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Identification of candidate genes for key fibre-related QTLs and derivation of favourable alleles in Gossypium hirsutum recombinant inbred lines with G. barbadense introgressions
海岛棉 基因组组分 遗传作图群体
2024/5/17
该研究以渗入了海岛棉基因组组分的优质种质鲁原343为亲本，构建了包含239个重组自交系的遗传作图群体，利用SLAF标签构建了高密度遗传图谱，结合7个环境的表型数据，共鉴定104个纤维品质和产量性状QTLs，其中66个QTL共定位于19个QTL簇中。该研究团队通过进一步对鲁原343进行全基因组深度测序，解析鲁原343的遗传组成及其对纤维相关性状的遗传贡献，发现来自G. hirsutum races（...
High-resolution temporal dynamic transcriptome landscape reveals a GhCAL-mediated flowering regulatory pathway in cotton (Gossypium hirsutum L.)
棉花开花 相关基因 GhCAL
2024/5/17
本研究利用不同熟性的棉花高分辨率时间动态转录组，鉴定到棉花开花相关基因GhCAL，并对其介导的棉花开花调节途径进行了解析。研究发现GhCAL基因沉默的转基因棉花植株花芽分化和开花时间显著延迟，GhCAL能够与GhAP1-A04/GhAGL6-D09形成异源二聚体，同时调节GhAP1-A04和GhAGL6-D09的表达。GhAP1-A04和GhAGL6-D09沉默的棉花植株也表现出明显的开花延迟。因...
GhLUX1 and GhELF3 Are Two Components of the Circadian Clock That Regulate Flowering Time of Gossypium hirsutum
陆地棉 开花时间 调控机制
2024/4/16
植物从营养生长向生殖生长转变的时机受到多个复杂环境因素和内在因素的调控，只有适时的花芽起始和开花，植物才能在适宜的环境中完成生殖生长，从而成功的繁殖后代。季节性的光周期变化作为最可靠的外界信号，是植物判断外界环境条件是否适合生殖生长的重要依据。植物通过生物钟感知日长变化，调节自身生理活动与昼夜变化相协调，然而生物钟在光周期调控陆地棉开花时间中的作用尚是完全空白。本研究通过同源比对，在陆地棉中鉴定到...
GhGPAT12/25 Are Essential for the Formation of Anther Cuticle and Pollen Exine in Cotton (Gossypium hirsutum L.)
GhGPAT12 GhGPAT25 陆地棉 旁系同源基因
2024/4/16
GhGPAT12和GhGPAT25为一对位于陆地棉A12/D12染色体上编码甘油-3-磷酸酰基转移酶（GPAT）的旁系同源基因。GhGPAT12/25在发育早期的花药中特异表达，其转录本主要富集于绒毡层和花粉外壁。真核表达实验表明GhGPAT12/25具有sn-2酰基转移酶活性。CRISPR/Cas9介导的基因敲除实验发现GhGPAT12和GhGPAT25存在功能冗余，两基因的同时敲除导致彻底的雄...
Genetic Effects of High Fibre Strength Breeding Lines in Crosses with Transgenic Bt Cotton Cultivars (Gossypium hirsutum L.)
additive dominant model fibre quality heterosis lint yield
2016/4/5
Evaluation of genetic effects in cotton (Gossypium hirsutum L.) high fibre strength lines is necessary for the
genetic improvement of fibre properties. Six breeding lines with high fibre strength an...
Inheritance of resistance to Cotton leaf curl virus in cotton (Gossypium hirsutum L.)
Cotton leaf curl virus Gossypium hirsutum heritability of resistance generation mean analysis
2015/3/1
Resistance to Cotton leaf curl virus (CLCuV) in three cultivars of cotton was investigated in crosses with a susceptible cultivar using generation mean analysis. No single gene of major effect control...
Evaluating host plant resistance in cotton (Gossypium hirsutum L.) with varying gland densities to tobacco budworm (Heliothis virescens F.) and bollworm (Helicoverpa zea Boddie) in the field and laboratory
Cotton Gossypol Helicoverpa Heliothis Terpenoid Aldehydes
2013/2/27
Cotton (Gossypium hirsutum L.) produces a number of toxic terpenoid aldehyde (TA) compounds contained in epidermal glands that help protect the plant from pests and diseases. In the seed, one of these...
于2008～2009年在长江流域下游棉区，选用纤维比强度差异明显的德夏棉1号（平均比强度26.2 cN/tex）、科棉1号（平均比强度35 cN/tex）和美棉33B（平均比强度32 cN/tex）为试验材料，设置不同施氮量以形成不同的棉铃对位叶氮浓度，研究了棉铃对位叶氮浓度对纤维发育过程中关键酶（蔗糖酶、蔗糖合成酶、磷酸蔗糖合成酶、β-1, 3-葡聚糖酶）活性及纤维比强度形成的影响。结果表明，棉...
为兼顾试验的重复性和生态区域性，选用高品质棉（科棉1号）和常规棉（美棉33B）品种为材料，于2005年分别在江苏南京（118o50′E, 32o02′N，长江流域下游棉区）和江苏徐州（117°11′E, 34°15′N，黄河流域黄淮棉区）设置施氮量（低氮：N 0 kg/hm2；适氮：N 240 kg/hm2；高氮：N 480 kg/hm2）试验，研究施氮量对不同开花期棉铃纤维细度、成熟度和马克隆值...
以棉纤维比强度高的科棉1号、比强度中等的美棉33B 2个品种为材料，于2006－2007年在江苏南京设置大田分期播种试验，使棉铃发育处于不同温度条件，于棉株7~9果枝第1、2果节棉铃开花时喷施6-苄基腺嘌呤（6BA）和脱落酸（ABA），研究不同的铃期日均最低气温条件下6-BA和ABA对棉花产量和纤维品质的影响。结果表明：由晚播造成的低温降低了棉花产量及纤维品质。外施6-BA、ABA对棉株中部果枝铃...
Occurrence and distribution of soil nematodes in cotton (Gossypium hirsutum L.) production areas of Kenya
Cotton soil nematodes survey
2011/1/12
A baseline survey was conducted to determine the occurrence and distribution of soil nematodes associated with cotton in major growing areas in Kenya. Such baseline data on soil nematode abundance, di...
Optimization of in vitro direct regeneration of multiple shoots in upland cotton (Gossypium hirsutum L.) cv. Iranian varieties
Regeneration benzylaminopurine kinetin zeatin cotton
2011/1/11
A direct shoot regeneration protocol was optimized for upland cotton (Gossypium hirsutum L.). Three cultivars of cotton namely Bakhtegan, Zeta-2 and their hybrid (Bakhtegan×Zeta-2) were used to study ...
RESPONSE OF COTTON (GOSSYPIUM HIRSUTUM L.) TO VARIOUS LEVELS AND TIMES OF POTASH APPLICATION IN SEMI-ARID REGION OF PUNJAB
Gossypium hirsutum potash fertilizers split dressings yields
2010/9/27
A study was conducted in three successive seasons during 2004-06 on loam soil at three different sites in tehsil Faisalabad. The objective was to investigate the response of cotton (cv. NIAB-111) to d...
Stability and adaptability of commercial cotton cultivars (Gossypium hirsutum L. race latifolium H.) in Mozambique
confidence index cottonseed productivity genotype x environment interaction
2011/1/10
Cotton, which is also known as ‘white gold’, is an important crop in many developing countries. The crop yield is dependent on the environment in which it is grown. One of the major challenges for cul...