甘薯新品种综合性状鉴定与利用前景分析

组织安排了金山67、连薯98、泉薯84等9个甘薯新品种在龙岩、泉州等9个点进行三重复试验,结果表明,不同品种间产量存在极显著差异,品种与地点互作也存在极显著差异.泉薯84、宁薯6号等品种产量、农艺性状等表现突出,可进一步加大试验力度.     

优质紫色甘薯新品种比较与鉴定

为筛选出具有丰产性、稳产性、适应性、抗逆性、品质优良并适合福清市栽培的紫色甘薯新品种,2021 年引进鉴定了11 个优质紫色甘薯新品种,综合考察了 11 个甘薯新品种的特征特性、产量表现、品质表现和抗病性等。结果表明：龙紫 4 号产量表现好,比对照增产达极显著水平,外观品质和食味品质好,建议作为高产鲜食或加工型紫薯品种进行示范推广;龙紫 12 号、金薯 20 和莆紫薯 18 产量表现较好,结薯集中,薯型美观,薯块均匀,其中龙紫 12 号干物质率和淀粉率高,建议作为高产紫色淀粉型甘薯品种开展生产试验,而金薯 20 和莆紫薯 18 食味品质好,建议作为高产鲜食或加工型紫薯品种开展生产试验;龙紫221、福宁紫 5 号产量表现一般,薯型较美观,干物质率和淀粉率较高,建议继续开展试验进行鉴定;福薯 34、龙紫 6 号和金薯17 外观品质较好,抗逆性较强,但产量表现一般,建议继续开展试验进行鉴定;泉紫薯 96 和福宁紫 6 号综合表现较差,建议终止试验。     

鲜食甘薯新品种在不同生态环境下鉴选初报

采用1年2点随机区组设计对15个甘薯品种进行引种筛选试验,综合分析植株生长、丰产性、稳产性,筛选出产量潜力高、适应性强的品种。结果表明,15个品种特征特性差异明显,15个品种萌芽性中等以上,比紫云红心薯(对照)极显著增产的有龙薯9号、苏薯14、黔薯8号、黔薯5号、苏薯16,且大、中薯产量高,较对照增产显著。龙薯9号、黔薯8号、黔薯5号适宜在凯里地区种植,苏薯16适宜在习水地区种植,苏薯14的稳定性较好,可在两地种植。鲜食品种推广还应兼顾食味品质和商品率。     

甘薯新品种的引进鉴定与示范

2012-2014年对广薯87、商薯19号等9个品种的丰产性和适应性进行鉴定。试验结果表明,9个品种3个年份及其互作均达到极显著水平。兼用型品种广薯87鲜薯产量3198.40kg/667m2,比对照增产28.11%;商薯19号鲜薯产量3157.18kg/667m2,比对照增产26.46%;这2个品种鲜薯产量高,食味好,商品性突出,可以作为淀粉加工和鲜食品种栽植;龙薯9号平均鲜薯产量3253.67kg/667m2,比对照徐薯22号增产30.33%,可以作为鲜食型和一年双季栽培。     

甘薯良种苏薯8号的引试结果分析

2007年2月在玉溪农职院科技园引进8个省外优良脱毒甘薯新品种苏薯8号、鄂薯3号、鄂薯4号、鄂5205、渝薯153、渝薯162、渝薯123、渝I2-8进行产量和品质测定,并以当地板栗甘薯为对照品种进行引种试验。结果表明,苏薯8号的产量较高,迭3.61t／667m^2,肉色为桔黄色,食味香甜,在玉溪甘薯生产上有较大的引用价值。     

食用甘薯新品种引进鉴定试验

为引进适合漯河地区种植的食用甘薯品种,以当地普遍种植的食用甘薯普薯32为对照,对川薯228、烟薯25、岩薯5号、苏薯16、郑红28、龙薯601、广薯79共7个新品种进行了引进鉴定比较试验。结果表明:不同品种鲜产、干率、淀粉率存在差异。川薯228、烟薯25、岩薯5号、苏薯16 4个品种鲜产、干产和淀粉产量较高,大中薯率高,食味佳,适合在当地推广种植;广薯79和龙薯601丰产性不强,口味不佳,不建议在本地推广;郑红28丰产性较强,大中薯率较高,但干率和淀粉率较低,口味一般,建议作为搭配品种种植。     

2015-2016年贵州省甘薯新品种（系）区域试验

以福7-6和铜薯2号作为对照品种,对5个贵州新品种(系)甘薯进行区域比较试验.结果表明:品种F10-4、Q19-5和黔紫003产量均高于主要对照品种铜薯2号,其中F10-4与对照差异极显著,Q19-5和黔紫003与对照差异不显著;叶菜型甘薯品种黔菜1号产量显著高于主要对照品种福7-6;黔薯721产量偏低,但其薯型较好,商品薯率高.5个参试品种各有特色,均具有一定推广价值.     

甘薯新品种龙薯9号选育研究

根据甘薯产业化发展需要,采用最新育成品种间(岩薯5号/金山57)进行杂交,选育而成甘薯新品种龙薯9号,该品种具有早熟、高产、抗病、适应性广等特点;不但鲜薯、薯干产量均比对照金山57显著增产,而且可利用其早熟、高产的特点,实现甘薯生产的周年供应和抗灾救荒用种均有现实意义。     

马铃薯新品种试验与利用分析

福建省种子总站组织安排了坝57、坝58、鄂马铃薯5号等8个马铃薯新品种在福州、泉州等7个点进行三重复试验，试验结果表明，不同品种间产量存在极显著差异，品种与地点互作也存在极显著差异。坝58、闽薯1号、中薯3号、坝薯8号等品种产量、农艺性状等表现突出，可进一步加大试验力度。     

我国甘薯新品种试种亩产突破3吨

由中国热带农业科学院热带作物品种资源研究所引进在海南省试种的10个甘薯新品种喜获丰收。这批甘薯新品种平均亩产鲜薯逾2吨，其中龙薯3号、湛薯99-8两个品种亩产鲜薯3．1吨，超过海南省平均亩产1吨及全国平均亩产1．3吨的鲜薯产量。     

冷冻干燥速溶蛋花汤的加工技术

介绍了运用冷冻干燥技术进行速溶蛋花汤的加工,研究了生产工艺、特点以及影响产品质量的主要因素。试验表明,采用冷冻干燥技术加工的速溶蛋花汤,具有营养丰富、风味独特、方便快捷等特点。     

Measuring of Quantity of Matter-mass and the Measuring of Inertia of Matter-momentclm

A new definition of inertia,i.e. the momentum is the measuring of inertia of matter, is proposed. The article through and etc., subjects, the correctness of the new notion of inertia:The monentum is the measuring of inertia has been demonstrated, and the unsolved contradictions of the traditional definition of inetia. And the mass is the measuring of inertia has been revealed.     

香蕉遗传转化方法研究进展

香蕉是热带亚热带发展中国家重要的粮食作物和碳水化合物来源。但近年来,香蕉生产受到严重的病虫危害。大多数香蕉栽培品种是三倍体,生长周期长,而且不孕。由于没有种子,给繁殖和育种带来一定的困难。遗传转化技术的发展为香蕉品种的改良提供了一种有效的手段。香蕉的遗传转化方法有电激法、基因枪法、农杆菌介导法等。农杆菌介导法的应用是香蕉品种改良的一个重大突破。香蕉遗传转化的外植体也发展到多种,有原生质体,胚性细胞悬浮系,分生组织,以及横切薄片等。近几年,随着分子生物学的发展,出现了转化效率更高,重复性更好的香蕉遗传转化技术。如农杆菌和基因枪结合法,离心辅助农杆菌介导法、真空渗透技术等。这些新技术新方法的出现,必将推动香蕉产业高速发展。     

壳聚糖对石榴果汁澄清效果的影响

利用壳聚糖的絮凝作用对壳聚糖在甜石榴汁澄清中的应用效果进行了研究,试验结果表明,壳聚糖用量为0.3g/L、澄清时间为60min、温度为35℃时,甜石榴汁透光率可达85%以上,且通过对壳聚糖处理前后可溶性固形物、总酸、VC等营养成分含量的比较,确定以上工艺参数为甜石榴汁澄清的最佳选择。     

新疆布尔津县土地利用格局特征研究

基于RS与GIS技术,利用景观生态学理论及景观格局指数对布尔津县土地利用现状进行定量分析。结果显示为：（1）布尔津县以草地、林地为主要景观类型,镶嵌着耕地、水域等景观类型。（2）四个分区（即高山区、丘陵区、平原区、荒漠区）的林地资源组成差异明显,耕地、居民、交通及工矿用地集中分布在丘陵区和平原区（3）从各项指数来看,高山区的多样性指数较低;平原区是受人文因素最多的区域,景观优势度低,各种土地利用类型比例差异不大,有利于生态可持续发展,但要合理的开发利用;荒漠区生态环境相对脆弱,要加强生态环境的保护与改善。通过该研究对布尔津县的土地利用现状作一个了解,为该县乃至整个地区的景观规划和可持续发展战略提供科学依据。     

酸枣幼根原生质体的制备

以生长6～9 d的酸枣种子幼根为试验材料,0.7 mol·L-1甘露醇作为渗透压稳定剂、pH值5.5～6.0、28℃恒温水浴条件下,以光学显微镜观察的水解总时间、初始产生原生质体的时间、原生质体产量及细胞碎片量为指标,研究通过酶水解来制备酸枣幼根原生质体的方法.结果表明,在含1％果胶酶+4％纤维素酶R-10+3％纤维素...     

影响核桃贮藏品质因素的分析

介绍了几种核桃贮藏方法,综述了影响核桃贮藏品质的几个主要因素,以及针对上述影响因素提出若干解决对策.     

The Simulation of Comfort of Nine DOF of Automobile

Automobile comfort dynamic simulation is necessary when we predict and evaluate the comfort of a automobile or optimize performance of automobile. The nine DOF vibration model of automobile is established , which acts root mean square value of body in multiple work conditions as comfort evaluation indices. Based on the comfort simulation, the Hongyan 1160 is predicted in the way of comfort. The programmes can be used in many different automobiles . The computational result indicates that the model can simulate vibration of automobile truly. It is significant to research automobile comfort evaluation to optimize performance of automobile and comfort simulation .The computational program can be applied to optimize or simulate which has some reference value.     

Efficiency of water use of early plantings of sunflower

Rain fed crop production in Mediterranean environments depends to a large extent on strategies that avoid the intense summer drought. Early plantings of sunflower have given consistently higher yields in such environments, but the basis for such yield increases has not been explored. We conducted two field experiments at Cordoba (Spain) to investigate the effects of an early and a late planting date on the components of water-limited crop productivity; namely, water use (T), water use efficiency (TE) and harvest index (HI) of sunflower. The results were generalized by simulating rain fed sunflower yields, under early (1 January) and late (15 March) plantings, for a 25-year period with the aid of a simulation model of the Ceres type (OILCROP-SUN) which has been validated in Cordoba. Experimental seed yields of early plantings in 1989 and 1996 were 2.0 and 3.0 t ha⁻¹, while late plantings yields were 1.3 and 2.4 t ha⁻¹, for the 2 years. Average simulated yields were 2.7 ± 1.1 and 1.9 ± 0.7 t ha⁻¹ for early and late plantings, respectively. For the 2 years, T of early plantings was higher than that of late plantings, but the response of TE and HI to planting date was not the same in the two experiments. In the simulation exercise, T and TE of early plantings were consistently higher than those of late plantings, while there were no differences in the HI for the two planting dates. We conclude that early plantings of sunflower increase rain fed yields by increasing both T and TE, while the impact of planting date on HI very much depends on the crop water stress pattern, which is quite variable from year to year even in the predictable Mediterranean environment.     

Establishment of High-frequency Regeneration System of Explants of Alfalfa

The cotyledon and hypocotyl of eight varieties of alfalfa( Medicago sativa L. )are used to study the effect of different cultivation procedures and genotypes on embryogenic callus and embryoid induction,plant development and transplant of alfalfa.The varieties of alfalfa with high embryoid induction rate and high differentiation rate are screened. A high frequency regeneration system for alfalfa tissue culture is established:which is benifical to the gene transformation of alfalfa.