共查询到17条相似文献，搜索用时 515 毫秒
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综述了不同分子标记技术在黄瓜重要病害（白粉病、霜霉病、枯萎病、黑星病、炭疽病、病毒病）、果实品质（苦味、果瘤、果色、果实光泽及果实形状）、生殖发育（性别分化和单性结实）及营养生长（叶色、植株高度及侧枝）等重要性状中的研究进展,旨在为今后黄瓜育种提供理论依据和基础。最后,讨论了目前黄瓜分子标记技术在黄瓜育种研究中相对薄弱的原因,并对今后黄瓜育种前景进行了展望。 相似文献
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黄瓜种质资源果实性状的主成分分析与综合评价 总被引：2，自引：0，他引：2
探究黄瓜果实性状间的相关性及主次关系,对黄瓜品种进行综合评价,以期为筛选优良亲本提供参考依据。以49份黄瓜种质资源为材料,对其12个果实性状进行变异分析、相关性分析、主成分分析以及综合评价。结果表明,黄瓜的各果实性状间存在着丰富的变异,变异系数8.98%~38.41%,其中瓜把长的变异系数最大,果实心室数的变异系数最小。相关性分析结果表明,各果实性状间均存在着显著或极显著的相关性。在主成分分析中,提取前4个主成分因子,累积贡献率达到了82.609%。其中第1主成分包含果形指数、果实纵径、果实形状的果实纵径因子,第2主成分包含单果重、果实横径、单株产量的产量因子,第3主成分为果刺颜色因子,第4主成分为果实心室数因子。因此,在黄瓜品种改良过程中,应着重关注第1主成分和第2主成分的选择,其次是第3主成分,第4主成分可不必作为重要选择性状。 相似文献
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重点对黄瓜果实弯曲性研究进展进行综述,对黄瓜果实弯曲研究的重要性及目前研究中存在的问题进行总结,并提出今后的主要研究方向。黄瓜的果形是非常重要的外观品质之一。目前,国内外学者对黄瓜果实弯曲性的相关研究多集中在果实弯曲性的鉴定、造成弯曲的外界环境因素、子房与果实弯曲的发生和恢复、果实形态可视化系统的建立以及防治方法等几个方面。而对黄瓜果实弯曲性的系统研究不多．对于造成黄瓜果实弯曲的遗传规律和分子机理更少有深入细致的研究。因此．有必要在现有研究基础之上,利用现代分子生物学理论与技术,探明黄瓜果实弯曲性内在遗传机制,从细胞和分子水平揭示黄瓜果实弯曲的形成机理。 相似文献
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1.特征特性①MK160黄瓜。该品种是荷兰德奥特种业集团推出的。植株长势中等,膨瓜速度快,产量高。果实长度15～17厘米,表面光滑无刺,瓜条颜色好。抗黄瓜花叶病毒病、黄 相似文献
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《分子植物育种》2016,(6)
本研究以黄瓜纯系S94(华北类型)和S06(欧洲类型)为亲本,通过单粒传法获得包含224个株系的F6:7代重组自交系(RIL)群体。结合分子遗传加密图谱的构建及不同季节(F7/秋,F7/春两季)黄瓜重要果实性状表型调查数据,采用Win QTLcart 2.5软件复合区间作图法,对9个黄瓜果实相关性状(瓜长,瓜重,瓜把长,瓜横径,果柄长,果肉厚度,心腔直径,及长把比和长径比)QTL位点进行检测;同时,对果实质量性状无光泽果皮(D)、一致果皮颜色(u)和小刺基因(ss)进行了定位。结果显示:(1)构建包含7个连锁群,610个标记的遗传图谱,覆盖基因组749.2 c M,平均标记间距为1.2 cM;(2)果实相关的9个性状在F7/秋与F7/春两季共检测73个QTLs位点(F7/秋52个,F7/春49个),分布于全部7条染色体上,其中在果实相关性状中,仅瓜重fw4.1在春秋两季稳定检测到且贡献率较高,春季14.7%和秋季21.7%,其余位点高的贡献率(10%)都在单一季节表现;(3)黄瓜果实无光泽果皮(D)、一致果皮颜色(u)和小刺基因(ss)定位于第5染色体。 相似文献
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番茄种子播种后常因果实发育不良、着色不匀、病害严重发生、失去商品价值等引起种子质量纠纷.对此必须进行科学分析,才能做出正确判定.1六种果实(1)畸形果:果实表现为桃形、指形、歪扭、凹顶、尖顶、瘤状突起、大果脐、穿孔果、种子外露等畸形.…… 相似文献
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黄瓜新引品种资源适应性的比较 总被引：2，自引：0，他引：2
通过对58份黄瓜品种资源的引种试验研究,初步筛选出8份抗病品种,13份耐低温品种,5份高产品种.综合性状表现较好的品种为荷兰型黄瓜,前期单产在2 015.97～2 825.53kg/667m2,对黄瓜霜霉病表现为抗病,果实性状:瓜皮绿色,光滑无刺,短棒状,整齐度好,商品率高. 相似文献
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《Horticultural Plant Journal》2015,(1)
Tubercles and spines on fruit peel are important commercial traits in cucumber(Cucumis sativus L.). From an ethyl methane sulfonate cucumber mutant library,we discovered a new glabrous mutant that bears no tubercle or spine on fruit peel and fewer and smaller trichomes on the stem and leaves. The new locus is here designated as glabrous2(gl2). Genome sequencing of the mutant and linkage analysis revealed that a non-synonymous mutation in the Csa1G056960 gene rendered the gl2 phenotype. The mutated gene encodes a C-type lectin receptor-like tyrosine protein kinase. This study provides a novel allele for elucidating the genetic basis of wart and trichome development and a new tool for breeding glabrous cucumber varieties. 相似文献
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Zhang Weiwei Chen Yue Zhou Peng Bao Wenmin Yang Xuqin Xu Taibai She Weiwei Xu Liqin Yu Pinggao Pan Junsong 《Euphytica》2018,214(11):213
Fruit spine size is one of the importantly external quality traits effected the economic value of cucumber fruit. Morphological–cytological observation of the fruit spine size phenotype indicated that large spine formation arises from an increasing of spiny pedestal cell number caused by cell division, and best periods to accurately score fruit spine size trait was 4th day before flowering to 7th day after flowering according the continuous observation. Genetic analysis showed that a single dominant gene determined the fruit spine size trait in cucumber. BC1 population (189 individuals) of two inbred lines (large spine PI197088 and small spine SA0422) was used for primary mapping of the SS/ss locus with 7 markers covering an interval of 37.1 cM. An F2 segregating population of 1032 individuals constructed from the same two parents (PI197088 and SA0422) was used to fine mapping of the SS/ss locus. Six new markers linked to the gene were successfully screened for construction of a fine linkage map, in which the SS/ss locus was located in the region flanked by marker SE1 (3 recombinants) and SSR43 (2 recombinants) with a 189 kb physical distance. Markers from this study will be valuable for candidate gene cloning and marker-assisted selection for cucumber breeding. 相似文献
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Song Zhang Han Miao Zichao Song Panna Liu Ye Wang Todd C. Wehner Xingfang Gu Shengping Zhang 《Plant Breeding》2017,136(5):767-774
Firmness of skin is an important quality of processing cucumbers, which is a feature of the palisade epidermis in these types compared to flat epidermis in fresh cucumbers. This study was conducted to map the Pe (palisade epidermis) and analyse the candidate gene. Populations derived from the cross of two inbred lines, NCG122 with fruit flat epidermis and NCG121 with fruit palisade epidermis, were used to identify the inheritance of palisade epidermis and to map the gene involved in its development. The results showed that the palisade epidermis trait is controlled by a single gene, Pe, that is dominant over flat epidermis. Seven simple sequence repeat (SSR) and five insertion deletion (Indel) markers were identified to be linked to the Pe gene. It was mapped to cucumber chromosome 5 (Chr.5) between SSR14611 and Indelpe12 with genetic distances of 0.3 cM and 0.2 cM, respectively. The physical distance of the genomic region harbouring the gene was 227.5 kb with 26 predicted candidate genes. The accuracy of marker‐assisted selection using the molecular markers, Indelpe12 and SSR14611, was 68% and 88%, respectively. 相似文献
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Summary The inheritance of cucumber fruit neck size and its linkage relationships with the fruit length and 10 other characteristics was investigated. Frequency distributions and the means of generations indicate intermediate inheritance for neck size and fruit lenght. Correlation and regression analysis suggest strong linkage between fruit neck size and fruit length. Chi square analysis of the F2 and BC generations indicate independent assortment of the fruit neck size and the following characters: bitterness, female sex expression, spine color, spine size, warted fruit, uniform color of immature fruit, mature fruit color, dull fruit skin, epidermal structure, and powdery mildew resistance. 相似文献
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In cucumber, the genetic basis of traits under domestication and/or diversifying selection is not well understood. Here, we reported QTL mapping for flowering time and fruit size-related traits with segregating populations derived from a cultivated × wild cross. Phenotypic data of flowering time (FT), fruit size (FS), fruit number (FN) and fruit weight per plant (FW) were collected in multiple environments. QTL analysis identified 19 QTL for these traits. We found that the major-effect QTL FT1.1 played an important role in regulating flowering time in cultivated cucumber, whereas the minor-effect QTL FT6.3 contributed to photoperiod sensitive flowering time during domestication. Two novel consensus FS QTL, FS1.4 and FS2.3, seem to be the targets of selection during breeding for the US processing cucumber. All other FS QTL were co-localized with previously detected QTL using populations derived from cultivated cucumbers, suggesting that they were under selection during both initial domestication and subsequent improvement. Results from this study also suggested that the wild cucumber is a useful resource for capturing positive transgressive segregation and novel alleles that could be explored in cucumber breeding. 相似文献