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马铃薯新品系对比试验分析评价 总被引:1,自引:0,他引:1
本试验通过对10个马铃薯新品系的块茎性状、产量及抗病性进行对比试验研究,筛选出增产极显著、抗病性较强、有望通过品种审定的新品系,为品种审定、推广提供依据。结果表明,早熟品系大200401-19较对照克新4号增产13.33%;中晚熟品系大200010-2比对照增产11.58%;高淀粉品系克200402-87比对照克新12号增产83.88%,这三个品系可进行生产试验。而中晚熟品系克200410-73比对照减产46.40%,应再进行试验,明确其推广性。 相似文献
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以东北地区选育的2个高淀粉马铃薯品种东农310和克新22号为试验材料,研究不同施钾量对高淀粉马铃薯品种块茎形成过程中淀粉合成相关酶活性的影响。结果表明,随着生育期的推进,不同施钾量处理马铃薯品种东农310和克新22号块茎中的腺苷二磷酸葡萄糖焦磷酸化酶(AGPase)、颗粒凝结性淀粉合成酶(GBSS)、可溶性淀粉合成酶(SSS)、淀粉分支酶(SBE)都呈现先增加、达到峰值后又开始下降的单峰曲线变化。增施钾肥对东农310和克新22号块茎淀粉合成中AGPase和GBSS活性影响比较大,而对SSS和SBE的活性影响较小。 相似文献
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本文分析了中国各大豆栽培区大豆遗传资源的生育期表现,东北春大豆区的大豆品种多为早熟和极早熟种。黄淮夏大豆品种以中热种居多。长江流域夏大豆品种成熟期分布比较分散,晚熟和极晚熟种多于早熟和中熟种。秋大豆则以中熟种占多数,大豆是以不同生育期和播期类型适应各地条件的,不同生育期的大豆遗传资源极为丰富。 相似文献
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马铃薯熟性是由多基因控制的数量性状,是我国不同栽培区划选择适宜品种的重要指标之一。本研究以晚熟品种中薯18号和早熟品种中薯5号及其F1分离群体为材料, 2018—2019年连续2年对“中薯18号(母本)×中薯5号(父本)”杂交分离群体进行熟性评价,从中筛选出极端晚熟和极端早熟的基因型各30个,并分别构建极端晚熟和极端早熟基因组DNA混池。利用简化基因组2b-RAD (2b-restriction site-associated DNA)技术测序,寻找差异标签开发出3个与熟性连锁的分子标记SCARA2-2、SCARA4-21和SCARA5-16,3个分子标记联合使用对熟性分离群体子代进行验证,晚、早熟表型符合率分别到达了87.5%和93.0%,这些分子标记的开发和联合使用对辅助马铃薯熟性选择具有重要的参考价值。 相似文献
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通过在黑龙江省内7个具有代表性的试验点对马铃薯新品种(系)的丰产性、稳产性、区域适应性等进行区域试验,结果表明:鲜食型品系克9723-20比对照克新2号增产11.5%,增产极显著且表现稳产,适应性广,有望通过品种审定,中早熟材料生物中心202比对照克新4号增产10.6%,表现丰产,但适应性不好,可在海伦以及与其生态条件相似的地区种植,高淀粉材料克20029-36比对照增产4.5%、炸片加工鲜食型材料克9903-99比对照克新2号增产7.6%。这两份材料在此次试验中表现一般,应进一步试验,确定其能否进行推广。 相似文献
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青海省马铃薯主要栽培品种的SSR遗传多样性 总被引:2,自引:0,他引:2
利用SSR标记分析了12份马铃薯栽培品种的遗传多样性及其亲缘关系,结果表明:(1)30对SSR引物共扩增出388条带,其中多态性条带为359条.(2)12份材料的遗传距离介于0.238 5~0.4801 cM之间,平均值为0.397 6 cM.(3)利用由非加权类平均法聚类分析表明,在遗传相似系数0.63处将12份材料被划分为五类:两类为晚熟(其中从国际马铃薯中心引进的青薯9号品种为一类;青薯168,2号,3号,4号品种为另一类),两类为早熟(其中青薯5号品种为一类;青薯8号品种和02-1-1品系为另一类),一类为中熟(因育成的地域不同而分为两个亚类).结果表明,青海省现有主要栽培的马铃薯品种遗传多样性水平较低.为拓宽育成品种的遗传基础,应充分发掘野生二倍体的遗传潜力. 相似文献
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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。 相似文献
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DENG Zhao-jing 《保鲜与加工》2005,(1):153-156
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. 相似文献
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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。 相似文献
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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。 相似文献
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Efficiency of water use of early plantings of sunflower 总被引:4,自引:0,他引:4
M. Auxiliadora Soriano Francisco Orgaz Francisco J. Villalobos Elías Fereres 《European Journal of Agronomy》2004,21(4):465-476
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. 相似文献
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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. 相似文献
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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. 相似文献