木薯酒中的主要化学成份及其对酒质的影响     

赵正平  龚兆胜 《云南农业大学学报(自然科学版)》1999,14(3):270-272

 通过气相色谱-质谱联合仪对木薯酒成份的分析,讨论了木薯酒产生异味的原因,并提出改善木薯酒质量的措施。  相似文献   

木薯后期衰老对淀粉积累的影响     

罗兴录  张平刚  莫凡  岑忠用  谢和霞  潘英华  池敏青 《中国农学通报》2006,22(7):302-305

对新选056、南洋红、GR891、辐选01、华南124和新选048六个木薯品种生育后期抗衰老生理和淀粉积累特性进行研究。结果表明:不同木薯品种生育后期抗衰老生理与淀粉积累特性有明显差异,木薯后期茎叶生长状况对块根淀粉积累有明显影响,后期茎叶过早衰老或生长过旺对块根淀粉积累都不利。对抗衰老能力最强的是华南124,其次是辐选01和新选048,抗衰老能力最弱的是南洋红。其中新选056、南洋红、GR891、辐选01、华南124和新选048生育后期叶片过氧化物酶活性分别为383.93△OD470/gFw.min,279.33△OD470/gFw.min,405.20△OD470/gFw.min,445.97△OD470/gFw.min,364.43△OD470/gFw.min和202.20△OD470/gFw.min;丙二醛含量分别为0.0178μmol/gFW,0.0189μmol/gFW,0.0237μmol/gFW,0.0153μmol/gFW,0.0128μmol/gFW和0.0140μmol/gFW;可溶性糖含量分别为0.74%,0.70%,1.02%,0.84%,1.12%和1.30%;自由水/束缚水比值分别为3.07,4.77,6.85,3.64,2.57和3.11;块根淀粉含量分别为29.6%,25.8%,32.8%,32.7%,25.6%和28.9%。  相似文献   

木薯主要农艺性状的遗传变异、相关性和主成分分析   总被引：7，自引：1，他引：7  

杨守臻  陈怀珠  李初英  孙祖东 《中国农学通报》2006,22(7):232-234

对广西14个主要木薯品种的9个农艺性状进行了遗传变异分析、相关性分析和主成分分析。结果表明,块根长,块根鲜重、块根数的变异系数较大,分别为13.95%、11.33%、10.22%,块根干物质率和茎径的变异系数最小,分别为7.00%和6.57%;在相关性上,产量与块根数呈极显著的正相关,块根干物质率与块根淀粉含量呈极显著的正相关;主成分分析结果表明,前4个主成分对变异的贡献率达85.69%。在性状选择上,首先对变异大的性状进行选择是非常重要的。在品种选择时,应注意选择产量和淀粉含量均高的品种。  相似文献   

Assessment of genetic diversity among African cassava Manihot esculenta Grantz accessions resistant to the cassava mosaic virus disease using SSR markers   总被引：1，自引：0，他引：1  

Yvonne Lokko  Alfred Dixon  Sam Offei  Eric Danquah  Martin Fregene 《Genetic Resources and Crop Evolution》2006,53(7):1441-1453

A study was conducted to determine the extent of genetic diversity among African cassava (Manihot esculenta Crantz) accessions resistant to the cassava mosaic virus disease (CMD), using simple sequence repeat (SSR) markers. The accessions included a breeding stock (clone 58308), five improved lines, 62 CMD resistant and 10 CMD susceptible landraces. Genetic diversity was assessed among accessions in five cluster groups derived from UPGMA analysis on data from 18 SSR primer pairs. Average gene diversity, He, was high in all cluster groups, with an average heterozygosity of 0.591 ± 0.061. The estimator of inbreeding Fis revealed a low level of inbreeding within groups and averaged −0.262 ± 0.142. Gene diversity among all accessions was 51.4% and gene diversity within cluster groups was 46.6%, while 4.8% was due to diversity between the different cluster groups. The amount of genetic differentiation measured by Gst and Fst were 9.6% and 12.1% respectively, indicating a weak genetic structure.  相似文献   

广西能源木薯可持续发展的优势、问题和对策     

班美玲  周生茂  韦本辉  林卫东  李宝会 《安徽农业科学》2007,35(33):10824-10827

在评估了广西发展能源木薯优势的基础上,从政策、品种、耕种措施和市场风险等角度分析了广西木薯可持续发展存在的问题,并提出了相应的解决对策。  相似文献   

Characterization of lettuce (Lactuca sativa L.) grown with biopesticides and deltamethrin     

Simone Palma Favaro  Yardlei Carlos AlbaAnderson Dias Vieira de Souza  Antonio Camilo Arguelho ViannaAntonia Railda Roel 《Scientia Horticulturae》2011

The purpose of this study was to evaluate the physico-chemical characteristics and the post-harvest loss of mass of curly lettuce (Lactuca sativa L.) cv. Verônica that was grown in a protective environment with applications of biopesticides. The curly lettuce was treated by spraying with neem oil, cassava flour wastewater (manipueira), biofertiliser or the control treatment of deltamethrin. We determined the weight, circumference, dry matter, ash, crude protein, total phenols and minerals profile for the heads of lettuce. After harvesting, the lettuce was packed into opened plastic bags and kept at 5 °C for 5 days to evaluate its weight loss. No differences were observed among the treatments for the physico-chemical parameters. The lettuce that was sprayed with manipueira or biofertiliser had the greatest weight loss during storage. The achievement of similar yields with cheaper products suggests a benefit of using organic bioinsecticides.  相似文献   

Influence of changes in land use and earthworm activities on carbon and nitrogen dynamics in a steepland ecosystem in Northern Vietnam   总被引：1，自引：0，他引：1  

P. Jouquet  F. Bernard-Reversat  N. Bottinelli  D. Orange  C. Rouland-Lefèvre  T. Tran Duc  P. Podwojewski 《Biology and Fertility of Soils》2007,44(1):69-77

  相似文献   

Comparisons of the influence of vesicular-arbuscular mycorrhiza on the productivity of hedgerow woody legumes and cassava at the top and the base of a hillslope in alley cropping systems     

M. O. Atayese  O. O. Awotoye  O. Osonubi  K. Mulongoy 《Biology and Fertility of Soils》1993,16(3):198-204

We investigated the influence of vesicular-arbuscular mycorrhizal (VAM) inoculation on growth and nutrient relationships in two alley-cropping trials, one at the top and the other at the base of a hillslope. Each trial involved three woody hedgerow legumes with cassava (Manihot esculenta Crantz) as the sole intercrop. The hedgerow trees at the base of the slope showed greater survival and higher leaf dry weights than those at the top of the slope, although these parameters were not affected by VAM inoculation, either at the top or the base of the slope. In contrast to survival, the uptake of nutrients, particularly P and N, was higher for inoculated than uninoculated hedgerow trees, both at the top and at the base of slope. Increases in stem and leaf biomass and the uptake of nutrients by the trees were strongly correlated with increases in P uptake, indicating that the improvements were attributable to VAM inoculation. Cassava tuber yields at the base of the slope, from inoculated or uninoculated plants, were significantly greater than the corresponding cassava yields at the top of the slope. These increases at the base of the slope compared to the top of the slope were not attributed to available soil nutrients but to greater VAM spore density. Higher available soil moisture may have been another factor. Increasing the VAM spore density of effective mycorrhiza through proper agronomic practices at the top of a slope may bring about comparable yields on different parts of the slope.  相似文献   

木薯酒糟干法疏水改性研究     

廖浩伯  胡华宇  罗袁伟  蒙晓东  王荣文  韦敏勇  覃爱云  黄祖强 《安徽农业科学》2012,40(15):8736-8737

[目的]对木薯酒糟进行干法疏水改性,使其表面包覆一层疏水性物质,以利于促进与塑料基体的界面相容性。[方法]采用铝酸酯偶联剂对木薯酒糟进行疏水改性处理,通过活化指数指标,考察偶联剂用量、反应温度、反应时间、转速等因素对疏水性能的影响。[结果]偶联剂用量6%,反应温度100℃,反应时间10 min,转速1 100 r/min,可获得活化指数91.33%的较为理想的疏水效果。[结论]木薯酒糟经改性后由亲水性表面转变为强疏水性表面。  相似文献   

丘陵红壤旱地花生木薯间作适宜间距研究   总被引：1，自引：1，他引：0  

徐小林  黄欠如  叶川  成艳红  余喜初  李大明  熊春贵 《江西农业学报》2012,24(4):20-22,25

在丘陵红壤旱地花生主产区,以花生、木薯纯作为对照,通过不同花生木薯间作研究了木薯对花生负面空间影响距离和木薯间作适宜行距,及间作木薯对土地利用率的影响。结果表明:花生间作木薯(不明显降低花生产量的前提下)种植系统中木薯对花生的负面影响空间距离为40 cm左右,木薯间作适宜行距不低于374 cm;且花生木薯宽行间作可明显提高丘陵红壤的土地利用率,纯收入提高58.3%。  相似文献