10.241
Abstract: 为明确苦葛皂苷对福寿螺呼吸代谢的影响,测定了不同苦葛皂苷质量浓度、不同水体培养温度和不同螺质量下苦葛皂苷处理与未处理正常福寿螺(对照)耗氧率、排氨率及氧氮比的差异。结果表明:苦葛皂苷处理组福寿螺的耗氧率及排氨率均显著低于对照组(P<0.05);在水温28 ℃、苦葛皂苷质量浓度40 mg/L条件下,处理组福寿螺的耗氧率、排氨率分别为0.19、0.02 mg/(g·h),而对照组高达0.88、0.07 mg/(g·h);苦葛皂苷处理组福寿螺的氧氮比值显著降低,说明福寿螺代谢方式发生改变,由以蛋白质及脂肪和糖类共同代谢转向以蛋白质代谢为主。本研究结果揭示了苦葛皂苷的作用机制可能是通过降低福寿螺的呼吸代谢水平,抑制脂肪和糖类代谢能力,迫使福寿螺通过增加蛋白质代谢进行免疫应激,最终导致螺体能量供应不足而中毒死亡。 通讯作者: 杨春平(http://orcid.org/0000-0003-3433-7835) E-mail: chunping79@163.com
Abstract: Pomacea canaliculata is an introduced aquatic animal which has transformed into a malignant aquatic animal of paddy and other aquatic plants in China. In addition, the snail also acts as an intermediate host of Angiostrongylus cantonensis, and the main causative agent of human eosinophilic encephalitis. Moreover, the snail consumes dissolved oxygen in freshwater, causing destruction of the aquatic environment. As a result, P. canaliculata was listed as an invasive species in China by the Chinese State Environmental Protection Administration in 2003. It is necessary to prevent the species from spreading further and expanding its population. Pueraria peduncularis Grah. is a traditional Chinese medicine that belongs to the Pueraria family within the Leguminosae, and distributes widely across southwestern China. In terms of agricultural activity, the herb is biologically active against a variety of agricultural pests, and has insecticidal, bactericidal, and slug-killing activities. In our previous study, we found that P. peduncularis extracts had extremely strong toxicity against the apple snail and further identified the active compound as pedunsaponin, which has LC50 value of 3.89 mg/L and great molluscicidal potential. To explore the effects of pedunsaponin on the respiratory metabolism of P. canaliculata, the oxygen consumption rate, ammonia excretion rate, and the ratio of oxygen to nitrogen (O:N) were examined after treatment with pedunsaponin. The correlations of these processes with pedunsaponin concentrations, treatment temperatures and snail sizes were also evaluated in this study. The results showed that both the oxygen consumption rate and ammonia excretion rate decreased in the pedunsaponintreated groups compared with the untreated group (P<0.05). When the temperature was 28 ℃ under 40 mg/L pedunsaponin, the oxygen consumption and ammonia excretion rate were 0.19 mg/(g·h) and 0.02 mg/(g·h) in the treated snails, while for the normal snails, they were 0.88 mg/(g·h) and 0.07 mg/(g·h), respectively. In addition, pedunsaponin significantly reduced the O:N ratio of the snails, shifting away from protein,
“互联网 + 物流”的特征与模式分析
Analysis of the Characteristics and Modes of “Internet plus Logistics”
 [PDF]

, 江辉, 周兴建
Business and Globalization (BGlo) , 2016, DOI: 10.12677/BGlo.2016.41001
Abstract:
在“互联网+”环境下,传统物流业开始与互联网进行融合。本文通过对“互联网+”理念的梳理和“互联网 + 物流”概念的界定,探析了“互联网 + 物流”的物流资源整合、价值链重构和去中介化功能等三重内涵特征。进而分析了“互联网 + 物流”现有的三类典型模式:平台模式、众包模式和跨界模式,在此基础上传统物流逐步转型,形成新的物流业生态。
In the environment of “Internet plus”, the traditional logistics industry begins to integrate with the Internet. The paper firstly definites the concepts of the “Internet plus” and “Internet plus logistics”, and then analyzes the characteristics of “Internet plus logistics”, which involves logistics resources integration, reconstruction of the value chain and disintermediation function. Moreover, there are three typical models of “Internet plus logistics”: logistics platform, logistics crowd sourcing and logistics cross-border; then the traditional logistics transformated gradually to form a new logistics industry.
氯化钠对乙酰甲胺磷胁迫下花椰菜种子萌发及幼苗生长的影响

北方园艺 , 2013,
Abstract: 为探究盐和农药交叉胁迫对植物生长影响的机制,以花椰菜种子为试材,研究了0.0%和0.2%NaCl对0.00%、0.03%、0.06%、0.09%、0.12%不同浓度乙酰甲胺磷下花椰菜种子萌发率及其幼苗生长的影响。结果表明NaCl和乙酰甲胺磷的交叉胁迫对花椰菜种子萌发及其幼苗根长、苗高、侧根数目、鲜重和干重的增加均具有显著的抑制作用;花椰菜对0.03%乙酰甲胺磷处理敏感,但对0.2%NaCl处理却呈现出了抗性;盐胁迫加剧了农药对植物的胁迫效应;为花椰菜盐碱地区域开发利用及其抗农药、耐盐种质筛选提供参考。
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