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Effect of Soaking Temperature on Water Absorption Characteristics of Selected Ghanaian Cowpea Varieties 预览
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作者 Nancy Nelly Idun-Acquah Ahmad Addo Ato Bart-Plange 《应用科学(英文)》 2019年第9期736-748,共13页
The water absorption kinetics of three cowpea varieties (Asontem, Hewale and Asomdwee) was studied following the phenomenological models derived from Fick’s law of diffusion. Soaking of seeds from each cowpea variety... The water absorption kinetics of three cowpea varieties (Asontem, Hewale and Asomdwee) was studied following the phenomenological models derived from Fick’s law of diffusion. Soaking of seeds from each cowpea variety was carried out for 10 h at four temperatures (30&#176;C, 40&#176;C, 50&#176;C and 60&#176;C). The saturation moisture content was higher for Asontem (106.9 g water/1000 g dry weight) and Hewale varieties (108.7 g water/1000 g dry weight) and lower for Asomdwee hybrid (100.7 g water/1000 g dry weight), respectively. The proposed Fick’s law of diffusion satisfactorily described the kinetics of water absorption regardless of the variety and temperature. The estimated values for water diffusion coefficient for Asontem, Hewale and Asomdwee varied from 5.12 × 10-10 m2/s to 6.64 × 10-10 m2/s, 3.96 × 10-10 m2/s to 5.12 × 10-10 m2/s, 4.93 × 10-10 m2/s to 6.08 × 10-10 m2/s, respectively. The strong influence of temperature on the water diffusion coefficient was adequately described by an Arrhenius-type equation with activation energy values for Asontem, Hewale and Asomdwee as 7.27 kJ/mol, 7.26 kJ/mol and 6.26 kJ/mol, respectively. 展开更多
关键词 COWPEA Water Absorption DIFFUSION COEFFICIENT Arrhenius-Type Equation MODELLING
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Screening Cowpea (<i>Vigna unguiculata</i>(L.) Walp.) Genotypes for Enhanced N<sub>2</sub>Fixation and Water Use Efficiency under Field Conditions in Ghana 预览
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作者 Damba Yahaya Nicholas Denwar +1 位作者 Mustapha Mohammed Matthew W. Blair 《美国植物学期刊(英文)》 2019年第4期640-658,共19页
To explore the variations in symbiotic N2 fixation and water use efficiency in cowpea, this study evaluated 25 USDA cowpea genotypes subjected to drought under field conditions at two locations (Kpachi and Woribogu) i... To explore the variations in symbiotic N2 fixation and water use efficiency in cowpea, this study evaluated 25 USDA cowpea genotypes subjected to drought under field conditions at two locations (Kpachi and Woribogu) in the Northern region of Ghana. The 15N and 13C natural abundance techniques were respectively used to assess N2 fixation and water use efficiency. The test genotypes elicited high symbiotic dependence in association with indigenous rhizobia, deriving between 55% and 98% of their N requirements from symbiosis. Consequently, the amounts of N-fixed by the genotypes showed remarkable variations, with values ranging from 37 kg·N-fixed·ha-1 to 337 kg·N-fixed·ha-1. Most genotypes elicited contrasting symbiotic performance between locations, a finding that highlights the effect of complex host/soil microbiome compatibility on the efficiency of the cowpea-rhizobia symbiosis. The test genotypes showed marked variations in water use efficiency, with most of the genotypes recording higher δ13C values when planted at Kpachi. Despite the high symbiotic dependence, the grain yield of the test cowpeas was low due to the imposed drought, and ranged from 56 kg/ha to 556 kg/ha at Kpachi, and 143 kg/ha to 748 kg/ha at Woribogu. The fact that some genotypes could grow and produce grain yields of 627 - 748 kg/ha under drought imposition is an important trait that could be tapped for further improvement of cowpea. These findings highlight the importance of the cowpea-rhizobia symbiosis and enhanced water relations in the crop’s wider adaptation to adverse edaphoclimatic conditions. 展开更多
关键词 Drought COWPEA Carbon Isotope Discrimination Nitrogen FIXATION Grain Yield
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Evaluation of <i>Piper guineense</i>in the Control of Cowpea Storage Weevils: Implication for Sustainable Credit Advancement 预览
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作者 Gabriel Adedotun Sunday Benson Abiodun Oladipupo Joda +1 位作者 Olufemi Sunday Sosanya Babajimi Olumide Tokoya 《农业科学(英文)》 2019年第4期530-537,共8页
The Central Bank of Nigeria Anchored Borrowers Programme efforts geared towards massive production of cowpea and sustainable food security is challenged with post-harvest losses especially due to insect pest infestati... The Central Bank of Nigeria Anchored Borrowers Programme efforts geared towards massive production of cowpea and sustainable food security is challenged with post-harvest losses especially due to insect pest infestation in storage. So also, chemical method of pest control posed more health and ecological challenges than food insecurity. This work investigated the effect of Piper guineense on cowpea storage weevil at the agronomy laboratory of the Lagos State Polytechnic, Ikorodu. Contact toxicity of P. guineense at 0.2, 0.4, 0.6, 0.8 and 1 g per 20 g of cowpea seeds in test tubes including a control was observed. The treatment materials exhibited significant efficacy from 24 hours after infestation. P. guineense at 1 g concentration significantly reduced the oviposition potential, egg hatching rate, holes and emergence of adult Callosobruchus maculatus on treated seeds. The powders caused chronic toxicity and inhibit development. All the responses were found to be concentration dependent. Increasing rates of P. guineense increased performance. The implication of these results is discussed and recommendations proffered. 展开更多
关键词 Concentration COWPEA Efficacy STORAGE Weevil PIPER guineense
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Effects of Moisture Deficit on the Yield of Cowpea Genotypes in the Guinea Savannah of Northern Ghana 预览
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作者 Damba Yahaya Nicholas Denwar Matthew W. Blair 《农业科学(英文)》 2019年第4期577-595,共19页
Cowpea is multipurpose, leguminous, high protein crop in the tropics that provides food for humans and fodder for animals. The crop adds nitrogen and other nutrients to the soil through symbiotic relationship with rhi... Cowpea is multipurpose, leguminous, high protein crop in the tropics that provides food for humans and fodder for animals. The crop adds nitrogen and other nutrients to the soil through symbiotic relationship with rhizobia and direct decomposition of cowpea by-products. Despite its multiple benefits for humankind, the yield of cowpea is far below its potential and its production in the crop’s birthplace of Africa is especially affected by abiotic factors. Soil moisture deficit is one of the main abiotic factors that affect the yield of cowpea in the semi-arid tropics, including the Sahelian and Guinea Savannah regions in West Africa. Even though cowpea is a drought tolerant legume, different genotypes respond differently to drought, resulting in up to 100% or more yield increases in the case of resistant genotypes or 50% or more yield loss in case of susceptible types. Mitigating the effect of soil moisture deficit on cowpea production requires selection of genotypes that can withstand drought. With this in mind, the goal of this study was to identify drought tolerant cowpea germplasm for the Savannah region of Northern Ghana using cultivated genotypes from the United States Department of Agriculture (USDA) tested with and without irrigation at the Bontanga irrigation facility during the dry season in 2018. Fifty genotypes were used, which included 45 imported from USDA and five (5) local genotypes from the Savannah Agriculture Research Institute (SARI). The experiment had 2 × 50 factorial treatments (irrigation × genotypes) and consisted of randomized complete block design with three (3) replications per treatment. Two (2) watering regimes were introduced namely, drought stressed (no irrigation) and non-stressed/control (irrigated). Morpho-physiological, phenological and yield data were taken on the cowpeas evaluated with drought tolerance assessed based on grain yield data and derived indices. All parameters measured showed significant differences (p ≤ 0.05) except for the number of branches per plant. Ge 展开更多
关键词 Tolerance COWPEA Stress Selection DROUGHT
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Effect of Compositing Precooked Cowpea with Improved Malted Finger Millet on Anti-Nutrients Content and Sensory Attributes of Complementary Porridge 预览
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作者 Cyprian O. Syeunda Joseph O. Anyango Abdul K. Faraj 《食品与营养科学(英文)》 2019年第9期1157-1178,共22页
Protein energy malnutrition remains a huge burden in Sub-Saharan Africa. Principally, it is due to children being fed on millet gruels which are high in carbohydrates, and low protein. Moreover, they contain significa... Protein energy malnutrition remains a huge burden in Sub-Saharan Africa. Principally, it is due to children being fed on millet gruels which are high in carbohydrates, and low protein. Moreover, they contain significant amounts of anti-nutrients such as phytates, phenols and tannins. Compositing of malted finger millet flour with other flours has potential for improving the nutritional quality and sensory attributes of these foods. The objective of this study was to determine the effect of compositing malted finger millet flour with cowpea on the anti-nutritional contents and sensory properties of formulated baby weaning food. Mixing selected improved finger millet varieties with precooked cowpea flour was based on WHO recommended levels. There was a significant (p 0.05) reduction in total phenolic content, tannin content and phytic acid by 41%, 50%, and 44%, after compositing with malted finger millet and precooked cowpea at 10.32%, 21.26% and 32.75%, respectively. Cooking process significantly reduced amount of trypsin inhibitors, and other anti-nutrients both in cowpea and complementary porridge. Loadings from principal component analysis (PCA) of 17 sensory attributes of porridge showed that approximately over 80% of the variations in sensory attributes were explained by the first four principal components. Reductions in texture attributes (stickiness and viscosity) and astringency aftertaste corresponded to increase in overall aroma and flavour of the porridge in terms of malty flavour and aroma. Although inclusion of 32.75% precooked cowpea gave the highest reduction in anti-nutrients, it resulted in cooked cowpea flavour. For consumer acceptability, it may require masking by use of commercial flavours. Therefore this work shows that malted finger millet-pre-cooked cowpea have potential to be used in formulating cultural acceptable complementary food. 展开更多
关键词 Finger MILLET COWPEA MALTING ANTI-NUTRIENTS WEANING Food
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气相色谱-串联质谱法检测植物源性食品中83种农药残留
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作者 周佳 陈小泉 +2 位作者 罗婷婷 杜钢 黄瑛 《食品安全质量检测学报》 CAS 2019年第17期5791-5808,共18页
目的建立气相色谱-串联质谱法(gas chromatography-tandem mass spectrometry,GC-MS/MS)检测植物源性食品中测定83种农药残留的分析方法。方法样品经过匀浆,加入乙腈后冷藏,采用优化的QuEChERS法提取净化,浓缩后丙酮复溶,在动态多反应... 目的建立气相色谱-串联质谱法(gas chromatography-tandem mass spectrometry,GC-MS/MS)检测植物源性食品中测定83种农药残留的分析方法。方法样品经过匀浆,加入乙腈后冷藏,采用优化的QuEChERS法提取净化,浓缩后丙酮复溶,在动态多反应监测模式(dynamic multiple reaction monitoring mode,dMRM)下进行检测,外标法定量。结果该方法一针25min内完成83种目标化合物的分离分析,在0.0125~0.600μg/mL范围内,83种农药线性良好,相关系数大于0.996。取草莓、豇豆、空心菜、芹菜空白基质,添加50μg/kg浓度水平的加标实验,结果超过95%的农药平均回收率在60.2%~135.2%,重复性RSD<10%(n=6)。结论该方法前处理简单,快速,方法准确度、灵敏度满足定量分析的要求,适用于植物源性食品中农药多残留的日常快速检测。 展开更多
关键词 QUECHERS 气相色谱-串联质谱法 多农药残留 草莓 豇豆 空心菜 芹菜
矮生豇豆新品种“长秆矮豇”的选育 预览
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作者 王强 缪其松 +1 位作者 王夏 孙菲菲 《蔬菜》 2019年第1期79-82,共4页
为了解决在生产中矮生豇豆豆荚易拖地而影响其品质和产量的问题,以架豇豆自交系cg-1-3为母本,以美国无支架豇豆为父本,进行杂交、分离后,经系统选育,培育出矮生豇豆新品种——长秆矮豇。其矮生,中晚熟,荚长30~40 cm、粗0.7~0.8 cm,单荚... 为了解决在生产中矮生豇豆豆荚易拖地而影响其品质和产量的问题,以架豇豆自交系cg-1-3为母本,以美国无支架豇豆为父本,进行杂交、分离后,经系统选育,培育出矮生豇豆新品种——长秆矮豇。其矮生,中晚熟,荚长30~40 cm、粗0.7~0.8 cm,单荚质量为12~16 g,长圆条形,每荚籽粒数为9~12粒;豆荚肉质脆嫩,纤维少,味甜,品质优;花梗长而硬,长度大多数在35~45cm,高于豇豆长度和植株叶片高度,对豇豆荚起强烈的支撑作用,并保证豇豆在整个生长期间基本不拖地,便于采收。667m2产量1 300 kg左右,田间对锈病、叶斑病的抗性强于对照美国无支架豇豆,具有抗逆性强、适应性广等特性。 展开更多
关键词 新品种 矮生 豇豆 选育
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Interactive Effect of Blackeye cowpea mosaic virus and Cucumber mosaic virus on Vigna unguiculata
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作者 Ayodele Anthony Fajinmi 《园艺学报:英文版》 2019年第2期88-92,共5页
This research tries to demonstrate physiological effect of combined infection of two viruses on growth parameter of cowpea plant as demonstrated through symptom expression. Blackeye cowpea mosaic virus(BlCMV) and Cucu... This research tries to demonstrate physiological effect of combined infection of two viruses on growth parameter of cowpea plant as demonstrated through symptom expression. Blackeye cowpea mosaic virus(BlCMV) and Cucumber mosaic virus(CMV) were transmitted to cowpea plants by mechanical rub inoculation. This study showed that the differences in stem height and final aboveground fresh weight of cowpea plants inoculated with mixed infection with CMV and BlCMV were significantly less than those of plants inoculated with a single virus. Likewise cowpea plants inoculated with either virus alone or with CMV and BlCMV mixed infection had less stem height and aboveground fresh weight than the control. The mixed infection of BlCMV and CMV caused significant increase in the severity of symptoms in cowpea and also in the height using factors analysis and Abbott’s equation. Symptom severity rating scale used, demonstrated statistical proof for physiological effect based on symptom severity for co-infection. A three phase disease symptom severity expression revealed disease severity for each viral treatment associated with host plant. 展开更多
关键词 COWPEA VIRUS MIXED INFECTION interaction SEVERITY SYMPTOM
通过式固相萃取净化/超高效液相色谱-串联质谱法测定黄瓜、番茄及豇豆中的克百威与涕灭威残留 预览
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作者 覃国新 劳水兵 +8 位作者 莫仁甫 闫飞燕 王静 金茂俊 何洁 周其峰 杨玉霞 王海军 陈伟 《分析测试学报》 CAS CSCD 北大核心 2019年第8期967-972,共6页
建立了黄瓜、番茄和豇豆中克百威和涕灭威及其代谢物3-羟基克百威、涕灭威砜、涕灭威亚砜的超高效液相色谱-串联质谱检测方法。样品经乙腈和QuEChERS(0.5g柠檬酸二钠盐水合物、1g无水柠檬酸钠、1g氯化钠、4gMgSO4)提取盐包提取,OasisPRi... 建立了黄瓜、番茄和豇豆中克百威和涕灭威及其代谢物3-羟基克百威、涕灭威砜、涕灭威亚砜的超高效液相色谱-串联质谱检测方法。样品经乙腈和QuEChERS(0.5g柠檬酸二钠盐水合物、1g无水柠檬酸钠、1g氯化钠、4gMgSO4)提取盐包提取,OasisPRiMEHLB固相萃取柱通过式净化,超高效液相色谱-串联质谱(UPLC-MS/MS)进行检测,采用空白基质匹配的校准曲线外标法定量。结果显示,2种农药及其代谢物均在0.001~0.5mg/L范围内呈良好的线性关系,相关系数均大于0.9960。在0.02~0.2mg/kg加标浓度范围内的平均回收率为80.4%~110%,相对标准偏差(RSD)为1.1%~4.8%。克百威、3-羟基克百威、涕灭威、涕灭威砜和涕灭威亚砜的检出限(LOD)分别为0.07、0.3、1.0、4.0、13μg/kg,定量下限(LOQ)分别为0.2、1.0、2.0、13、42μg/kg。 展开更多
关键词 通过式固相萃取 超高效液相色谱-串联质谱 黄瓜 番茄 豇豆 克百威 涕灭威 代谢物
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基于“3414”试验的长豇豆肥效模型及推荐施肥量研究 预览
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作者 李赛慧 吴东涛 +3 位作者 刘术新 尹梦斯 夏俊龙 丁枫华 《丽水学院学报》 2019年第2期68-74,共7页
为了研究氮磷钾平衡施肥对长豇豆产量和品质的影响,采用“3414”方案进行长豇豆田间肥效试验,对长豇豆产量、可溶性糖、可溶性蛋白、维生素C和亚硝酸盐含量进行测定。研究表明:适当提高钾肥浓度可使长豇豆的可溶性糖含量增加,提高氮肥... 为了研究氮磷钾平衡施肥对长豇豆产量和品质的影响,采用“3414”方案进行长豇豆田间肥效试验,对长豇豆产量、可溶性糖、可溶性蛋白、维生素C和亚硝酸盐含量进行测定。研究表明:适当提高钾肥浓度可使长豇豆的可溶性糖含量增加,提高氮肥浓度可使长豇豆的维生素C含量提高;可溶性蛋白含量受施肥量影响不大,而平衡施肥可在一定程度上降低长豇豆亚硝酸盐的含量,过量则会导致亚硝酸盐含量升高;根据各项品质指标随时间的变化,推荐结果盛期采摘以获得最佳品质。氮磷钾不同施肥处理下长豇豆的增产率为37.3%~50.2%。长豇豆产量对土壤肥力的依存率为66.5%,表明长豇豆对施肥的依赖性较大。综合各处理产量、土壤肥力丰缺情况以及肥料利用率等方面,在改善灌溉方式提高肥料利用率的基础上,初步提出区域长豇豆推荐施肥量为N:220~250kg/hm^2、P2O5:250~310 kg/hm^2、K2O:220~260 kg/hm^2。同时配施有机肥以提高土壤有机质含量,缓解土壤酸化。平衡的氮磷钾可使长豇豆达到增产的目的,并提高长豇豆品质。 展开更多
关键词 长豇豆 肥效模型 施肥量
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豇豆新品种'苏紫豇2号'的选育 预览
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作者 张红梅 刘晓庆 +3 位作者 陈华涛 袁星星 崔晓艳 陈新 《中国瓜菜》 CAS 北大核心 2019年第7期50-52,I0004共4页
‘苏紫豇2号’是以结荚性强的'春秋红'为母本、以早熟且抗病性强的‘早豇1号’为父本杂交后,通过连续6代系统选育而成的豇豆新品种。植株蔓生,株高3.0m左右。早熟,出苗至始收51.5d左右,全生育期86.5d左右。花紫色,种子红白花斑... ‘苏紫豇2号’是以结荚性强的'春秋红'为母本、以早熟且抗病性强的‘早豇1号’为父本杂交后,通过连续6代系统选育而成的豇豆新品种。植株蔓生,株高3.0m左右。早熟,出苗至始收51.5d左右,全生育期86.5d左右。花紫色,种子红白花斑。商品荚紫色,荚长64.3cm左右,单荚质量25.8g。豆荚肉质细嫩,商品性好,667m^2豆荚产量2100kg左右。适合江苏省春秋季种植。2018年通过江苏省园艺学会鉴定。 展开更多
关键词 豇豆 新品种 '苏紫豇2号’
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豇豆播种期与开花期函数模型构建 预览
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作者 康杰 张忠武 +4 位作者 孙信成 詹远华 杨连勇 彭元群 陈位平 《江汉大学学报:自然科学版》 2019年第3期204-208,共5页
为了便于豇豆生产者掌握豇豆最佳播种期,实现豇豆预期上市,整理了16年来16次'早生王'豇豆的播种期与开花期数据,并进行相关及回归分析。结果表明:播种期(x)与开花期(y)的相关系数为- 0. 842,达到极显著相关水平;随着播种期推迟... 为了便于豇豆生产者掌握豇豆最佳播种期,实现豇豆预期上市,整理了16年来16次'早生王'豇豆的播种期与开花期数据,并进行相关及回归分析。结果表明:播种期(x)与开花期(y)的相关系数为- 0. 842,达到极显著相关水平;随着播种期推迟,豇豆开花期却缩短;播种期与开花期的关系式可表述为:y = 82. 854 - 12. 619 x + 1. 098 x^2 - 0. 032 x^3。该回归关系拟合优度极显著,可用于实践中根据播种期估测开花期,或根据上市期推断播种期,以指导豇豆生产。 展开更多
关键词 豇豆 播种期 开花期 函数模型
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豇豆种子水引发研究 预览
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作者 罗金梅 张忠武 +2 位作者 孙信成 陈位平 彭元群 《农学学报》 2019年第9期45-48,共4页
为了探讨打破豇豆种子休眠的处理途径,以‘天畅一号’豇豆为试材,在20℃水温、6种不同时间引发后进行再烘干处理,分析在浸种过程中的种子膨大率、吸水率及处理后的发芽率变化。结果表明,在引发24 h内,随着引发时间的延长,种子膨大速度... 为了探讨打破豇豆种子休眠的处理途径,以‘天畅一号’豇豆为试材,在20℃水温、6种不同时间引发后进行再烘干处理,分析在浸种过程中的种子膨大率、吸水率及处理后的发芽率变化。结果表明,在引发24 h内,随着引发时间的延长,种子膨大速度呈现“快—慢—急快”的规律,吸水率和发芽率逐渐升高;引发12 h与引发24 h相比,其发芽率比较相近,分别是85%和88%。结论认为,新收获的豇豆种子在20℃下引发12 h能够满足生产需求。 展开更多
关键词 豇豆 种子 水引发 膨胀 发芽率
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彩色防虫网覆盖光质差异及其对豇豆生长和产量的影响 预览
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作者 陈连珠 张雪彬 +1 位作者 陶凯 杨小锋 《广东农业科学》 CAS 2019年第2期45-50,共6页
【目的】探讨彩色防虫网内光质差异及对豇豆生长和产量影响,为豇豆光调控技术提供理论依据。【方法】以露地作为对照,研究咖啡网、黄网、红网、绿网、蓝网、银灰网、白网等7种彩色防虫网覆盖下光谱成分及豇豆生长周期、生长特性、干物... 【目的】探讨彩色防虫网内光质差异及对豇豆生长和产量影响,为豇豆光调控技术提供理论依据。【方法】以露地作为对照,研究咖啡网、黄网、红网、绿网、蓝网、银灰网、白网等7种彩色防虫网覆盖下光谱成分及豇豆生长周期、生长特性、干物质分配及产量差异。【结果】与露地相比,防虫网内远红光及近红外光的比例增加,紫外光的比例和红光/远红光降低,绿网内绿光和蓝紫光比例较高,绿光较露地增加3.29%,而红网内红光比例较高,较对照增加24.96%;防虫网内豇豆的抽蔓期提前5~7 d,黄网、红网和蓝网覆盖下豇豆的始花期较露地提前;叶片厚度均较露地显著下降,株高、单叶叶面积和节间长增加,以红网变化最显著;覆盖防虫网可提高豇豆总产量和前期产量,白网总产量最大、其次为绿网,分别较对照增产43.46%和42.02%,二者差异不显著。【结论】在豇豆生产中建议采用白网或绿网覆盖栽培,从而提高产量和上市时间。 展开更多
关键词 豇豆 彩色防虫网 光谱 生长 产量
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60Co-γ射线诱导豇豆M2代群体变异分析及突变株筛选 预览
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作者 张忠武 邓钢桥 +6 位作者 孙信成 詹远华 田军 杨连勇 康杰 彭元群 陈位平 《中国农学通报》 2019年第4期23-32,共10页
为获得豇豆诱变材料,用60Co-γ射线诱变豇豆品种‘早生王’和‘詹豇215’的干种子,统计M2代的育性,并对7个农艺性状变异程度进行相关分析和聚类分析。结果表明,M2代群体中产生一些白化苗、纤弱苗或无花粉的不育株,正常结实植株的农艺性... 为获得豇豆诱变材料,用60Co-γ射线诱变豇豆品种‘早生王’和‘詹豇215’的干种子,统计M2代的育性,并对7个农艺性状变异程度进行相关分析和聚类分析。结果表明,M2代群体中产生一些白化苗、纤弱苗或无花粉的不育株,正常结实植株的农艺性状变异系数增大,依次为分枝数>结荚数>有效花梗数>初花节位>最大荚长>平均荚长>开花期。其中前三者之间呈极显著正相关;最大荚长与平均荚长,开花期与初花节位呈极显著正相关;开花期与结荚数呈极显著负相关。M2代均可聚为6个类群,‘早生王’的性状变异株率为27.49%,‘詹豇215’为24.55%,并分别从中筛选出变异株33个和40个。以分枝数、结荚数、有效花梗数为重点考察性状,有利获得变异个体,其中结荚数对丰产型材料筛选具有更重要意义。 展开更多
关键词 Γ射线 豇豆 变异 筛选
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不同施肥处理对豇豆品质、产量及经济效益的影响 预览
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作者 吴旭东 陈莉莉 +8 位作者 马明 陈秋实 黄忠阳 刘庆叶 周晓平 陈奎礼 王蓓 李伟明 王东升 《长江蔬菜》 2019年第2期66-69,共4页
研究了不同施肥处理对豇豆产量与品质的影响,以期找到一种适合豇豆的施肥配方。试验结果表明,施用生物有机肥+复合肥后,豇豆的产量和品质较不施用任何肥料的空白对照和有机肥+复合肥处理显著提高,而施用生物有机肥+减施30%复合肥的处理... 研究了不同施肥处理对豇豆产量与品质的影响,以期找到一种适合豇豆的施肥配方。试验结果表明,施用生物有机肥+复合肥后,豇豆的产量和品质较不施用任何肥料的空白对照和有机肥+复合肥处理显著提高,而施用生物有机肥+减施30%复合肥的处理,虽然减少了复合肥用量,但产量、品质、经济效益均与施用生物有机肥+复合肥处理无显著差异。因此,施用生物有机肥+复合肥的配方比施用有机肥+复合肥配方效果好,而生物有机肥+减施30%复合肥的施肥配方最优,且减少了化肥施用。 展开更多
关键词 豇豆 有机肥 生物有机肥 复合肥 减施 产量 品质
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5%甲维盐WDG与10%虫螨腈SC复混制剂对豇豆豆荚螟的防治效果比较 预览
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作者 许佩 赵铭 +1 位作者 谭建军 谢礼萍 《长江蔬菜》 2019年第2期70-71,共2页
以5%甲维盐WDG(水分散粒剂)与10%虫螨腈SC(悬浮剂)复混制剂对豇豆豆荚螟速效性和持效期为判定指标,分别以一种速效性强,一种持效期长的化学农药作为对比,筛选出适合豇豆豆荚螟防治的用药配方。试验结果表明,5%甲维盐WDG与10%虫螨腈SC复... 以5%甲维盐WDG(水分散粒剂)与10%虫螨腈SC(悬浮剂)复混制剂对豇豆豆荚螟速效性和持效期为判定指标,分别以一种速效性强,一种持效期长的化学农药作为对比,筛选出适合豇豆豆荚螟防治的用药配方。试验结果表明,5%甲维盐WDG与10%虫螨腈SC复混制剂对豇豆豆荚螟的速效性优于2.5%溴氰菊酯EC(乳油),持效性优于34%乙多·甲氧虫SC。 展开更多
关键词 豇豆 豆荚螟 复混制剂 持续期 速效性
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豇豆萌芽期耐冷性综合鉴定与评价 预览
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作者 黄海涛 胡江 +2 位作者 徐冬梅 谭华强 李焕秀 《西北农业学报》 CAS CSCD 北大核心 2019年第2期237-246,共10页
以50个豇豆品种为试验材料,测定低温胁迫下(14℃)下能够发芽的43个品种低温胁迫与常温对照的相对发芽率(RGR)、相对发芽指数(RGI)、相对发芽活力指数(RVI)、相对胚根长(RRL)、相对胚根鲜质量(RRM)、相对总鲜质量(RTM)6个指标;采用主成... 以50个豇豆品种为试验材料,测定低温胁迫下(14℃)下能够发芽的43个品种低温胁迫与常温对照的相对发芽率(RGR)、相对发芽指数(RGI)、相对发芽活力指数(RVI)、相对胚根长(RRL)、相对胚根鲜质量(RRM)、相对总鲜质量(RTM)6个指标;采用主成分分析法、隶属函数分析法、聚类分析法、逐步回归分析法对14℃条件下发芽的43个品种进行萌芽期耐冷性分析。结果表明,统计的相对发芽率(RGR)、相对发芽指数(RGI)、相对发芽活力指数(RVI)、相对胚根长(RRL)、相对胚根鲜质量(RRM)、相对总鲜质量(RTM)6个指标仅相对发芽率(RGR)与相对胚根长(RRL)的相关性不显著,其他各指标间均呈显著性正相关,利用主成分分析法和隶属函数分析法得到耐冷性综合评价D值,利用聚类分析法对D值进行分类,将参试的43个豇豆的耐冷性分为4类:Ⅰ类(耐冷型)、Ⅱ类(中度耐冷型)、Ⅲ类(耐冷较差型)、Ⅳ类(冷敏感型);利用回归分析法建立适宜评价不同豇豆品种萌芽期耐冷性的最优回归方程:D=-0.357+1.032X2+0.404X3+0.555X6。研究筛选到耐冷型豇豆品种7个,冷敏感的品种9个。 展开更多
关键词 豇豆 萌芽期 耐冷性 种质资源
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Proximate and Mineral Compositions of Noodles Made from Triticum durum, Digitaria exilis, Vigna unguiculata Flour and Moringa oleifera Powder 预览
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作者 Catherine A.Orisa Ukpong SUdofia(PhD) 《食品科学与工程:英文版(美国)》 2019年第7期276-286,共11页
The objective of this study was to determine the proximate,mineral and sensory properties of noodles prepared from blends of Triticum durum(wheat),Digitaria exilis(acha),Vigna unguiculata(cowpea)flours and Moringa ole... The objective of this study was to determine the proximate,mineral and sensory properties of noodles prepared from blends of Triticum durum(wheat),Digitaria exilis(acha),Vigna unguiculata(cowpea)flours and Moringa oleifera leaf powder(MLP).The flour samples were mixed in a four by four factorial,in complete randomized design(CRD)to formulate the composite blends at four different levels(25,50,75 and 100)which gave 16 samples.The flour samples were used to produce noodles and subjected to proximate,mineral and sensory analysis.Results of the proximate composition revealed that moisture content of the noodles ranged from 8.04-13.81%,ash 1.84-3.67%,fat 1.95-3.61%,crude protein 10.07-14.44%,carbohydrate 33.15-61.45%,dietary fibre 16.65-36.22%and caloric value 214.53-288.28 kJ/100 g.There was a significant increase(p<0.05)in the moisture,ash,fat,crude protein and dietary fibre of the noodles on the substitution with cowpea flour,acha flour and MLP.Results of mineral composition also showed that sodium content ranged from 1.58-11.76 mg/100 g,potassium 26.70-40.40 mg/100 g,calcium 18.03-59.02 mg/100 g,iron 6.18-21.53 mg/100 g and phosphorus 0.51-1.54 mg/100 g.Noodle sample produced from 75%wheat and 25%cowpea flours were significantly higher(p<0.05)in mineral content(except for potassium).Sensory evaluation results showed that cowpea and acha flours can be substituted at 25%levels with 75%,wheat flour and acha flour can as well be substituted at 50%with 50%cowpea flour while MLP at 2%with 50%wheat flour,23%acha flour and 25%cowpea flour without significantly(p<0.05)affected the sensory attributes of the noodles.This result therefore indicates that the use of these locally grown crops has the potential to increase the nutritional intake of consumers of this product. 展开更多
关键词 PROXIMATE MINERAL acha COWPEA Moringa oleifera
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轮作不同叶菜对连作豇豆土壤养分及微生物特性的影响 预览
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作者 倪苗 成善汉 +5 位作者 韩旭 王龙飞 雷欣 居利香 汪志伟 朱国鹏 《中国蔬菜》 北大核心 2019年第5期64-69,共6页
以豇豆为主茬,分别轮作菜薹(菜心)、苋菜、蕹菜(空心菜)、芥菜、大白菜等5种作物,探讨轮作不同叶菜对设施栽培豇豆连作土壤养分与微生物特性的影响。结果表明,轮作苋菜后豇豆土壤pH、有机质、碱解氮、速效磷含量均显著提高,细菌OTU数与C... 以豇豆为主茬,分别轮作菜薹(菜心)、苋菜、蕹菜(空心菜)、芥菜、大白菜等5种作物,探讨轮作不同叶菜对设施栽培豇豆连作土壤养分与微生物特性的影响。结果表明,轮作苋菜后豇豆土壤pH、有机质、碱解氮、速效磷含量均显著提高,细菌OTU数与Chao1指数以及真菌OTU数与Shannon指数都显著高于对照。各轮作处理土壤细菌和真菌群落组成发生了改变,轮作处理能够提高土壤细菌群落的丰度和真菌群落的多样性,有利于保持土壤微生物群落结构的稳定。其中豇豆与苋菜轮作效果最佳,可以在大棚豇豆生产中示范推广。 展开更多
关键词 豇豆 轮作 苋菜 土壤养分 土壤微生物
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