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1.
为了加快淀粉型甘薯新品种‘苏薯24号’的推广应用,总结淀粉型甘薯品种选育的实践经验与心得,通过2012—2014年国家区试多年多点品比试验,以及抗病性等特性综合鉴定评价。结果表明:‘苏薯24号’在2012—2013年国家甘薯长江流域薯区区域试验中,平均鲜薯产量33534.0 kg/hm2,平均薯干产量11130.0 kg/hm2,淀粉产量7549.5 kg/hm2,比对照‘徐薯22’增产18.27%,增产显著;平均块根干物率和淀粉率为33.08%和22.41%,分别比对照‘徐薯22’高2.84和2.47个百分点。2014年国家长江区试生产试验中,平均鲜薯产量31204.5 kg/hm2,平均薯干产量10194.0 kg/hm2;平均淀粉产量6883.5 kg/hm2,比对照‘徐薯22’增产23.28%。该品种2015年2月通过国家甘薯新品种鉴定。‘苏薯24号’聚合了双亲高产、高淀粉、丰产稳产、综合性状优良等特点,薯干和淀粉产量均较高,抗病和耐储藏性好,在长江流域薯区及周边地区具有广阔的推广应用前景。最后,笔者提出了高淀粉甘薯品种的选育策略是培育骨干亲本与创建核心种质,组配优势群体且加大选择压力,加速育种进程。  相似文献   

2.
2009年我站从江苏徐州甘薯研究中心引进甘薯新品种——徐薯27(原名徐25—2),在我市张庄镇王庄村进行了栽培试验,平均亩产达到4250千克,比对照徐薯18增产24.53%。3年的栽培实践表明,该品种产量、综合抗病性以及薯形均优于目前的甘薯当家品种——徐薯18。  相似文献   

3.
为满足甘薯生产和市场对食用型甘薯品种的需要,南充市农业科学院以徐薯23为母本与多父本进行集团杂交,从后代实生种子中筛选培育出了食用型甘薯新品种南薯 026,于 2021 年 10 月完成品种登记(登记号:GPD 甘薯(2021)510050)。南薯 026 每 hm2 鲜薯产量达到 33099.75kg,薯块干率 26.10%,淀粉率 15.60%,还原糖含量 1.10%,可溶性糖含量 2.69%,粗蛋白含量 0.671%,鲜薯胡萝卜素含量 0.114mg/100g,鲜薯维生素 C 含量 24.20mg/100g。南薯 026 结薯集中,薯型不规则、皮红色、肉黄色、商品性好、耐贮藏,抗病性中等,是优良的食用型甘薯新品种。  相似文献   

4.
胡启国 《中国种业》2017,(10):78-79
商徐紫薯1号是以渝紫薯7号为母本放任授粉,从其后代中选育而成的甘薯新品种。2014-2015年国家甘薯新品种区域试验中,每hm~2平均鲜薯产量30592.5kg,较对照宁紫1号增产11.72%,达极显著水平,居参试品种第4位;平均薯干产量9822kg,较对照增产25.25%,达极显著水平,居参试品种第1位;平均烘干率32.11%,比对照高6.1个百分点。该品种商品性、稳产性、萌芽性、耐贮性、抗病性、品质、食味均较好。  相似文献   

5.
南薯 027 系南充市农业科学院于 2015 年以优质品种浙薯 13 作母本通过集团杂交获得种子,2016-2021 年进行鉴定、比较,成功选育的一个食用型甘薯新品种,2022年6月通过国家甘薯品种登记。2019-2020年在四川省甘薯新品系联合试验中,鲜薯平均产量 27425.70kg/hm2,薯干平均产量 8830.65kg/hm2,淀粉平均产量 5929.05g/hm2;薯块干率 32.27%,淀粉率 21.69%,大中薯率 88.94%,薯形美观,薯块商品性好,黑斑病抗性和贮藏性优于对照品种,适于食用及食品加工用,适宜在四川薯区中等肥力以上田块种植。  相似文献   

6.
为了确定甘薯新品种渝苏1号的品质,对其块根的营养成分进行了分析测定,并与优良品种徐薯18、农大红比较,结果表明:渝苏1号在蛋白质、还原糖、可溶性糖、淀粉、钙、胡萝卜素、维生素C等方面的含量均较高,尤其是淀粉、胡萝卜素、钙显著高于其他两个品种。在氨基酸含量中,渝苏1号除半胱氨酸和组氨酸与徐薯18相等,天门冬氨酸比农大红低外,其他各种氨基酸含量均高于徐薯18和农大红。所以,渝苏1号是一优质甘薯新品种。  相似文献   

7.
苏渝 30 3(渝苏 30 3)系江苏省农科院粮作所与重庆市甘薯研究中心合作于 1991年从宁 B5 8- 5×苏薯 1号的杂交组合后代中选育而成的优良淀粉加工及饲用甘薯新品种。 1997年以来分别通过了四川省、重庆市、江苏省和江西省的农作物品种审定。主要特征特性 顶叶绿边缘带褐色 ,叶片心脏形 ,叶柄绿带紫色 ,蔓绿带紫色 ,长蔓型 ;单株分枝数7~ 8个 ,单株结薯数 3~ 4个 ,薯型下膨纺锤形 ,薯皮红色 ,薯肉淡黄色 ,结薯整齐 ,商品薯率高。育苗试验表明 ,该品种萌芽性好 ,出苗量较多 ,薯苗粗壮 ,百株苗重为 831g,比徐薯 18高 10 .1% ;栽后发根还苗快…  相似文献   

8.
旨在探讨、验证优质食用型紫肉甘薯新品种创制的最佳策略,为甘薯高效育种提供借鉴。以来自日本的优质紫肉型甘薯‘川山紫’为母本,以高产、高糖材料‘冀薯6-8’为父本,通过有性杂交、系统选育获得优质食用型紫肉甘薯新品种‘榕紫薯5号’。该品种2011—2013进行多点选拔、品比及鉴定,2014—2015年参加福建省甘薯区试。对‘榕紫薯5号’的形态特征、农艺性状、品质性状、抗病性、生产力、适应性进行了试验研究。结果表明‘,榕紫薯5号’为中晚熟品种,生育期135天,萌芽性好,分枝能力中等,全生育期群体长势强劲,结薯集中。2014—2015年福建省甘薯区域试验平均鲜薯产量30.24 t/hm2,平均干物率30.12%,平均出粉率19.84%,食味评分81.6分,比对照高1.6分。外观评分81.3分,比对照高1.3分。花青素含量26.95 mg/100 g FW。大中薯率68.7%。省区试综合鉴定结果为:株型中蔓半直立;鲜薯产量、薯干产量和淀粉产量比对照高;干物率和淀粉率与对照相当;食味品质、外观品质均优于对照;抗蔓割病,中抗薯瘟病,耐贮性好,该品种达到食用型甘薯品种审定标准,可作为鲜食及特用薯在中国南方薯区广地域种植。  相似文献   

9.
为满足甘薯生产和市场对桔红色食用型甘薯品种的需要,南充市农业科学院以浙薯 13 为母本与多父本进行集团杂交,从后代实生种子中筛选培育出了甘薯新品种南薯 021,于 2021 年 7 月完成国家非主要农作物品种登记,登记号:GPD 甘薯(2021)510040。该品种鲜薯产量达到 29448.3kg/hm2,薯块干率 27.47%,淀粉率 17.54%,β- 胡萝卜素含量 1.46mg/100g ;薯块呈纺锤形,结薯集中,薯皮中等红色,薯肉桔红色,大中薯率达 85.17% ;薯形好、食味优、商品性好、抗病性强、耐贮藏,是理想的桔红色食用型甘薯新品种。  相似文献   

10.
食用甘薯品种选育及系谱分析   总被引:1,自引:1,他引:0  
为了探索食用甘薯品种的选育方法,加快优良食用甘薯品种的选育进程。本研究对2001—2020年育成的22个食用型甘薯品种主要性状和亲本系谱进行了分析。结果表明:22个食用甘薯品种的平均鲜薯产量32689.0 kg/hm2,平均干物率28.1%。其中12个苏薯系列红心食用甘薯品种的平均胡萝卜素含量4.77 mg/100g鲜薯,10个宁紫薯系列紫心食用甘薯品种的平均花青素含量24.49 mg/100g鲜薯。系谱分析表明:苏薯系列红心食用甘薯品种基因源主要来自于美国品种,其中大多数品种都具有‘南瑞苕’血统,宁紫薯系列紫心甘薯品种基因源主要来自于日本品种,同时种质创新和桥梁亲本的应用也对紫心甘薯品种选育起到重要作用。外引资源和创新种质都是食用甘薯育种不可或缺的亲本来源,定向配组杂交是选育优良食用甘薯品种的主要方法。  相似文献   

11.
Autotoxicity restricts reseeding of alfalfa (Medicago sativa L.) after alfalfa until autotoxic chemical(s) breaks down or is dispersed into external environments. A series of aqueous extracts from leaves, stems, roots and seeds of alfalfa ‘Vernal’ were bioassayed against alfalfa seedlings of the same cultivar to determine their autotoxicity. The highest inhibition was found in the extracts from the leaves. Extracts at 40 g dry tissue l?1 from alfalfa leaves were 15.4, 17.5 and 28.7 times more toxic to alfalfa root growth than were those from roots, stems and seeds, respectively. A high‐performance liquid chromatography (HPLC) analysis with nine standard compounds showed that the concentrations and compositions of allelopathic compounds depended on the plant parts. In leaf extracts that showed the most inhibitory effect on root growth, the highest amounts of allelochemicals were detected. Among nine phenolic compounds assayed for their phytotoxicity on root growth of alfalfa, coumarin, trans‐cinnamic acid and o‐coumaric acid at 10?3 m were most inhibitory. The type and amount of causative allelochemicals found in alfalfa plant parts were highly correlated with the results of the bioassay, indicating that the autotoxic effects of alfalfa plant parts significantly differed.  相似文献   

12.
Jens Jensen 《Euphytica》1979,28(1):47-56
Summary The high-lysine gene in Risø mutant 1508 conditions an increased lysine content in the endosperm via a changed protein composition, a decreased seed size, and several other characters of the seed. The designation lys3a, lys3b, and lys3c, is proposed for the allelic high-lysine genes in three Risø mutants, nos 1508, 18, and 19. Linkage studies with translocations locate the lys3 locus in the centromere region of chromosome 7. A linkage study involving the loci lys3 and ddt (resistance to DDT) together with the marker loci fs (fragile stem), s (short rachilla hairs), and r (smooth awn) show that the order of the five loci on chromosome 7 from the long to the short chromosome arm is r, s, fs, lys3, ddt. The distance from locus r to locus ddt is about 100 centimorgans.  相似文献   

13.
Development of onion (Allium cepa L., cv. ‘Early Cream Gold’) seed under cool climate conditions in Tasmania, Australia occurred over a longer duration than previously reported, but similar patterns of change in yield components were recorded. In contrast to previous studies, umbel moisture content declined from 85 to 67 % over 57 days while seed moisture content decreased from 85 to 31 %. Seed yield continued to increase over the duration of crop development, with increasing seed weight compensating for seed loss resulting from capsule dehiscence in the later stages of maturation. Germination percentage was high and did not vary significantly from 53 to 77 days after full bloom (DAF), but mean germination time declined and uniformity of germination increased significantly over the same time period. The percentage abnormal seedlings declined with later harvest date, resulting in highest seed quality at 77 DAF. The results of this study suggest that the decision to harvest cool climate onion seed crops before capsule dehiscence will result in a loss of potential seed yield and quality.  相似文献   

14.
Summary Avoidance of rust fungi that was based on poor appressorium induction was previously found in Hordeum chilense. In the present study 95 accessions of Triticeae were screened for avoidance of Puccinia hordei. The percentage of appressorium formation per germinated spore ranged from 6 to 90%. On none of the 41 accessions of Aegilops, Agropyron, Elymus, Secale, Thinopyrum or Triticum studied was the rate of appressorium formation lower than 25%. Lower rates of appressorium formation were, however, found on accessions of wild barley species Hordeum brachyantherum, H. marinum, H. parodii and H. secalinum. Its implications in cereal breeding are discussed.  相似文献   

15.
[Objectives]This study aimed to establish a QAMS(quantitative analysis of multi-components by single-marker)method for simultaneous determination of four phenol...  相似文献   

16.
G. H. Kroon 《Euphytica》1994,76(1-2):125-125
Summary K x vadensis is a hybrid of K. blossfeldiana and K. marmorata obtained after doubling the number of chromosomes.  相似文献   

17.
Progress is being made, mainly by ICARDA but also elsewhere, in breeding for resistance to Botrytis, AScochyta, Uromyces, and Orobanche; and some lines have resistance to more than one pathogen. The strategy is to extend multiple resistance but also to seek new and durable forms of resistance. Internationally coordinated programs are needed to maintain the momentum of this work.Tolerance of abiotic stresses leads to types suited to dry or cold environments rather than broad adaptability, but in this cross-pollinated species, the more hybrid vigor expressed by a cultivar, the more it is likely to tolerate various stresses.  相似文献   

18.
[Objectives]To optimize the water extraction process of Chinese Herbal Compound Man Gan Ning and establish a method for its extraction and content determination...  相似文献   

19.
E. Keep 《Euphytica》1986,35(3):843-855
Summary Cytoplasmic male sterility (cms) is described in the F1 hybrids Ribes × carrierei (R. glutinosum albidum × R. nigrum) and R. sanguineum × R. nigrum. In backcrosses to R. nigrum, progenies with R. glutinosum cytoplasm were either all male sterile, or segregated for full male fertility (F) and complete (S) and partial (I) male sterility. Ratios of F:I+S suggested that two linked genes controlled cms, F plants being dominant for one (Rf 1) and recessive for the other (Rf 2).Segregation for cms in relation to three linded genes, Ce (resistance to the gall mite, Cecidophyopsis ribes), Sph 3(resistance to American gooseberry mildew, Sphaerotheca mors-uvae) and Lf 1(one of two dominant additive genes controlling early season leafing out) indicated that Rf 1and Rf 2were in this linkage group. The gene order and approximate crossover values appeared to be: % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXafv3ySLgzGmvETj2BSbqef0uAJj3BZ9Mz0bYu% H52CGmvzYLMzaerbd9wDYLwzYbItLDharqqr1ngBPrgifHhDYfgasa% acOqpw0xe9v8qqaqFD0xXdHaVhbbf9v8qqaqFr0xc9pk0xbba9q8Wq% Ffea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qqQ8frFve9Fve9Ff0dme% aabaqaciGacaGaamqadaabaeaafaaakeaacaWGdbGaamyzamaamaaa% baGaaiiiaiaacccacaGGWaGaaiOlaiaacgdacaGG0aGaaiiiaiaacc% caaaGaaiiiaiaacccacaGGGaGaamOuaiaadAgaliaaigdakmaamaaa% baGaaiiiaiaacccacaGGGaGaaiiiaiaaccdacaGGUaGaaiOmaiaacs% dacaGGGaGaaiiiaiaacccacaGGGaGaaiiiaaaacaWGsbGaamOzaSGa% aGOmaOWaaWaaaeaacaGGGaGaaiiiaiaacccacaGGGaGaaiiiaiaacc% cacaGGGaGaaiiiaiaacccaaaGaamitaiaadAgaliaaigdakmaamaaa% baGaaiiiaiaacccacaGGGaGaaiiiaiaacccacaGGGaGaaiiiaiaacc% cacaGGGaGaaiiiaiaacccacaGGGaaaaiaadofacaWGWbGaamiAaSGa% aG4maaaa!6E4D!\[Ce\underline { 0.14 } Rf1\underline { 0.24 } Rf2\underline { } Lf1\underline { } Sph3\]. Crossover values of 0.36 for Ce-Lf 1, and 0.15 for Lf 1-Sph 3were estimated from the relative mean differences in season of leafing out between seedlings dominant and recessive for Ce and Sph 3.It is suggested that competitive disadvantage of lf 1-carrying gametes and/or zygotes at low temperatures may be implicated in the almost invariable deficit of plants dominant for the closely linked mildew resistance allele Sph 3. Poor performance of lf 1- (and possibly lf 2-) carrying gametes and young zygotes during periods of low temperature at flowering might also account for the liability of some late season cultivars and selections to premature fruit drop (running off).  相似文献   

20.
[Objectives] To determine the optimum extraction technology for total phenols of leaves in Acanthopanax giraldii Harms.[Methods]The single factor test and ortho...  相似文献   

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